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I&T Ford Shop Service Manual - Series 2N 8N 9N

1. 81 REVERSE IDLER GEAR May be removed after countershaft is out Pull idler shaft out toward rear and lift out gears Rebush gears or renew parts if necessary and reinstall assembling as shown in Fig F036 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 The PTO shi fter uni t Fig F062 Countershaft gears and components on model 8N Is connected to the splined end of this shaft Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 FARMFOO COM Fig F063 Reverse idler gear assembly model 8N Some transmissions are provided with an additional washer part No 7029 between A and B Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 DIFFERENTIAL BEVEL GEARS amp REAR AXLE DIFFERENTIAL The differential is mounted in after section of rear axle center housing and may be removed without disturbing transmission or power lift units by removing the left hand axle housing as shown in Fig F064 84 REMOVAL Drain housing and block up under center center axle housing to raise rear wheels Remove left rear wheel Unbolt left axle housing assembly from center housing and pull assembly off tractor with axle shaft as a unit supporting it with a lift or wheeled jack
2. O U O O LL co i ar ie gt w Ne Fig F037 Bendine governor TEF to obtain correct fork position on models X kega 2N 8N 9N Fig F036 Using gauge to check governor lever on models 2N 8N 9N LEVER ASSEMBLY 18190 SPRING 18196 ELBOW FITTING 18686 LEVER 18189 DUST SEAL 18183 NEEDLE BEARING 18182 Fig F038 Removing and ne Ha Soon ea gas installing shaft bushing on tee models 2N 8N 9N er EN gt fs ot FARMFOO COM E PIN 18224 FARMFOO COM F pa Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 COOLING SYSTEM REMOVE WATER PUMP 46 To remove pump drain cooling system and remove fan belt Remove four cap screws holding fan and move fan assembly toward radiator core to clear the pump Disconnect lower radiator hose Remove cap screws and stud nuts and remove pump assembly from engine Models 2N 9N 47 To disassemble pump remove back cover plate and press fan pulley 5 Fig F039 off shaft and bearing assembly 4 using a suitable puller Remove bearing retainer snap ring from front of pump body and press shaft and bearing assembly forward and out of impeller and impeller pump body Remove snap ring from impeller then composition seal washer spring retainer and spring from impeller 1 Pump housing hub Renew worn or damaged parts including bushing 3 in pump body
3. FO 4 I amp T Remastered Ver 1 2 05 24 2015 Fig F095 Legend C Pump valve chamber 9 Valve guide socket CV Check valve spring of item 10 10 Relief safety valve GP Guide pin pump piston 11 Control valve RV Relief valve spring of item 19 12 Gasket 2 Valve clamp 15 Pump cam 3 Plug 16 Cam block 2 used 4 Outlet valve spring 17 Pump yoke piston 2 used 5 Outlet valve 18 PTO shaft bushing 6 Inlet valve spring 19 Pump base 7 Inlet valve 22 Drain plug 8 Valve guide 23 Gasket a rocker lever which in turn is operated by a single control lever Throughly wash all parts in an approved solvent being sure to remove all gum carbon or varnish from the surfaces Renew any corroded scratched or worn parts and check and service the valves and bushings in the pump as per paragraphs 125 through 129 125 PUMP VALVE This pump valve 11 Fig F095 which takes the place of the intake and exhaust control valves on the 8N tractors is available in only one diameter It should be a minimum clearance free fit in the bushing B Bushing B_ is available in oversizes of 010 and 020 on the outside diameter 126 SAFETY AND CHECK VALVE UNIT The check valve portion CV Fig F095 of this assembly is exactly the same as the check valve used in pumps for model 8N tractors If inspection shows that check valve has been leaking check for irregularities
4. DADOOVUDUUEOOOUOUO PIOODOO OOO UOIOOOUROO UAOO OUO PA OOOO O 0O00 HUD AHINNAN HA NANNUA ULE mi FORD SHOP MANUAL 3 SERIES 2N E eN 9N UUDAOUOLOOOUANOOOUUOUOUOOOOTOTOO OOOO OLOUN UTOTO OO ORNO OO NON MANUAL NO FO 4 a Price 2 00 I amp T Shop Service Ford Shop Manual Series 2N 8N 9N Manual NO FO 4 copyright 1953 EXPIRED This book free to print share distribute with anyone Remastered Version 1 2 FO 4 I amp T Remastered Ver 1 2 05 24 2015 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 PREFACE This book was transcribed reformatted to this PDF version by me John Chapman I d be delighted for you to connect with me at any or all of Email jcchapster gmail com Twitter http twitter com jcchapster Linked In https www linkedin com in jcchapster Facebook https www facebook com thejcchapster TRACTOR MANUAL ARCHIVE I m building a Tractor Manual Archive The Tractor Manual Archive is a repository of Tractor Manuals that are typically out of Copyright and are now in Public Domain Additionally manuals that have Copyright holder permission to be included will be archived as well Do you have an old manual It might be a manual others are looking for Contact the Tractor Manual Archive about how to share your manual with others and be a part of preserving useful history Do you have a PDF of an old manual Even if purchas
5. Fig FO 32 from governor body after removing base screw Remove spring clip and disassemble shaft and flyball parts Examine balls and renew if they have flat spots pits or are excessively worn Inner surface of cone shaped upper race should be smooth and even If grooved or pitted renew race Check condition of fork base and thrust bearing drive shaft bearing and driven gear Renew worn or damaged parts and reassemble unit 3 THROTTLE SPRING Maidi Fig F031 Showing a of asmeni on de SN governor linkage to correct an over speeding condition Clearance between washer and fork base should be from 220 to 230 and is adjusted by varying the number of shims 18241 until clearance is correct If available Governor Setting Gauge No ELO7691 shown in Fig FO 33 may be used to check adjustments To check clearance between washer and fork base clamp shaft and driver assembly in Gauge as shown and insert Go No Go gauge between washer and fork base If only thin end of gauge can be inserted clearance is satisfactory Insertion of gauge all the way on thick section indicates excessive clearance and thin shims should be added until clearance is correct Check governor lever shaft assembly and needle bearing Fig F034 for binding or Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 excessive looseness and renew parts where required If inner lever assembly is loose install new pa
6. On engines with free type exhaust valve rotators Fig F017 a gap or end clearance of 0002 to 004 must exist between cap and end of valve stem as shown One method of checking this gap with valve installed in engine is show in Fig F019 Valve must be off its seat when making this check If clearance is more than 0084 reduce the length of cap by lapping open end of same on emery cloth laid on a flat smooth surface If clearance is less than 002 install new valve keys or if keys are not work grind end of valve stem until specified clearance is obtained For additional data on various types of valve rotators refer to STANDARD UNITS manual Fig FO19 With valve on lift portion of cam the rotator cap gap can be measured as shown If gap is correct valve will have an up and down free play or travel of 0002 004 TIMING GEARS AND COVER 28 To remove timing gear cover drain cooling system and remove hood and radiator Block up under front end of engine behind axle support and remove bolts holding support in place Disconnect front end of drag link and mating radius rod on either side of tractor and swing front end assembly away from engine as shown in Fig F013 Remove distributor fan and generator on tractors prior to serial 263844 on later tractors generator removal is not te a o i a er Les necessary Remove hand crank jaw and Fig F020 Valve timing marks crankshaft belt pulley Remove gear cover cap s
7. The front end of the power take off shaft is supported in a ball bearing 715 Fig F075 mounted in support 718 located on the rear wall of the transmission housing Rear end of shaft is supported in a similar type bearing mounted in a retainer on the rear face of the center housing And adapter is available to increase shaft size to 1 3 8 inch to permit use of ASAE standard implement drive coupling The PTO shaft revolves at 545 rpm when the crankshaft is revolving at 1500 rpm Fig FO74 Power take off shaft assembly as used on models 9N and early production 2N models An adapter mounted aft of the shaft enables use of standard ASAE couplings 1 Shaft and sleeve 5 Sleeve 9 Bearing seal 2 Shaft cover cap 6 Bearing 10 Spring guide 3 Bearing retainer 7 Shaft cover 11 Seal ring 4 Spacer 8 Seal case washer 13 Seal case SHIFT RAIL STOP 7 GER 2 INTERLOCK BAU 353075 S m ow N LOCKWASHER A A sr EXTERNAL SHAFT SHIFT RAIL 719 INTERLOCK ne 95 To remove and U Bell overhaul PTO shaft first SLEEVE_ 717 remove four cap screws holding shaft bearing retainer to center axle housing and pull shaft and retainer assembly out of housing Disassemble by BEARING 715 BEARING CUP removing bearing lock BR REN TER ft ezine thes Ry er pEr ONTI rings or screw collars and Fig F075 Power take off shifter assembly which is renew worn
8. jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 ELECTRICAL AND IGNITION SYSTEM Test Specifications 9N10999C 8N10000 8N1000 B 8N10009A 8N10001 Maximum Output 11 5 6 52 11 5 6 52 20 0 7 0 Engine RPM Max Output 925 1500 1100 Field Resistance Ohms 1 5 70 F 4 0 70 F 3 2 70 F Renew Brushes if Shorter Than Inches 350 350 490 GENERATOR AND REGULATOR 50 A two brush 6 volt generator part 8N1000 B provided with an external vibrating type voltage regulator replaces the older 3 brush unit 9N10000C 2N10000 and two brush 8N10000A unit used prior to tractor serial 8N263 844 Generator used on 8N tractors after 263 843 is 8N10001 51 The cut out relay 8N10505B used with 3 brush generators should be adjusted to a closing EN eel St ae 2 ESTs y voltage of 7 0 8 5 i 1 K Opening voltage should be Fig F042 Starter switch mechanism used on models 1 2 to 1 1 2 volts less 2N 9N A basically similar hookup is used on 8N than the closing voltage or 6 amperes maximum reverse current at 6 volts minimum 52 The combined cut out relay and voltage regulator assemblies 8N10505 8N10505A and 8N10505B used on 2 brush mounted generators have a cut out unit and a voltage regulator on the same base The cut out relay unit of this assembly should be adjusted to the specifications listed in paragraph 51 The vibrating voltage regulating unit settings should be 6 9 7 4 volt
9. Carburetor Make Marvel Schebler Carburetor Model Carburetor Float Setting Inches Engine Low Idle RPM Engine High Idle RPM Belt Pulley RPM 2000 Engine RPM PTO RPM 1500 Engine RPM SIZES CAPACITIES CLEARANCES Clearances in Thousandths Crankshaft Journal Diameter Crankpin Diameter Camshaft Journal Diameter Piston Pin Diameter Connect Report Errors jcchapster gmail com 14 16C 45 45 Own 9N12100 8N12127 0 025 TC 4 B 25 B 17 B None 4 line None 17 line Para 54 58 Champion H10 yes Paragraph 42 9 32 400 2200 1358 545 2 248 2 249 2 094 1 797 7501 7504 FO 4 I amp T Remastered Ver 1 2 05 24 2015 Valve Stem Diameter One Piece Valve Guide Valve Stem Diameter Two Piece Valve Guide Cam Follower Push Rod Diameter Inches Compression Ring Width Inches Oil Ring Width Inches Main Bearings Running Clearance Rod Bearings Running Clearance Piston Skirt Clearance Steel Pistons Piston Skirt Clearance Aluminum Pistons Camshaft Bearing Clearance Cam Follower Pushrod Running Clearance Crankshaft End Play Cooling Systems Gallons Crankcase 0il Quarts Transmission Differential amp Hydraulic System Quarts Belt Pulley Housing Quarts Connect Report Errors jcchapster gmail com 341 342 3105 3115 9995 093 187 1 3 1 3 5 2 5 4 0 1 5 2 5 12 4 1 2 6 3 6 20 1 3 FO 4 I amp T Remastered Ver 1 2 05 24 2015 MODEL 8N Con
10. The bushing must be flat over its entire face area and square within 001 to provide a satisfactory sealing surface Bushing face may be resurfaced if not worn or grooved enough to require renewal Reassemble parts as shown and reinstall pump Fig F039 Water pump cross sectional view as used on models 2N 9N Seal assembly Bushing seal seat Bearing and shaft Pulley ory BR wm Model 8N 48 To disassemble pump remove lock ring 1 Fig F040 and rear cover plate and pull don t drive off pulley 2 Extract bearing snap ring 4 and press shaft and bearing 3 seal 6 and impeller 7 assembly out of pump Press impeller off shaft and remove seal 6 and slinger washer 5 Renew worn or damaged parts reassemble parts as shown with impeller Fig F041 Cooling system thermostat on models 2N 8N 9N Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 approximately 1 32 inch below surface of housing THERMOSTAT 49 A thermostat is located in the upper radiator hose Thermostat starts to open at approximately 160 degrees and is fully open at approximately 195 degrees Fahrenheit See Fig FO41 FARMFOO COM N Fig F040 Water pump cross section model 8N 1 Lock ring 5 Slinger 2 Pulley 6 Seal assembly 3 Bearing and shaft 7 Impeller 4 Snap ring Connect Report Errors
11. bolts and raise engine and radiator high enough to permit removal of axle center pin Remove pin using hand crank as show in Fig F04 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 STEERING SYSTEM The steering gear on models 2N 9N consists of two sector gears and integral arm units both meshed with a steering shaft and pinion assembly Gear units are mounted in a housing Fig FO5 which also serves as a transmission case cover The gear housing is constructed in two parts and also supports the instrument panel Fig FO6 The steering gear used on model 8N tractor is a Saginaw screw and recirculating ball nut type mounted on top of transmission housing ADJUSTMENT amp OVERHAUL Models 2N 9N 6 ADJUSTMENT The steering shaft bearing may be adjusted without removing gear unit from tractor To adjust steering shaft bearings remove steering wheel and shaft bearing dust cover 19 Fig F07 Remove locknut and lock washer 1 Adjust lower nut until end play is removed and shaft still turns freely Install lock washer and locknut and tighten nut Detach drag links from sector arms and check backlash at arms while steering wheel is held stationary If excessive sector gear backlash or end play exists it will be necessary to remove upper gear housing 11 to gain access to sectors for adjustment 6A To clear upper housing for removal it will be necessary to remove hood bat
12. clearance between rear of camshaft gear flange and boss on engine block through governor opening or after removing side gear cover as shown in Fig FO22 If more than 004 clearance exists use a thinner timing gear cover gasket or renew the cover Check valve tappet clearance and respace or readjust if necessary For service only the bolted on gear type camshaft is available lt lt chen as n f u Do mn Ci Fig F022 If camshaft end play exceeds 006 when Camshaft Journal Diameter 1 7985 1 799 checked as shown install a Bearing Clearance Recommended 001 002 thinner gear cover gasket or Renew Shaft and or Block a new cover if Clearance Exceeds 004 End Play Recommended 0015 004 ROD amp PISTON ASSEMBLIES Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 30 Piston and connecting rod assemblies may be removed from the top after cylinder head and oil pan are off FARMFOO COM Identify unmarked pistons and rods to correspond with cylinders in which they are installed reinstalling them in same relative position occupied before removal Install connecting rods with numbered sides toward camshaft and oil squirt holes to the front or rear On aluminum pistons assemble pistons to rods so that notch in piston head is toward timing gear end of engine Tighten connecting rod nuts to 35 4 foot pounds Fig F021 Cross section view
13. too deep and too shallow probable causes are main control spring not properly adjusted paragraph 100 and or binding linkage 112C IMPLEMENT CANNOT BE LOWERED TO FULL WORKING DEPTH Possible cause of Fig F089 Model 8N lift housing cover when viewed from lower side with ram cylinder removed H Constant draft control spring flat washer and lock nut J Cotter pin Q Quadrant retaining cap screws 41 Yoke for main control spring 42 Main control spring 54 Control lever shaft 68 Lock nut 70 Drawbar control arm FARMFOO COM 71 Pin Fig F090 Model 8N lift cover showing 77 Control rod second step in reassembly procedure 78 Draft control spring Y Lock plate 79 Bushing Z Lift shaft arm retaining cap screws 80 Draft control swivel 59 Lift shaft arms 84 Lift control lever 73 Draft control link Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 this condition is incorrect adjustment of quadrant Refer to paragraph 99 or 101 PUMP R amp R AND TEST Models 2N 8N 9N 114 TEST PUMP To check pump operating pressure when pump is installed proceed as follows Remove hexagon head 1 2 x 20 cap screw 14 Fig F092 located at right hand corner of pump base and in its place connect a pressure gauge of not less than 1708 and not more than 2500 psi capacity With the l
14. 1 2 of the values shown above 59 TIMING TO ENGINE The flywheel of production engines FARM FOO COM equipped with angle drive distributors is stamped with a 0 mark indicating top center position and with additional stamped lines from one to 20 degrees in one degree increments These marks appear in two places on the flywheel 188 degrees apart The degree lines index with a pointer at the flywheel inspection port located on the right side of engine Remove timing hole cover and crank engine until No 1 piston is starting up on compression stroke and the 16 18 degree line on the flywheel aligns with the flywheel inspection port pointer Place distributor rotor in approximate register with No 1 cap terminal and install distributor to engine but do not tighten clamp screw Next rotate distributor cam as far as it will go in the direction of its normal Fig F047 Magneto drive adapter optional equipment on 2N rotation While holding the cam 1 Drive coupling Ti Lower housing in this fully advanced position 2 loil wick 8 Plate screw rotate the distributor body in an opposite direction until breaker 3 Bushing 9 Bushing contacts just begin to open 4 Upper housing 10 Drive gear Tighten distributor clamp screw 5 Bushing 11 Bushing and install number one cylinder 6 Driven gear 12 adapter plate spark plug wire in the terminal which is over the rotor As indicated
15. 2 16 os ws 25 26 23 Fs BA 28 g Ge 30 Pea FIG F012 Exploded view of ball nut steering gear used on model 8N tractors after serial 216988 Sectors 7 have tapered teeth and right sector meshes with ball nut 1 Shaft upper bearings 15 Seal 25 Seal 2 Sector adjusting screw 16 Spring 26 Steering gear arm right 3 Screw shaft adjusting 18 Steering tube amp cover 27 Lock washer shims 4 Steering screw shaft 19 Steering shaft bearing 28 Sector cover bearing 5 Screw shaft amp nut assembly 20 Bearing retainer 29 Bushing 6 Left sector 21 Bearing retainer eyelet 30 O ring seal 7 Right sector 22 Bushing 33 Steering gear arm left 8 Lock nut 23 Packing 9 Shims 24 Retainer Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 ENGINE AND COMPONENTS R amp R ENGINE WITH CLUTCH 20 The engine and clutch assembly may be removed as a unit Drain cooling system and oil pan Remove hood disconnect battery ground strap and cable at starter Disconnect distributor and generator wires and cable at front end and swing wiring out of way Block up under transmission and support engine with a chain hoist Disconnect radiator hoses clutch linkage and front axle support Disconn
16. 2N 8N and 9N is provided with an interlock shown in Fig F042 which prevents starting the engine when the tractor is in gear DISTRIBUTOR EN 12127 ASSY ANT22TO ASSY REGULATOR 8N 10805 BATTERY IGNITION eR 14302 WIRE TERMINAL BLOCK A a ON K AMMETER y 9N 10850 8 54 On 2N 9N and 8N tractors prior to serial 263844 the Ford 9N12100 artery MARON battery ignition ae 2 10655 Wess distributor is mounted on Tak feast the front face of the STARTER I timing gear cover directly in line with camshaft Refer to Fig F044 In these installations the front end of the camshaft is slotted to receive a mating tang on the drive end of the distributor shaft Spark timing at speeds above idling is controlled by a centrifugal governor WIRE COLOR CODE amp CIRCUITS built into the 16 Red with green tracer Terminal block to ignition lock distributor Full automatic spark advance is 24 crankshaft degrees 12 distributor degrees 26 Black with red tracer Generator ground to regulator 2000 engine rpm 32 Red with blue tracer Starter solenoid to starter switch Recommended contact gap WOD OO4AW V4 IGNITION LOCK 8N 3679 8 SOLENOID 8N 11450 STARTER SWITCH 8N 11500 GENERATOR S8N 10000 8 OR C Fig F043A Schematic wiring diagram used on 8N tractors with 2 brush generators and angle drive distributors after tractor serial 263844 21 Yellow Terminal
17. 9 Shift lever lock 6 Pilot bearing 12 Shims 2 Starter push rod 10 ae rail lock 7 1 amp 3 gear 13 Bearing retainer 3 Starter rod lever 11 Shifter rails S Panina an rare 4 Shifter lever 12 Detent 5 Foot button 13 a8 and reverse 74 MAIN DRIVE GEAR Clutch Shaft shift fork This gearshaft 5 may be removed after en 14 15 8 3 fork transmission and engine are separated as in paragraph 64 and steering gear housing is off without disturbing other transmission parts However if bearing adjustment is required it will be necessary to perform the rear section split as in paragraph 70A to gain access to the mainshaft bearing shims 912 which control the adjustment Remove main drive gear and shaft 5 and bearing retainer 1 Renew worn or damaged parts and reassemble shaft and retainer carefully to prevent damage to oil seal 2 in retainer Oil seal is installed with seal lip toward rear Reinstall shaft assembly and check bearing adjustment as described for Mainshaft 8 Lever spring and 15 Detent ball and lock spring 75 COUNTERSHAFT This shaft 20 may be removed after mainshaft is out and Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 before reverse idler gear is removed Remove power take off shifter and bearing support as shown in Fig FO56 and remove shifter clutch hub from end of countershaft Remove countershaft and gear a
18. COM Fig F055 Transmission gears and shafts on models 2N 9N 1 Bearing retainer 10 Bearing cone 19 Snap ring 2 Oil seal 11 Bearing cup 20 Countershaft 3 Bearing cup 12 Shim 21 Bearing 4 Bearing cone 13 Bearing retainer 22 Bearing cup 5 Main drive gear 14 Bearing retainer 23 Shims 6 Pilot bearing 15 Gasket 24 Bushing 7 1 amp 3 gear 16 Bearing cup 25 Reverse idler gear 8 Mainshaft 17 Bearing cone 26 Shaft lock pin 9 2 amp reverse gear 18 Countershaft gear 27 Idler gear shaft 79 MAIN DRIVE GEAR Clutch paragraph 78A Shaft This gearshaft 1 Fig F057 may be removed after transmission and engine are separated as in paragraph 65 However if bearing adjustment is required it will be necessary to perform the rear section split as in paragraph 70A to gain access to the mainshaft bearing shims S which control the adjustment Remove gearshaft and retainer R as a unit Renew worn or damaged parts and reassemble shaft and retainer carefully to prevent damage to the oil seal in the retainer Lip of oil seal should face towards rear After shaft is reinstalled check bearing adjustment and if necessary readjust as outlined in Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 MAL JUS ray VAKAA t I ML AN Lo Tiga NW TIN u ai o N Pegs TN AE a F a
19. Disassembled worm shaft for steering gear used on 8N prior to tractor serial 216989 Nut 3539 and steering shaft 3524 are not sold separately FIG F010 Cross section side and top views of steering gear unit used on model 8N prior to tractor serial 216989 Sectors 6 amp 7 have Model 8N After 216988 straight teeth and left sector 6 is meshed with ball nut 12 ADJUSTMENT Before making 1 Shaft upper bearing 5 Ball nut any adjustments disconnect 2 Shaft and worm 6 Left sector both drag links at sector shaft gt ehem Eee arms and back off right and left side sector adjusting 4 Worm bearings screws FIG F012A two full turns after loosening the lock nuts Check adjustment of wormshaft bearings by pulling up and pushing down on steering wheel If any up and down play is present adjust to zero end play by varying the shims located at bottom of steering tube and cover Adjustment is correct when the pull measured at outer end of steering wheel spoke required to keep the steering wheel in motion after it has crossed the mid or center point is 1 2 to 1 1 2 pounds measured with a spring scale Shims are available in thicknesses of 002 005 010 and 030 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 13 SECTOR ARMS BACKLASH Before adjusting sector mesh make sure that wormshaft bearings are correctly adjusted as outlined in paragr
20. Legend above Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 88A To adjust bearings remove shims A Fig F069 or 3 Fig F070 from between right or left bearing retainer and axle housing until both shafts rotate in the same direction when one is turned Then add shims until shafts start turning in aN 4 5 FARMFOO COM Fig F070 Left axle shaft and housing assembly on early model 8N Later 8N models are similar except they include an inner oil seal not shown for each axle opposite directions This procedure will hold end play fro9m 002 to 0Q6 Shims Ford part 8N4229 are available in thicknesses of 008 015 and 020 RENEW AXLE BEARINGS Models 2N 9N 89 WHEEL AXLE SHAFT amp BEARINGS Jack up rear end of tractor and remove rear wheel and tire assembly Remove bearing retainer stud nuts as shown in Fig F069 and pull shaft and brake assembly out of axle housing Lift off brake and backing plate assembly to expose bearing retainer collar Fig F070 Legend Axle shaft Oil seal 9 Shoe retracting spring Bearing retainer Brake shaft 10 Brake shoes Shims Brake drum 11 Shoe adjusting screw gt w m i i o gt On Axle bearing Shoe adjuster wheel If shaft bearing requires renewal drill a 1 4 inch hole through collar and split it at drilled hole as shown in Fig F068 Remove be
21. Marks indicating top position of lift arms Fig F080 On model SN the quadrant 62 Position drawbar control lever is correctly positioned when lever 38 68 Lock nut for position control spring first contacts housing 19 just as the 373 touch control lever reaches its full UP position on the quadrant Constant draft control spring 79 Shoulder flange on draft control bushing 80 Swivel 81 Nut for adjusting length of constant draft 100 CONTROL SPRING To check control spring control spring adjustment place lift in UP position and using a thumb and two finger grip note if spring can be rotated as shown in Fig F079 If spring cannot be rotated or if it has any end play adjust by turning the threaded yoke as shown Model 8N 101 QUADRANT To check the quadrant adjustment first remove the inspection plate from the left side of the axle center housing and disengage the position control lever 62 Fig FO78 smaller lever of the two on the lift cover by moving it forward to the down position While slowly moving the touch control lever larger lever of the two toward top of quadrant with the right hand use the left hand to determine when the valve control leer 38 Fig F080 contacts the pump housing If Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 the quadrant position is correct valve lever 38 will first contact the pump housing at
22. Remove the PTO shaft as outlined in paragraph 95 Remove inspection port cover and PTO shift lever cover from right and left sides of rear axle center housing On the 8N models remove the cap screws retaining the pump to the center housing and withdraw the pump On models 2N and 9N disconnect the fork 53 Fig F084 from the control valve 11 by spreading fork slightly then remove the pump retaining cap screws and withdraw the pump When reinstalling the pump insert the PTO shaft then tighten the retaining screws only slightly Rotate engine several revolutions with PTO engaged to permit pump to center itself then tighten the retaining screws securely Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Fig F092 Legend B Bushing 15 Pump cam 30 Relief valve C Valve chamber 16 Cam block 2 used 31 Check valve spring 2 Valve clamp 17 Pump yoke piston 2 used 32 Check valve 3 Plug 18 PTO shaft bushing 34 Exhaust control valve 4 Spring for outlet valve 19 Pump base 35 Exhaust valve spring 5 Outlet valve 22 Drain plug 36 Exhaust valve retainer pin 6 Inlet valve spring 23 Gasket for plug 37 Pivot pin 7 Inlet valve 24 Bushing for intake control 38 Intake amp Exhaust valves valve control rocker lever 8 Valve guide 27 Button plug 39 Gasket 9 Valve guide socket 28 Intake control valve sprin
23. be lapped in its seat Seat width should not exceed 125 If seat requires narrowing use a 30 degree stone for top of seat and a 60 degree stone for the bottom VALVE GUIDES AND SPRINGS 25 Early production guides used in models 2N 9N and 8N tractors prior tractor serial 42162 are made in halves and should be kept together with the mating valve to maintain stem to guide clearance Later production guides used in model 8N tractors after serial 42161 are one piece type Valves used with two piece guides have a stem diameter of 311 stem diameter of valves used with one piece guides is 341 Stem to guide clearance wear limit is 005 for inlet and 006 for exhaust valves New guides or guides with least wear should be used with inlet valves Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 VALVE SPRING 0002 004 NEW 010 MAX WORN CLEARANCE CAP The one piece valve guides can be installed in engines originally equipped with the two piece type If valve rotators are not included in the change over it will be necessary to use the same valve springs as used for the two piece type of guide Springs in tractors with two piece valve guides should test 37 48 pounds 2 1 8 inches for one piece guides FARMFOO COM Fig F017 Free valve type exhaust valve rotators used on later engines and available in kit form for early engines 41 44 pounds 1
24. block to ignition lock 24 Red Coil to terminal block is 015 or a dwell of 35 35 Black with white tracer Generator field to regulator 38 degrees The Ford 36 Yellow with black tracer Generator armature to regulator 91A123 condenser is 37 Yellow Regulator to terminal block of 29 32 mfd capacity 38 Yellow Starter solenoid to terminal block and should have an insulation resistance of Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 5 megohms 210 F 55 TIMING TO ENGINE Adjust breaker contacts to 015 gap by loosening the two hold down screws Fig F044 and turning the eccentric screw Place a scale against the tang on the wide side of the distributor shaft as shown amp inert fe in Fig F045 then rotate the shaft T i Kk RN a rN until the scale is 1 4 inch from bi i _ JETI OR SREAKER ARN the near edge of the small mounting i3 SARU S hole as shown With shaft in this position the contacts should be just starting to open Move the adjustment plate on the left side of the distributor down to advance the timing up to retard the timing If proper timing is not obtained on the first attempt turn shaft backward turn to eliminate backlash then repeat the check CONTACT HOLD DOWN SCREW Fig F044 Distributor breaker contacts of Ford 8N12100 distributor used on models 2N 9N and 8N prior
25. in the preceding paragraph this timing procedure sets the fully advanced or running timing of the distributor which is 16 18 degrees before top center at 2000 engine rpm Recheck timing with a timing light To check action of the distributor governor operate the engine at 400 rpm or less at which time the spark should occur at top center plus or minus two degrees Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 60 DISTRIBUTOR OVERHAUL Procedure for overhaul of the distributor is conventional When the running clearance of distributor shaft exceeds 006 renew the distributor base bushing or the shaft and bushing MAGNETO IGNITION SYSTEM Model 2N 61 Some model 2N tractors are equipped with magneto ignition systems A Fairbanks Morse FM J4B73 magneto is used and is driven by the camshaft through a magneto drive adapter as shown in Fig F047 Refer to Standard Units manual for detailed overhaul and test information on magnetos 62 MAGNETO TIMING The magneto mounting flange and mating adapter flange are provided with slotted holes to permit timing adjustment The magneto uses an impulse coupling with a 15 degree lag angle which automatically advances spark timing that amount when the engine starts to run For timing purposes the impulse coupling should trip when number one piston is at top dead center of compression stroke 62A DRIVE ADAPTER OVERHAUL Adapter is mounted on front of tim
26. may be mounted and operated in right or left horizontal position or in down vertical position On 8N models the belt pulley revolves at 1358 rpm when the crankshaft speed is 2000 rpm R amp R amp OVERHAUL 97 Removal of unit requires removal of four cap screws which hold unit to rear axle center housing To reinstall engage splines on PTO shaft and belt pulley unit and install four cap screws after locating unit in desired operating position 97A Overhaul procedure is as follows Drain lubricant and remove housing cover 13 Fig FO77 and gasket Remove castellated nut 6 from inner end of pulley shaft This nut must be unscrewed in stages as shaft is being removed Remove fig F077 Belt pulley assembly optionally drive shaft and gear 11 out available on models 2N 8N 9N FARMFOO COM through housing cover opening 1 Pulley shaft 8 Bearing cups Pulley shaft gear 5 and drive 01 seal 9 Oil seal shaft gear 11 are furnished 3 Shaft bearing cone 10 Drive shaft bearings only as a matched set The mesh 4 Shaft bearing cone 11 Drive gear amp shaft and backlash of these gears ts 5 Pulley shaft gear 12 Drive shaft bearing fixed and non adjustable Install oil seals with lips 6 Gear retaining nut 13 Cover amp gasket facing inward 7 Housing amp bearing cups Adjust pulley shaft bearings to a just perceptible preload by means of pulley nut 6 When only
27. or scored or worn Reface inlet and exhaust valves to an angle of 45 degrees Correct valve tappet clearance cold is 010 to 013 for inlet and sting from 014 to 016 for exhaust valves On Jack fype Lifter a mal engines with non adjustable type tappets grind Fig F014 Removing valve valve valve stem end to correct insufficient spring and guide as an assembly clearance or grind valve head or seat faces to correct excessive clearance Use a lever type tool to reinstall valve guide retainers as shown in Fig FO16 ete halal ttl yt E Stem Diameter Two piece Guides 3105 3115 Stem Diameter One piece Guides 341 342 Clearance In Guide Inlet 002 004 Clearance In Guide Exhaust 0025 0045 Prem d 22A Follow procedure for removing and refacing retainer preparatory to removal of valves as outline in paragraph 22 On engines valve spring and guide as an with free type exhaust valve rotators a gap or assembly end clearance of 0002 004 must exist between cap and end of valve stem Refer to paragraph 31 for checking procedure and method of correcting the clearance Correct valve tappet clearance is 010 012 cold for inlet and 014 016 cold for exhaust valves Free Valve Type Exhaust Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 EXHAUST ROTORS 23 Some 8N engines are equipped with free valve type exhaust valve rotators which are also availa
28. or damaged mounted on rear wall of transmission housing Models parts Shrunk on bearing 2N 8N 9N Refer also to Fig F057 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 retainer sleeve must be broken to permit bearing renewal New sleeve must be heated to facilitate installation and insure a tight shrink fit Refer to Figs F074 and FO76 Fig FO76 Power take off shaft assembly as used on 8N and late production 2N models 1 Shaft and sleeve 4 Sleeve 7 Bearing 2 Shaft cover cap 5 Oil seal 8 Snap ring 3 Shaft cover 6 Snap ring Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 SHIFTER UNIT 96 To remove the shifter and shaft front bearing unit from the tractor detach the center housing from the rear of the transmission housing as outlined in paragraph 70A or remove the hydraulic lift cover assembly from the center housing Remove the cap screws retaining the unit to the rear wall of the transmission housing Fig F056 Procedure for overhaul is self evident after examining the unit or the components as shown in Fig F075 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 BELT PULLEY UNIT The belt pulley is supplied as extra equipment and
29. sector arms are parallel and both point slightly rearward Grasp left sector arm and check gear backlash while Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 steering wheel is held steady to prevent movement of worm If any backlash is felt proceed as follows ry STEERING SHAFT 3524 ASSEMBLY 4509 RATTA COVER AND TUBE ASSEMBLY 350 WASHER 3579 SECTOR SHAFT HOUSING HOUSING 3548 AND BUSHING asd f Dia SECTOR SHAFT a E 7 SECTOR SHAFT _ New GASKET 3581 GASKET 3581 COVER AND BUSHING ASSEMBLY 3584 FARMFOO COM WASHER 3579 PITMAN ARM 3590 Fig F08 Disassembled sector shafts of ball nut gear used on model 8N tractors prior to serial 216989 Later type is shown in Fig FO12 8 SECTOR MESH ADJUSTMENT Remove four cap screws from left viewed from rear of tractor sector shaft cover Fig F08 Rotate cover and metal gasket counter clockwise viewed from left side of tractor as far as possible by hand and reinstall cap screws in four matching holes Recheck backlash and if none is present proceed to adjust right sector in a similar manner rotating right sector shaft cover clockwise to remove backlash instead of counter clockwise IF BOTH SECTOR ARMS NOW HAVE ZERO BACKLASH STEERING GEAR UNIT IS COMPLETELY ADJUSTED AND WORM SHAFT END PLAY ADJUSTMENT OUTLINED IN PARAGRAPH 9 WILL NOT BE REQUIRED Adjustment is correct wh
30. spring control fork 53 Remove cap screws retaining one lift arm 59 to lift shaft 45 then bump end of lift shaft which will remove lift shaft ram arm 46 and one lift shaft bushing 68 Push other bushing from housing Remove hand control quadrant 56 and attached parts 107 Clean all parts in an approved solvent being sure to remove all gum carbon or varnish from the surfaces Renew any worn corroded or scratched parts Clearance of piston 48 in ram cylinder 50 should be not less than 0012 and not more than Fig F083 Left cover assembly and 0025 Bushing 60 are presized and if hydraulic pump being installed to carefully installed will require no final rear axle center housing sizing after installation Check linkage for being bent or twisted and renew such damaged parts 108 Reassemble the unit by reversing the disassembly procedure When reinstalling lift arms tighten the retaining cap screws until arm shaft binds then loosen screws until arms can be raised and lowered freely After reinstalling unit to tractor adjust the control spring and quadrant as in paragraphs 99 and 100 Model 8N 109 R amp R COVER FROM TRACTOR To remove lift cover unit from tractor first remove the tractor seat and the pin from the main control spring yoke 41 Fig FO78 Disconnect lift arms from leveling arms by removing cotter pins and clevis pins Move the touch control lever 57 larger of two levers to the down position a
31. the crosshatch marks on the sleeve The crosshatch marks should intersect at approximately 90 for proper ring seating Operate the hone through the bore 10 or 12 complete strokes Remove the hone clean the sleeve with dry rags and recheck the piston fit as per paragraph 32A Repeat the above procedure until the necessary amount of material has been removed for the specified piston to bore fit as tabulated in paragraph 32A CAUTION Do not use gasoline or kerosene to clean the sleeve walls after the honing operation Solvents of this type will not remove the abrasive but will further imbed small abrasive particles into the pores of the cylinder sleeves 33B CLEANING AFTER HONING After the honing is completed clean the cylinder block of all foreign materials as follows Wipe or remove as much of the abrasive material as possible Swab each sleeve wall with clean SAE 10 Engine Oil at least twice Wipe the oil out of the sleeves with clean rags Wash the sleeve bores with hot soapy water Flush water jackets to remove foreign material which might cause excessive wear to the water pump Remove the rags from the crankshaft and wash the crankshaft off with hot soapy water Dry the cylinder block thoroughly using compressed air Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 34 Pistons are either cast steel or aluminum alloy Aluminum pistons should be installed with notch in p
32. tighten locknut 68 securely LIFT COVER ASSEMBLY Models 2N 9N 105 R amp R COVER FROM TRACTOR To remove lift cover unit from tractor first remove the tractor seat and the inspection plate from left side of axle center housing as shown in Fig F083 Working through the inspection cover opening spread the hand lift control fork 53 Fig F084 until lower ends of same are released from the pump control valve 11 Disconnect the leveling rods from the lift arms Remove R Marks indicating top position of lift arms the pin from the lift rocker 106 Remove approximately a __FARMFOO COM Fig FO82 Adjusting the position drawbar control spring 76 on 8N tractor 62 Position drawbar control lever 14 cap screws retaining 68 Lock nut for position control spring cover unit to center housing 71 Pin and lift the assembly off 77 Lower end of position drawbar control rod the housing After reinstalling cover adjust the quadrant and control spring as outlined in paragraphs 99 and 100 84 Lift control lever arm Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 106 DISASSEMBLE AND OVERHAUL Procedure UFTZARMS for disassembly of the lift cover assembly is self evident by an examination of the unit and reference to Fig F085 The general order of disassembly is the ram cylinder 50 control spring 42 lift control fork and
33. 00 pounds on the lift arms and move the touch control lever downward The lift arms should start to lower when the touch control lever reaches a point 2 5 8 to 2 3 4 inches down from the top position If lift arms start moving before or after the specified lever position loosen the 4 quadrant attaching screws Q Fig F078 and A ad baat ost ek DET rper Fig F078 Model 8N hydraulic system has automatic draft control and automatic control of implement position follow up the position control lever 62 is not used on models 2N and 9N Q Quadrant unit 41 screws Yoke for main control spring X Inspection plate 57 Touch control lever Fig F079 Adjust main control spring by rotating the threaded yoke as shown Main control spring is listed as lift draft control spring in Ford parts catalog TIE 3731 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 move quadrant toward front or rear as required If touch control lever will not remain in any set position tighten the castellated nut at external end of touch control lever shaft Recommended frictional drag is when a 4 5 pound pull at end of lever is required to move the lever FARMFOO COM Fig FO81 On model 8N adjust the constant draft control spring to 3 9 16 inches length by means of adjusting nut 81 LP Pad surface of control arm R
34. 1 125 1 126 NOTE Do not disassemble the unit shown in Fig FO9 Any derangement of excessive wear in any of the components of this screw shaft and ball nut assembly is corrected by renewal of the nut and shaft unit Ford part 8N3575 as the individual parts are not catalogued Install worm shaft and nut assembly with nut positioned at approximate center of worm and adjust worm shaft bearing end play as described in paragraph After Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 bearing adjustment is completed hold ball nut and rotate worm shaft until nut center tooth aligns with center of left sector shaft opening See Fig FO1Q Assemble left sector shaft three large and four small teeth and its housing to gear housing with center tooth of three large sector teeth meshed with center space of teeth on ball nut as shown The sector housing is installed with locating notch at bottom Adjust left sector backlash as described in paragraph 8 FARMFOO COM Assemble right sector meshing center tooth of same with third tooth space on left sector gear counting from solid section of gear located on bottom as shown in Fig F010 Right sector center tooth is marked on end of tooth and left sector tooth space is similarly marked Adjust backlash as described in paragraph 8 Fill gear housing with SAE 90 oil through filler hole in side of housing and reinstall assembly FIG F011
35. 1 Yellow 8N640D 5923 5924 Green 8N640E 5925 5926 Orange Bushing B for exhaust control valve is pressed into pump base and should be renewed if scratched or otherwise damaged Bushing should not be sized after installation It should be installed flush with face of pump base and with holes in such position as to assure easy insertion of the locking cotter pin Bore diameter of bushing is 5926 119 SAFETY AND CHECK VALVE UNIT A check valve 32 Fig F094 is combined with the safety relief valve 30 mounted in the pump base The safety valve is factory adjusted to unseat at a minimum pressure of 1600 psi if any parts of this valve are worn or broken or show signs of leakage install a new valve unit Inspect the check valve for signs of leakage Improper seating may be due to irregularities of the seat in the pump base which can be corrected by using the special Ford reseating tool or equivalent as shown in Fig F096 Leakage signs on the valve 32 Fig F094 can be corrected by renewal of the valve followed by lapping if necessary Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 120 INLET AND OUTLET VALVES Inlet and outlet valves 5 and 7 Fig F092 are contained in each of the valve chamber covers If inspection indicates valves are not seating perfectly same can be reseated using special Ford reseater as shown in Fig F097 and the valves can be refaced If valves leak after this
36. 46 Lift ram arm 57 Touch control lever 47 Connecting rod for ram piston 58 Quadrant stop 48 Ram piston 59 Lift shaft arm 49 Piston rings 60 Bushing 50 Ram cylinder Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 u FARMFOO COM Fig F086 Model 8N lift housing cover 52 touch control lever 57 control spring 42 and related parts Refer to Fig F087 41 Control spring yoke 56 Quadrant 42 Main control spring 57 Touch control lever 43 Plunger guide 60 Bushing 44 Main control spring plunger 62 Position drawbar control lever 52 Lift housing cover 86 Detent ball amp spring 54 Control lever shaft 88 Flat washer 55 Friction plate amp disc 101 Spring Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Fig F087 Model 8N ram cylinder 50 lift shaft arms 59 constant draft control rod 73 position control lever and linkage units which are mounted on the hydraulic lift cover See Legend below Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Fig F087 Legend 45 Lift shaft 70 Drawbar control arm 46 Lift ram arm 72 Dowel pin 47 Connecting rod for ram piston 73 Draft control link 48 Ram piston 74 Clevis pin 49 Pisto
37. 80 inches Renew valve springs if protective pain coating is lost or if tension is less than specified VALVE PUSH RODS TAPPETS 26 Valve pushrods tappets are of the barrel type On tractors built prior to 1951 the tappets are of the non adjustable type later tractors are equipped with adjustable tappets Adjustable type tappets can be installed in engines originally equipped with the non adjustable type and this change over is recommended Adjustable tappets are also Essen included in Ford Special 5 Equipment Kit 8N6546B which provides special exhaust valve rotators This kit can be installed in 2N 9N and early 8N tractors Tappet clearances gaps of 010 012 inlet 014 016 exhaust cold are used on both types of tappets REAR HOLE OF TAPPET FARMFOO COM Tool 8N 17046 A Left Hand Tool 8N 17045 A Right Hand Fig F018 Showing special tappet holding wrenches needed for adjustment of Ford engines with adjustable type tappets A regular tappet end wrench should be ground off as shown in upper left Method of adjusting the adjustable type tappets is shown in Fig F018 Required are Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 a left hand tappet holding wrench Ford 8N17046A right hand tappet holding wrench 8N17045A and a conventional tappet wrench ground off so that it does not extend past the adjusting screw 27 FREE TYPE EXHAUST VALVES
38. F067 and move pinion and bearing carrier out toward front using a suitable puller Disassemble pinion and bearing assembly and renew worn or damaged parts Reassemble pinion and bearings and adjust bearings as shown in Fig FO66 until a torque of 12 to 16 inch pounds is required to turn pinion After adjustment bend tabs on lockwasher to secure shaft nuts If rear pinion bearing is to be renewed differential unit must be removed to provide necessary clearance It is advisable but not necessary to renew the bevel drive gear and pinion as a matched set Drive gear and pinion mesh is not adjustable Fig F069 Legend A Shims 19 Axle housing 27 Brake back plate 18 Axle shaft 26 Brake drum 29 Brake shaft 87 BEVEL RING GEAR To remove bevel ring gear from tractor remove the differential unit as outlined in paragraph 84 To renew the ring gear follow the appropriate portions of the procedure outlined in paragraph Error Reference source not found ADJUST AXLE BEARINGS 88 SHAFT BEARING ADJUSTMENT To check axle shaft bearing adjustment jack up tractor and remove wheel and tire assemblies Rotate either shaft and observe whether opposite shaft rotates in same or in opposite direction If both shafts revolve in the same direction bearings are adjusted too tightly IM REN Ber 6 EE Fig F069 Removing axle shaft and brake assembly on models 2N 9N to adjust end play of wheel axle shafts See
39. FOO COM clearance on a new shaft Fig F026 Disassembled view of oil pressure relief valve mounted on front of timing gear cover on models 2N 8N 9N Relief Valve Spring Tension Oz s 31 33 1 380 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Gearshaft Clearance in Bushing Idler Gear Clearance on Shaft Cover Screws Torque Ft Lbs Gear Backlash Ver 1 2 05 24 2015 0005 0015 0025 0045 7 10 003 004 FARMFOO COM Fig F027 Oil circuit of 2N 8N 9N engine showing path of pressure oil and lubrication of walls and gears Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 CARBURETOR 42 The carburetor is a Marvel Schebler up draft type and is provided with throttle and choke controls located on steering column and instrument panel respectively A removable fuel strainer is provided as a part of fuel inlet elbow on carburetor Make sure that packing in drain hole at bottom of carburetor is in place or dirt and dust will be drawn into the system Float setting is 9 32 inch from nearest face of float to gasket face of throttle body Production model 2N and 9N tractors are equipped with a Marvel Schebler model TSX33 carburetor Production model 8N tractors prior to 276115 are equipped with a Marvel Schebler TSX241 8N
40. Lift out differential assembly made accessible by removal of axle housing Reinstall parts in reverse order of removal using manufacturers standard thickness axle housing to rear center housing gaskets to assure correct differential bearing setting Fig F064 When left axle housing is removed the differential can be lifted out Models 2N 8N 9N THRUST WASHER 4228 DIFFERENTIAL SIDE GEAR 4236 DIFFERENTIAL SPIDER GEARS 4215 THRUST WASHERS 4230 DIFFERENTIAL SIDE GEAR 4236 THRUST WASHER 4228 oa DIFFERENTIAL GEAR aa CASE ASSEMBLY 4206 ST ay eS SA 1 g s r A wet N z ee RINGI GEAR DIFFERENTIAL nS 4210 BEARING 4221 THRUST WASHERS 4230 A DIFFERENTIAL SPIDER GEARS 4215 DIFFERENTIAL SPIDER 4211 oc DIFFERENTIAL BEARING CUP 4222 BOLTS 4216 DIFFERENTIAL BEARING 4221 i FARMFOO COM DIFFERENTIAL BEARING CUPL 4222 Fig F065 Exploded view of differential as used in models 2N 8N 9N Bearing cups 4222 are mounted in axle housings DIFFERENTIAL GEAR CASE ASSEMBLY 4205 n fe Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Fig F066 Adjusting bearings of main drive bevel pinion a Fig FO67 Rear axle and differential assembly as used on models 2N 9N The 8N is similar except details of brakes and wheel axle shafts 1 Brake drum 4 Retainer coll
41. aph 12 Make sure that drag links are disconnected at sector shaft arms and back off right and left side sector adjusting screws Fig FO12A two full turns Turn steering wheel to mid or wheels straight ahead position Now using a screwdriver rotate the right hand sector adjusting screw viewed from rear of tractor until all backlash is removed from right sector arm Correct adjustment is when 2 to 3 pounds of pull is required to maintain the steering wheel in motion through the straight ahead or mid position drag links disconnected and opposite sector adjustment backed off After adjusting the right hand sector as just mentioned repeat the procedure on the left sector A pull of 2 1 2 to 6 pounds measured at rim end of wheel spoke should be required to maintain the steering wheel in motion through the mid or straight ahead position after both of the sectors and the steering post bearings have been adjusted and drag links disconnected i BEARING CUF 3552 SEAL 3570 BEARING CUP 3552 NUT 3539 SPRING 3520 ROLLER BEARING 35471 Pari k t L 1 BEARING 3517 ied Pa i BALL RETAINERS SPRING SEAL 3518 Housing STEERING SHAFT 3524 Ve 3548 Baus 353110 FARMFOO COM POE N Fig F011 Disassembled worm shaft for steering gear used on 8N prior to tractor serial 216989 Nut 3539 and steering shaft 3524 are not sold separately 14 OVERHAUL Major overhaul of gear unit necessitates the removal of t
42. ar 7 Axle shaft 2 Bearing carrier 5 Brake adjuster 8 Brake rod 3 Axle bearing 6 Pinion carrier 9 Shims cap screws 85 OVERHAUL Remove differential assembly as described in paragraph 84 Remove eight differential case bolts and separate the two case halves See Fig F065 Remove spider differential SS Be pinions and thrust washers Check differential Fig FO68 Removing the bearings and renew if required If bearing cups are shrunk on wheel axle shaft to be renewed both axle housing must be off the bearing retainer collar transmission and shafts removed from housings to clear bearing cups for removal Differential case and main drive bevel gear are riveted together and are usually renewed as an assembled unit However if a new drive gear is installed on an old case the case must be checked for trueness before riveting drive gear in place After riveting is complete check trueness of assembled unit Renew worn parts and reassemble differential Align the matching numbers stamped on differential case when assembling and lock case bolts with wire Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 MAIN DRIVE BEVEL GEARS 86 BEVEL PINION To remove main drive bevel pinion first separate rear axle center housing from transmission a outlined in paragraph 70A and remove hydraulic power lift and pump units Unscrew six mounting cap screws 6 Fig
43. aring and retainer assembly using a suitable puller Unbolt brake drum and remove same Reinstall parts in reverse order of removal renewing axle shaft oil seal bearing or brake drum as required The bearing retainer collar is a shrink fit and must be pressed or driven on shaft after collar is heated to expand it Adjust wheel bearings as outlined in paragraph 88A Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Model 8N 98 WHEEL AXLE SHAFT AND BEARINGS Jack up rear end of tractor and remove the rear wheel and tire assembly Remove brake drum as shown in Fig F071 and use a suitable puller to remove wheel hub Remove bearing retainer stud nuts and pull retainer and brake assembly off axle housing Pull axle shaft out of axle housing Wheel axle shaft bearings can be renewed at this time Reinstall parts in reverse order of removal Adjust wheel bearings as outlined in paragraph 88A Tighten axle shaft nut using 458 foot pounds torque and install lock ring Refer also to Fig FO 70 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 BRAKE SYSTEM ADJUSTMENT Models 2N 9N 91 To adjust brake shoes jack up rear wheels and turn adjusting stem shown in Fig F072 clockwise until wheel no longer can be turned by hand and then back off adjusti
44. arings 37 37 Magneto Ignition 61 62A Crankshaft Oil Seals 38 38 Cylinder Head 21 21 POWER TAKE OFF 95 96 95 96 Cylinder Sleeves 32 33 32 33 Flywheel R amp R 39 39 REAR AXLE Flywheel Timing Marks 39A 39A Bearing Renewal 89 90 Front Oil Seal 38 38 Seals Renewal 89 90 Ignition Timing 55 62 55 59 Shaft R amp R 89 90 Main Bearings 37 37 Oil Pan 40 40 STEERING GEAR Oil Pump 41 41 Adjustment 6 12 Pistons 32 32 Overhaul 6B 11 14 Piston Pins 35 35 Remove amp Reinstall 6A 11 Piston amp Rod Removal 30 30 TRANSMISSION Piston Rings 31 32 Assembly R amp R 70 70A 70 70A Rear Oil Seal 38 38 Bevel Pinion 86 86 Tappets 26 26 Clutch Shaft 74 79 Timing Gear Cover 28 28 Countershaft 75 80 Timing Gears 28A 28A Main Drive Gear amp Shaft 74 79 Valves 22 22A 22 22A Mainshaft 72 78 Valve Guides 25 25 Reverse Gear 76 81 Valve Push Rods 26 26 Shifter Rails and Forks 71 77 Valve Rotators 23 27 126 27 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 MODELS 2N 9N 8N Valve Seats 24 24 Valve Springs 25 25 Valve Timing 28A 28A Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 CONDENSED SERVICE DATA Tractor Models 2N 8N 9N GENERAL Engine Make Own Engine Typ
45. ble as a kit for engines not so equipped Kit contains among other items 8 adjustable type tappets pushrods 4 exhaust valves equipped with special caps and horseshoe type spring retainers as shown in Fig F017 Tappet clearances of 018 12 cold for for inlet and 014 016 cold for exhaust valves are same as on non adjustable tappets but rotator caps must be adjusted as outlined in paragraph 27 VALVE SEATS 24 All tractors except ET TE model 2N tractors within the serial range of 86271 to 168259 are equipped with inlet and exhaust valves seats of the hardened insert type Model 2N tractors within the preceding serial range are equipped only with exhaust valve seat inserts VE GUIDE BUSHING RETAINER 6512 FARMFOO COM a i If seat renewal is necessary mek FS and special equipment for Fig F016 Special tool for installing valve that purpose is not guide retainers available inserts may be removed as follows Drill two holes partly through insert on opposite sites using a drill smaller than insert width then crack insert at holes and remove the two halves Counterbore in block must be 0015 to 003 smaller than measured diameter of new seat insert Pack new insert in dry ice for at least 15 minutes and then drive or press it in place making certain that it is bottomed and not cocked After insert is installed grind the seat to 45 degrees angle using a seating stone If a seat cutter is used each valve should
46. crews and pull cover off engine 28A The camshaft timing gear is made of aluminum alloy material On early model 9N tractors camshaft gear is tightly pressed on shaft and requires special fixtures for proper installation and is usually removed with camshaft as an assembled unit Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 On later tractors the gear is bolted on and may be removed without disturbing camshaft Cam gears are available in the bolted on type in two oversizes 006 and 012 Camshaft gears of the pressed on type are supplied for service However service camshafts for this type of gear installation are discontinued and only camshafts of the bolted on gear type are supplied Renewal of crankshaft gear requires use of puller and removal of front main bearing cap and oil pump assembly When reinstalling camshaft gear mesh timing marks on gears as show in Fig F020 and use extreme care so as not to injure or scrape the comparatively soft tooth faces of the camshaft gear CAMSHAFT R amp R 29 Remove the timing gear cover as outlined in paragraph 28 Remove cylinder head and valves Lift push rods out of bores and pull camshaft out toward front Renew camshaft if journals are worn and measure less than 1 795 or if cams or journals are scored or corroded Install camshaft in reverse order of removal and mesh timing gears as in Fig F020 Check camshaft end play by measuring
47. d Spring may be adjusted by bending the loop on the spring with pliers Check engine speed at Power Take Off shaft or belt pulley after engine is warmed up Correct governed speed with hand throttle lever in last quadrant notch or wide open is 727 to 800 PTO shaft rpm 2000 to 2200 engine rpm or 1358 to 1494 belt pulley rpm Fig F028 Novi ball type governor used on models 2N 8N 9N tractors If crankshaft speed exceeds 2200 rpm or power take off speed exceeds 800 rpm with throttle lever in last quadrant notch turn in maximum speed stop screw Fig F028 5 until speed is 1 Inner lever 5 Stop screw correct If engine overspeeds before hand 2 Spring 6 Housing throttle is wide open adjust model 2N 9N 3 Outer 1 7 Flyball t linkage by holding throttle shaft lever at A z AAA i 2 Fig F030 and bending linkage until speed is 4a Oiler elbow Br Drive gear correct or by lengthening governor link rod on model 9N as shown in Fig F031 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 re INN A N N Fig F029 OTE ee FARMFOO COM 5 oiling system on models 2N 8N Fig F030 Showing point A where governor 9N linkage on models 2N and 9N is to be held while bending eee W prevent over on ar BEIDE 45 OVERHAUL Remove governor from engine Remove flyball unit shaft and driven gear assembly
48. dard and in oversizes of 20 030 and 040 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 32 Steel sleeves are removed from cylinder block with a crushing tool Drive tool to bottom of cylinder and lift out the collapsed sleeve Install a new sleeve using a suitable piloted arbor as shown in Fig F024 then check installation with a plug gauge or new piston and feeler of correct thickness If recheck shows new sleeve was buckled during installation it must be removed and a new one installed Fig F024 A piloted mandrel is used to prevent wall buckling of steel cylinder sleeves 32A Iron sleeves should be removed from block using a sleeve puller They should be carefully installed and checked for bore distortion after installation If check shows sleeves have distorted or if piston skirt Fie F024 A piloted mandrel is clearance is less than specified below they should be final sized with a suitable cylinder hone used to prevent wall buckling of steel cylinder sleeves Check pistons and sleeves for scoring out of round and clearance condition against the values as listed Sleeve Inside Diameter 3 1875 3 1885 Renew Sleeve if Out of Round 003 Renew Sleeve if Tapered 006 Renew Piston if Ring Side Clearance Exceeds 004 Desired Fit Piston Skirt in Sleeve Using x 002 feeler for aluminum 003 for cast steel 5 10 lbs pull Renew Piston and or Sleeve
49. e L Head Cylinders 4 Bore Inches 3 3 16 Stroke Inches 3 3 4 Displacement Cubic Inches 119 7 Compression Ratio Kerosene 4 75 Compression Ratio Gasoline 2N 9N Early 8N 6 1 Later 8N 6 7 Pistons Removed From Above Main Bearings Number of 3 Main Bearings Adjustable No Rod Bearings Adjustable No Cylinder Sleeves Dry Wet Dry Production Cylinder Sleeves Material 8N Prior 433578 2N 8N Steel Production Cylinder Sleeves Material 8N After 433577 Iron Service Cylinder Sleeves Material Iron Forward Speeds 2N 9N 3 Forward Speeds 8N 4 Generator Make Own Starter Make Own TUNE UP Firing Order 1 2 4 3 Valve Tappet Gap Inlet 10 12C Valve Tappet Gap Exhaust 14 16C Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Exhaust Tappet Gap Fitted With Rotators Valve Face Angle Degrees Valve Seat Angle Degrees Ignition Distributor Make Distributor Model 8N Prior 263844 2N 9N Distributor Model 8N After 263843 Breaker Gap Angle Mounted Distributor 8N12127 Retarded Timing 8N Prior 263844 2N 9N Retarded Timing 8N After 263843 Advanced Timing 8N Prior 263844 2N 9N Advanced Timing 8N After 263843 Flywheel Timing Mark Indicating Retarded Timing 8N Prior 263844 2N 9N Retarded Timing 8N After 263843 Advanced Timing 8N Prior 263844 2N 9N Advanced Timing 8N After 263843 Distributor Governor Advance Curve Spark Plug Make Spark Plug Model for Gasoline
50. ect front end of radius rod and mating drag link on either side then swing axle and front end assembly away from engine Remove cap screws holding engine to transmission housing and separate engine from housing Reinstall engine in reverse order of removal See Fig FO13 CYLINDER HEAD R amp R 21 Drain cooling system remove hood and upper radiator hose Remove ignition cable harness and cylinder head stud nuts Remove cylinder head and gasket When reinstalling head tighten center stud nut first and progress alternately to ends of head using 50 55 foot pounds torque on nuts 65 70 on cap screws FARMFOO COM ee ANG SECT N FRONT AXLE ASSEMBLY ei PARRER KEREN FIG F013 Method of removing engine on models 2N 8N 9N Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 VALVES an TU VALVE ASSEMBLY Inlet amp Plain Exhaust 22 Inlet and exhaust valves are not interchangeable Valves removed for grinding or refacing should be reinstalled in their original location Valves guides and springs are removed from the top after cylinder head and valve chamber covers are off and valve guide retainers are out Use a hook type puller as shown in Fig F015 to extract retainers from valve guides then remove each valve guide and spring unit from cylinder block with a jack type lifter as shown in Fig F014 Renew valves having deeply pitted or warped heads or stems that are bent
51. ed if it is out of copyright it can be shared Email me to learn more to participate to download manuals as they become available ERRORS and OMMISSIONS If you discover an error with this manual please email jcchapster gmail com and I will correct and release an updated version John Chapman Tractor Manual Archive administrator Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Change log 5 23 2015 Corrected some images placements and typos Moved to version 1 1 5 24 2015 Corrected some other minor issues Moved to version 1 2 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 SHOP MANUAL FORD Models 8N 8NAN 2N 2NAN 9N 9NAN Ford Ferguson Serial number is stamped on left side of engine block Beginning Tractor Serial Numbers Models 9N 9NAN Models 2N 2NAN 1942 99047 1943 105412 1939 1 1944 126575 1940 10276 1945 170018 1941 46018 1946 198767 1942 88934 1947 258540 Models 8N 1947 1948 1949 1950 1951 1952 8NAN 1 37908 141370 245637 343593 442035 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 INDEX By Starti
52. en pull required to rotate steering wheel through mid or straight forward position is not less than 2 1 2 or more than 6 pounds with drag links disconnected Measure pull with a spring scale hooked to rim of steering wheel and read scale when wheel is in motion With adjustment of right sector loosened correct scale reading for worm shaft and left sector after adjustment is 2 to 3 pounds When all of the backlash of LEFT sector can not be corrected by foregoing adjustment any remaining free motion is probably due to excessive worm shaft bearing clearance If that condition exists rotate both sector housings opposite the directions given for backlash adjustment to relieve load on worm shaft and adjust worm shaft bearing clearance as outlined in next paragraph WORM SHAFT BEARING ADJUSTMENT With both drag links disconnected from sector shaft Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 arms and with both sector adjustments loosened check worm shaft bearing adjustment by pulling up and pushing down on steering wheel If looseness is present adjust bearings to a slight pre load by removing a shim or shims from top face of gear housing after first removing steering gear cover and tube assembly Fig F010 To clear gear assembly for removal it will be necessary to remove hood battery and instrument panel Bearing adjustment is correct when pull required to rotate steering wheel through cen
53. fer to paragraph 114 112 IMPLEMENT WILL NOT LIFT If with pump drive engaged and engine running the implement will not lift look for a stuck control valve b cracked cylinder c leaking high pressure tube connecting pump to cylinder in lift cover d pump check valve not functioning e relief valve not seating and or f defective pump To check for any of the preceding F088 Model 8N lift housing cover conditions first remove inspection unit as viewed from the lower side cover from either side of the rear axle center housing and make certain that the control valve moves freely 46 Lift ram arm when actuated by hand With pump 50 Ram cylinder running there should be no visible oil spray in the compartment and no turbulence of the oil adjacent to the pump unit The existence of either 57 Touch control lever condition indicates leakage the 101 Spring location of which can be traced by visual inspection CB Ram cylinder attaching bolts 55 Friction plate amp disc 56 Quadrant Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 112A ERRATIC LIFTING Possible causes FARMFOO COM are one or more inlet or outlet valves stuck in valve chambers on side of pump or excessive friction in movement of lift arms due to over tightening on shafts 42 112B ERRATIC DEPTH CONTROL If the tillage implement alternates between
54. g 97 Clevis pin 12 Gasket 29 Intake control valve Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Or FARMFOO COM Fig F094 Partial view of hydraulic pump and valves unit used on model 8N poe SH tractors Omitted are the pump driving Fig F093 Model 8N hydraulic pump cam and the valve chambers with their assembly showing the intake control inlet and outlet valves Refer to Fig valve 29 safety relief valve and F092 for legend check valve unit 30 and rocker lever 38 for actuation of the control valves The exhaust control valve is shown at 34 Valve chamber covers C are also the pump cylinders PUMP OVERHAUL MODEL 8N 116 DISASSEMBLE AND OVERHAUL Procedure for disassembling the pump is self evident after examining the actual unit and by referring to Fig F092 When removing the rocker lever 38 hold the control valve 29 in position with one hand to avoid the control valve flying Order of disassembly is relief valve 30 valve rocker lever 38 intake control valve 29 exhaust control valve 34 both valve chambers C cam 15 and piston 17 assembly PTO shaft bushing 18 and disassemble the valve chambers C Throughly wash all parts in an approved solvent being sure to remove all gum carbon or varnish from the surfaces Renew any worn corroded or scratched parts and check and service the valves and bushings in the p
55. h other Pistons and cylinders are the same as used in 8N tractors ae a TH a Ae i at 4 a a a fa x Fig F096 Improper seating of the check valve portion of relief valve unit may be corrected using a reseating tool as shown Fig FO97 Hydraulic pump inlet and outlet valve seats in pump valve chamber can be reseated as shown Connect Report Errors jcchapster gmail com
56. he lift cover assembly in a vise with control spring up as shown in Fig F081 Disengage the position control lever 62 by moving it to the forward down position Measure the length of the constant draft control spring 78 which should be 3 9 16 plus or minus 1 64 inch If spring is not within these limits adjust to 3 9 16 by means of adjusting nut 81 104 POSITION CONTROL SPRING To adjust the position control spring mount lift cover assembly n a vise as shown in Fig F082 and engage the position control Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 lever 62 by moving it to the UP position Move the touch control lever down until there is a gap D of inch between edge of lever and top of slot as shown Raise the lift arms to their top operating position as indicated by marks R being in register Make sure that the control arm 84 moves freely Move position control spring linkage up until pin 71 is in contact with face of cam on lift ram arm Raise the control arm 84 until swivel 80 comes into contact with the flanged shoulder on bushing 79 of the constant draft control spring With parts held in this position loosen the locking nut 68 and turn the control rod 77 located inside spring 76 until the bolt contacts the pad LP on the control arm 84 Recheck the position of touch control lever and lift arms to be sure they were not moved during the adjustment then
57. he unit from the tractor as per paragraph 11 Procedure for disassembly is self evident Any derangement or wear in any of the components shaft and ball nut assembly 5 Fig F012 is corrected by renewal of the assembly as the individual parts are not catalogued Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Select and insert shims 9 Fig F012 between underside of inner head of lash adjuster screws 2 and slot in sectors to provide zero to 002 end play of adjuster screws in sectors Shims 9 are available in thicknesses of 063 065 067 and 069 TOE IN ADJUSTMENT 15 Toe in is adjusted by varying the length of the drag links Models 2N 9N drag link is adjusted by disconnecting link front end loosening lock clamp and screwing link end in or out as required Model 8N drag links are provided with turn buckle type adjustment and do not require disconnection The wheels may be aligned approximately by adjusting drag links until spindle arms are centered over the radius rod to axle member bolts or the reference marks Correct toe in is to 1 4 inch FARMFOO COM FIG FO12A Cutaway of latest version of ball nut steering gear used on 8N tractors after serial 216988 The filler plug may be differently located on some 8N tractors in this serial range Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 1
58. if x 003 feeler on aluminum 004 on c steel Requires Less Than 5 lbs Pull 33 Iron sleeves can be used for servicing an engine originally equipped with steel sleeves When making this conversion observe the following First measure the outside diameter of the iron sleeve diameter of sleeve shoulder and height of sleeve shoulder Then adjust the boring equipment to provide the iron sleeve with a 001 press interference fit in block bore Adjust the counter boring equipment to provide the sleeve shoulder with a 001 003 standout above top surface of cylinder block and a 03 006 side clearance of sleeve shoulder in block Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 counter bore It is suggested that 060 on the diameter be removed for the first rough cut and approximately 35 for the second rough cut The finish cut should be made to provide the sleeve with a 001 press fit After installing the iron sleeve use a suitable hone to final size the sleeve to correct distortion and also to provide the correct piston skirt clearance as listed in paragraph 32A 33A FINAL SIZING OF SLEEVES Use a rigid type hone and No 220 grit stones A drill with a speed of 250 to 450 rpm should be used to drive the hone The stones must be used dry to obtain the desired cylinder sleeve finish Cover the crankshaft with clean rags NOTE The speed of the hone and rapidity of the stroke govern
59. ift arms secured in the full lowered position or weighted to prevent lifting move the touch control lever to the top position on the quadrant The relief valve should open at a gauge pressure of not less than 1600 psi If the pump does not deliver the expected minimum pressure of 1600 pounds per square inch check for a faulty safety relief valve 30 To check for this condition remove either inspection cover from sides of rear axle center housing With the pump running there should be no visible oil turbulence in the vicinity of the safety valve If turbulence is present remove the relief safety valve and install a new one If the safety valve is considered to be in operating condition by the preceding check and the expected pressure is not obtained the pump cylinder and or high pressure oil tube is at fault A visible oil spray in the pump compartment of the rear axle center housing indicates leakage the location of which can usually be traced by visual inspection If no oil Mn MM sri Sen spray is evident a further check Fig FO91 Model 8N lift cover showing involving removal of the pump will be first step in reassembly procedure necessary Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 FARMFOO COM 1 7 Fig F092 Model 8N hydraulic lift pump unit 115 R amp R PUMP FROM TRACTOR To remove the pump first drain the rear axle center housing and the pump
60. ing gear in same manner as battery ignition distributor Remove adapter and proceed to disassemble using care to mark gears and couplings to assure proper reassembly Renew excessively worn parts reassemble install and re time ignition as previously described Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 CLUTCH FARMFOO COM l LEVER FOR DISENGAGING ADJUSTMENT ea 63 Free travel of models M FREE PEDAL TRAVEL BEFORE 2N 9N clutch pedal should be YOKE CONTACTS CLUTCH RELEASE 3 16 inch and for model 8N BEARING atri 3 4 inch To adjust pedal 1 ADDITIONAL TRAVEL PAWL clearance on models 2N 9N BEFORE CLUTCH PEDAL remove clutch rod clevis pin CONTACTS BRAKE SHAFT i A ARM DERE as shown in Fig F048 and ali ee a 2 screw clevis pin in or out as ee a required and reconnect Early Sol ZN AL model 8N tractors have an EN adjustment screw which is Re a T d hich 2 lt A if part of clutch pedal as shown gt ur in Fig F049 Later 8N I Ze tractors have a rod linkage 72 02 hr system with a clevis i O adjustment SI gt Fig F048 Clutch pedal adjustment on models 2N 9N FARMFOO COM REMOVE AND REINSTALL Models 2N 9N 64 Remove hood and block up tractor under transmission case Support rear end of engine on a wheeled jack Disconnect both rad
61. iston head nearest the timing gear end of the engine PISTON PINS 35 The 750 floating piston pin is retained by spring steel lock rings which should be renewed if they are removed for any reason New piston pins are available in Standard size only Pins for aluminum pistons are 2 844 long and are painted pink for identification Pins for cast steel pistons are 2 972 long and are painted green for identification With both piston and pin clean and at the same temperature the pin should be a thumb push fit in piston pin bores Pin fit in rod bushing is correct if pin drops slowly through bushings of its own weight CONNECTING RODS AND BEARINGS 36 Connecting rod bearings are slip in precision shell type held in position by lock tabs which fit into cutouts in connecting rod and cap bore Bearing wear is corrected by installing new bearing shells which are made to close tolerances and do not require final sizing New inserts are available in Standard 001 002 005 07 010 012 and 020 undersize Connecting rods and bearings are the same for all cylinders Piston pin bushing in connecting rod is available in 729 Inside Diameter Bushing oil holes located by holes in connecting rod are drilled after bushing is installed Rods may be installed with oil squirt hole facing forward or backward Crankpin Diameter mean 2 094 Running Clearance 00089 0025 Renew if Clearance Exceeds 005 Side Clearance 004 Q11 Bolt Torque ft
62. ius rods and drag links at rear ends Disconnect battery starter generator and ignition wires or cables Disconnect throttle and choke controls oil pressure gauge line at cylinder block air inlet Fig F050 Front assembly separated from tube at carburetor and transmission on models 2N 8N 9N Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 exhaust pipe at manifold Remove bolts holding transmission case to engine and separate engine and transmission as shown in Fig F050 64A With clutch assembly accessible mark clutch cover and flywheel to assure correct alignment when reinstalling Force clutch release levers inward and insert wooden wedges between levers and cover as shown in Fig F051 Unscrew cap screws holding clutch assembly to flywheel and remove clutch cover and lined disc A short Be dummy clutch shaft or aligning Fig F049 Clutch pedal adjustment on model 8N tool is used as shown when reinstalling clutch Renew release and pilot bearings if necessary Install thick side of driven disc hub away from flywheel When clutch cover is overhauled reset release levers to the dimensions given in the Long clutch table in Standard Units manual Model 8N 65 Block up tractor under transmission case and support rear end of engine on a wheeled jack Remove storage battery Disconnect throttle linkage starter wire at foot button air inlet tube at carburetor and oi
63. l pressure gauge line at cylinder block Remove cap screws holding steering gear housing raise gear housing slightly to clear transmission and block up between gear housing and flywheel housing Disconnect radius rods at rear ends and remove bolts holding engine and transmission case together Separate engine and transmission 66 With clutch assembly accessible mark clutch cover and flywheel to assure correct balance when reinstalling Force clutch release levers inward and insert wooden wedges between levers and cover as show in Fig F051 Unscrew cap screws holding Wooden Wedges clutch to flywheel and remove clutch cover and lined plate Renew release and pilot FARMFOO COM Clutch Pilot Tooi 7550 A Fig FO51 Using wooden wedges and En shaft to a as Be Before facilitate R amp R of clutch Clutch installation on reinstariine Chuten ta models 2N 8N 9N flywheel lubricate pilot Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 bearing with short fiber high melting point type grease A short dummy clutch shaft or aligning tool is used as shown when reinstalling clutch Install thick side of lined plate hub away from flywheel When clutch cover is overhauled check lever settings as for Long 9C clutches as outlined in Standard Units Manual For renewal of clutch shaft refer to main Drive Gear in Transmission section Connect Report Errors jcchapster gmail com FO 4 I am
64. lbs 35 40 CRANKSHAFT AND BEARINGS 37 The crankshaft is supported by three bearings of the non adjustable slip in precision shell type Bearing wear is corrected by installing new bearing shells without removing crankshaft Bearing inserts are available in Standard 001 002 005 007 010 12 and 020 undersize and do not require final sizing If crankshaft journals or crankpins are out of round more than 0015 or tapered more than 001 the shaft should be reconditioned or renewed If journals are work evenly and not out of round or tapered more than mentioned undersize bearings may be installed providing main or rod bearing clearance does not exceed 005 Crankshaft end play is controlled by side flanges on center main bearing On early Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 production engines the main bearing caps were held in place by studs and nuts laster production engines use cap screws which can be substituted for studs on engines not so equipped Main Journal Diameter 2 2485 Running Clearance 00085 0025 End Play 002 006 Crankpin Diameter 2 094 Mains Nuts or Screws Torque Ft Lbs 75 85 CRANKSHAFT OIL SEALS 38 Front and rear crankshaft oil seals are two piece moulded packing ring type Renewal of upper halves requires removal of crankshaft Front and real lower seals are mounted in oil pan and may be lifted out when pan is off Soak new
65. n rings 75 Drawbar control cam 50 Ram cylinder 76 Position drawbar control spring 59 Lift shaft arm 77 Position drawbar control rod 60 Bushing 78 Draft control spring 63 Drawbar control arm 79 Bushing 64 Washer 80 Draft control swivel 65 Drawbar control link 82 Washer 66 Clevis pin 84 Lift control arm lever 67 Washer 85 Dowel pin 69 Plate for drawbar control cam 89 Washer Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 110 DISASSEMBLE AND OVERHAUL Procedure for disassembly of the lift cover assembly is self evident by an examination of the unit and reference to Figs F086 F087 F088 F089 FO9 and F091 The general order of disassembly is the ram cylinder 50 piston connecting rod 47 touch control lever 57 linkage for constant draft control rod 73 position control lever and linkage quadrant control arm lift arms 59 lift arms shaft 45 and bushings 60 110A Clean and inspect all of the parts as outlined in paragraph 107 110B Reassemble the unit by reversing the disassembly procedure When installing the quadrant assembly align the marks on the latter with those on the lift cover casting After unit is assembled and before installing same to tractor adjust the constant draft spring and the position control spring as outlined in paragraphs 103 and 104 TROUBLESHOOTING For pump testing procedure re
66. nd condenser Repair or renew parts where necessary an reassemble unit Adjust breaker contact gap to 14 016 and lubricate breaker point cam sparingly See Fig F044 To set basic timing before reinstalling distributor unit place a steel scale against shaft tang on wide side of shaft and rotate shaft until scale edge is 1 4 inch from top side of small mounting hole as shown in Fig F045 When shaft is in that position breaker contacts should start to open Move timing plate and screw until contacts open properly Install distributor on engine aligning offset tang and slot assemble coil and cap and reconnect wiring Model 8N Late Angle Drive Distributor 58 After tractor serial 263843 model 8N tractors are equipped with angle mounted Ford distributor a ay 8N12127A or B Refer to Fig F046 The Fal unit is driven by a replaceable gear Fig F046 Angle mounted distributor used on the front end of the camshaft and on 8N tractors after serial 263843 is mounted on top of the timing gear cover Spark timing at speeds above 400 rpm is controlled by a centrifugal governor built into the distributor Recommended contact gap is 25 Breaker arm spring tension should be 17 28 ounces Governor advance curve is tabulated below Engine RPM 1200 2000 Advance Crankshaft degrees 9 11 16 18 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 For distributor degrees and rpm use
67. nd the position control lever 62 smaller lever to the disengaged down position Place the lift arms in the down position Remove approximately 14 cap screws retaining lift cover to axle center housing and carefully lift the unit off the tractor After installing cover adjust the quadrant and main control spring as outline in paragraphs 10 and 101 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 FARMFOO COM Fig F084 Phantom view of hydraulic system lift cover and pump as used on models 2N and 9N M Fork retracting spring 50 Ram cylinder 10 Pump relief valve 52 Lift cover 11 Control valve 53 Lift control lever fork 19 Pump unit 54 Control lever shaft 41 Yoke for main control spring 56 Quadrant 42 Main control spring 57 Touch control lever 46 Lift ram arm 59 Lift shaft arm 47 Connecting rod for ram piston 105 Leveling box 48 Ram piston 106 Lift rocker Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 FARMFOO COM Fig F085 Exploded view 2N 9N hydraulic lift cover assembly 41 Control spring yoke 52 Lift cover 42 Main control spring 53 Lift control lever fork 43 Plunger guide 54 Control lever shaft 44 Main control spring plunger 55 Friction plate amp disc 45 Lift shaft 56 Quadrant
68. nect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 WHEEL AUGIINIENT MARES fetes FRONT AXLE BUCKLE OCK NUT LOCK NUT TURN BUCKLE LOCK NUT 1 The front axle is constructed in three sections and may be adjusted to vary tread width See Figs F01 and FO2 Steering linkage must be readjusted on model 8N when tread width is changed Model 2N 9N wheel alignment is not affected by tread width Fig F01 Front axle as used on model 8N adjustment Note hole spacing of tread adjusting bolts SPINDLE BUSHINGS 2 To rebush axle spindles first block up tractor front end and remove steering arms Slide spindles with wheels attached out of axle ends Drive old bushings out of axle and install new bushings using a piloted installing tool New steel bushings are presized and are not reamed Check and adjust wheel alignment after reinstallation of axle parts removed See Fig F03 Fig F02 Front axle on models 2N and 9N Eu l KING PIN N and spindle on models l FARMFOO COM JACK Fig F03 Front axle hub 2N 8N 9N Fig F04 Method of removing axle center pin Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 AXLE PIN BUSHINGS 3 Remove front hood bolts at bottom and block up under hood Hold up front end of engine with jack under oil pan and unbolt axle support Remove two bottom radiator
69. ng out 12 Shims 31 PTO hub 13 Bearing retainer 32 Bearing support KANEN arn Or an PAETE ane 14 1 amp 3 fork 33 PTO shifter rail reinstall The square cornered slots in lower rails for shift 23 Shims plates must face inward 78 MAINSHAFT After transmission is removed as outlined in paragraphs 70 and 70A and top shifter rail and fork are out proceed as follows Remove mainshaft rear bearing retainer 9 Fig F057 and shims Remove clutch shaft main drive gear and retainer R as a unit Remove the reverse idler shaft shift rail allowing fork to Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 remain in housing Lift out the mainshaft and gear cluster as a unit Renew worn or damaged parts and reinstall shaft and gears assembling in order shown in Fig F059 Move shifter forks to neutral position and check mainshaft bearing adjustment 78A To test bearing adjustment rotate mainshaft rear or output end with transmission in neutral and measure turning torque If torque is 20 to 35 inch pounds measured with shaft in motion bearing adjustment is correct Vary the number of shims S under rear bearing retainer if adjustment is necessary Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 FARMFOO
70. ng Paragraph MODELS 2N 9N 8N BELT PULLEY 97 97A 97 97A FINAL DRIVE Bevel Gears 86 87 86 87 BRAKES Differential Overhaul 85 85 Adjustment 91 92 Differential R amp R 84 84 R amp R and Overhaul 93 94 Wheel Axle Shaft Bearings Adjust 88 88A 88 88A CARBURETOR 2 ee Wheel Axle Shaft Bearings Renew 89 90 CLUTCH Wheel Axle Shaft R amp R 89 90 Overhaul 64A 66 Pedal Adjustment 63 63 FRONT SYSTEM Remove amp Reinstall 64 64A 65 66 Axle Main Member 1 1 Axle Pivot Pin amp Bushing 3 3 COOLING SYSTEM Steering Gear Adjust 6 7 12 Pump R amp R 46 46 Steering Gear Overhaul 6B 11 14 Pump Overhaul 47 48 Steering Gear R amp R 6A 11 Thermostat 49 49 Steering Spindles 2 2 DIFFERENTIAL GOVERNOR Overhaul 85 85 Adjustment 44 44 Remove amp Reinstall 84 84 Overhaul 45 45 ELECTRICAL HYDRAULIC SYSTEM Ignition 54 61 54 58 Adjustment 99 101 Generator 50 50 Lift Cover 105 109 Generator Regulator 51 52 51 52 Pump Overhaul 124 116 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 MODELS 2N 9N 8N Starting Motor amp Switch 153 53 Pump R amp R 115 115 Pump Test 114 114 ENGINE Trouble Shooting 112 112 Assembly R amp R 20 20 Work Cylinder 106 106 Cam Followers 26 26 Camshaft 29 29 IGNITION SYSTEM Connecting Rods amp Brgs 36 36 Battery Ignition 54 57 54 60 Crankshaft amp Be
71. ng stem until rear wheel again turns freely Adjust both brakes equally Model 8N 92 Jack up rear wheels remove adjusting screw cover and turn notched adjuster screw counter clockwise until wheel no longer can be turned by hand See Fig F073 Then back off adjuster until only a slight drag is felt Adjust left brake clevis to equalize brake pedals R amp R SHOES Models 2N 9N 93 Jack up rear end of tractor and remove rear wheels Remove bearing retainer stud nuts and pull brake assembly and axle shaft out of axle housing Lift brake backing plate off bearing retainer studs and remove brake shoe retracting springs and shoes Reinstall brakes and adjust as described in paragraph 91 Refer to Fig F069 Model 8N 94 Jack up rear end of tractor and remove rear wheels Remove four brake drum screws and pull drum off shaft Fig F071 Remove brake shoe retracting springs and shoes Reinstall brakes noting that two brake shoe retracting springs are used on left brake and only one on right brake Fig FO71 Model 8N brake and rear wheel hub Hub is splined to wheel axle shaft Fig FO72 Brake adjuster stem on models 2N 9N Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 ACK PLATE Fig F073 Clearance adjuster Bendix brake on model 8N Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 POWER TAKE OFF UNIT
72. of engine NOTE Pistons must be removed used in models 2N 8N 9N carefully to prevent breaking ring groove lands when passing ridge which may be present at top of cylinder PISTON RINGS 31 Two compression rings and one oil control ring are used on each piston Ring gap should measure 010 to 17 Top compression ring side clearance should be within the limits 0015 003 second ring clearance should be within limits 001 0025 New rings are marked to indicate top side and are installed accordingly Counterbore must be up on top ring Second ring is provided with an expander SLEEVES amp PISTONS Hardened steel sleeves were used in production up to tractor serial 8N 433578 iron sleeves in later production tractors Engines with iron sleeves can be identified externally by the diamond before and after the serial number which replaces the star used on engines with steel sleeves The outside diameter of iron sleeves in approximately 098 larger than steel sleeves hence the diameter of the bores in the cylinder block equipped with iron sleeves is about 098 larger than the block bore of engines equipped with steel sleeves Iron sleeves are also flanged at the top Installation of iron sleeves in a block originally equipped with steel sleeves necessitates the reboring and counter boring of the cylinder block as outlined in paragraph 33 Bare pistons are not catalogued but pistons with fitted pins and pin retainers are furnished stan
73. of the seat surface in the pump base Seat can be recut by using special Ford reseating tool or equivalent as shown in Fig F096 Leakage signs on valve can be corrected by renewal of valve followed by light lapping if necessary The safety valve portion of the assembly indicated by the spring RV ball and cotter pin is factory adjusted to unseat at a minimum pressure of 1600 psi if any parts of this valve are worn or broken or show leakage install a new valve unit 127 INLET AND OUTLET VALVES Inlet and outlet valves 5 and 7 Fig F095 are identical to the similar parts used in the 8N tractors Valves can be reseated by using special Ford reseater as shown in Fig F097 and the valves can be refaced Be sure guides and sockets 8 and 9 are aligned to give concentric seating and that they are in good mechanical condition 128 PTO SHAFT BUSHING Bushing 18 Fig F095 is identical with bushing used in Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 model 8N tractors and is serviced in the same manner as outlined in paragraph 121 129 SCOTCH YOKES amp CYLINDERS The Scotch yokes 17 Fig F095 which form the pistons and the large bores in the chamber covers C which form the cylinders should be inspected for wear scratching etc Correct any non standard condition by renewing the parts When assembling yokes pistons to pump position them so that the piston portions are closest to eac
74. p T Remastered Ver 1 2 05 24 2015 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 TRANSMISSION REMOVAL 70 Drain transmission and remove power take off shaft Split front section of tractor as outlined in paragraphs 64 or 65 70A Remove power take off control from left side of rear center housing Block up rear section of tractor and unbolt rear section from transmission Separate transmission and rear section as shown in Fig F053 and remove transmission unit eee FARMFOO COM Fig F053 Rear assembly separated from transmission on models 2N 8N 9N OVERHAUL Models 2N 9N 3 Speed 71 SHIFTER RAILS AND FORKS Rails and forks may be removed without performing a front section split after steering gear is off and rear section is separated from transmission case as outlined in paragraph 70A Remove gear shifter rail lock plate 10 Fig F052 Pull shifter rails 11 out rearward and remove forks 13 amp 14 being careful not to lose detent balls and springs 12 amp 15 Renew worn or damaged parts and reinstall in reverse order of disassembly 72 MAINSHAFT After transmission is removed from tractor as outlined in paragraphs 70 and 70A and shifter rails and forks are out proceed as follows Remove bearing retainer 13 Fig F054 or FO56 and shims 12 Move mainshaft toward rear and remove pilot bearing cone 6 using a suitable puller Pull mainshaft out toward
75. point A just as the touch control lever reaches its full UP position on the quadrant 101A If valve lever does NOT first contact the pump housing simultaneously with the touch control lever arriving at the full UP position loosen the cap screws Q Fig FO78 in the quadrant support plate and move the quadrant forward or backward as required Top face of quadrant support plate should be parallel with top of the attaching plate on the lift cover after adjustment is completed If touch control lever will not remain in any set position tighten the castellated nut at external end of touch control lever shaft Recommended frictional drag is when a 4 5 pound pull at end of lever is required to move the lever WOD OOAW YS 102 CONTROL SPRING Check and adjust implement control spring in same manner as for models 2N and 9N as per paragraph 100 Fig FO81A Closeup of contre springs and portion of linkage contained in hydraulic lift cover on model 8N tractors 46 Cam Adjustments described in paragraphs 69 Cam plate 103 and 104 can be made only when the 71 Pin for position drawbar control arm lift cover assembly is off the 75 Position drawbar control cam tractor The need for these 77 Position drawbar control adjustments is when the lift cover assembly has been overhauled or when mechanical tampering has occurred 103 CONSTANT DRAFT SPRING To adjust constant draft spring mount t
76. rear and remove sliding gears 7 amp 9 Renew worn or damaged parts and reassemble as shown NOTE If mainshaft sliding gears and rear bearing assembly only are to be removed and reinstalled it will not be necessary to perform the front section split as required for complete transmission removal Mainshaft and gears may be removed after shifter rods forks are out 73 Install mainshaft and adjust bearings by varying the number of shims under rear bearing retainer When bearings are correctly adjusted and sliding gears are in neutral position 15 to 3 inch pounds torque will be required to turn mainshaft Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 at rear or output end The torque test is made with bearings dry and is measured after shaft has started to turn The test torque is not intended to cover torque necessary to stat shaft rotating from a stationary position Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 a de tn AL Ws rn tfi Hiili if iL WII m Bill Fig F052 Gear shifter mechanism on models 2N 9N Detailed changes were made Fig F054 Transmission sectional view in the design beginning with tractor on models 2N 9N serial 12500 5 Main drive gear 9 12 amp reverse gear 1 Starter switch
77. rts or insert a 1 2 x 2 7 8 inch shim as shown in Fig F035 Check governor shaft bushing for wear and if necessary renew bushing using suitable removing and reinstalling tools as shown in Fig F038 CAUTION Make sure that thrust washer shown in Fig F032 is in place before installing bushing Check governor arm adjustment using Governor Setting Gauge as shown in Fig F036 Clamp housing in gauge as shown and hold governor outer lever in wide open position Insert Go No Go gauge as shown and if only first step of gauge can be inserted clearance is satisfactory If not correct unclamp housing lay governor arm across flats on fixture and strike governor arm lightly as shown in Fig F037 Reclamp governor and again check clearance after bending arm Reassemble governor and install on engine BALL BEARING BASE ISIYI STEEL BALLS 358085 DRIVE SHAFT UPPER RACE 18188 18187 THRUST BEARING 18192 SHIM 18241 ee ie iy MY FORK BASE 18194 WASHER 356430 S ROLE _ BUSHING 18184 _ LOWER RACE AND BEARING ASSEMBLY 18186 THRUST WASHER 356491 S Fig F032 Exploded view of engine speed governor used on models 2N 8N 9N FARMFOO COM Fig F033 Measuring clearance between washer and governor fork using Ford gauge ELO7691 I er Y Fig F035 Installing governor arm shim on models 2N 8N 9N Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015
78. s with generator at normal Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 operating temperature and generator current of 5 amperes With generator current of 20 amperes the voltage should not exceed 6 8 volts i bi FARMFOO COM Fig F043 Electrical system on 8N prior to tractor serial 263884 Ignition resister to ignition coil COLOR CODE amp WIRE GAUGE Generator ground to regulator Red No 16 Starter relay to starter button Black with red tracer No 16 Generator field to regulator Red with blue tracer No 18 Generator armature to regulator Black with white tracer No 16 Regulator to terminal block Yellow with black tracer No 12 Resistance block to starter relay Yellow No 12 Terminal block to ignition switch Yellow No 12 loo INI aA an PP w m Ignition switch to resistor Yellow No 16 O Io INIIAI AIIN Red with green tracer No 16 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 STARTER MOTOR amp SWITCH 53 Ford 6 volt starter and Bendix drive assembly 8N11001 replaces the 9N1101 9N1102 and 8N1102 assemblies used prior to 1958 production The 8N11001 starter should have a current draw of 46 58 amperes 5 volts running at no load or 100 150 amperes when cranking a warm engine Starter switch on
79. seals in oil for 2 hours before installation FLYWHEEL 39 Flywheel may be removed after clutch is out using a suitable puller or by tapping with a soft face hammer Two dowels are installed in crankshaft flange to located the flywheel Flywheel runout should not exceed 005 and is checked at rear face of flywheel 1 4 inch in from the beveled edge The ring gear may be renewed by the conventional heating and expansion method after flywheel is off The clutch friction surface of flywheel may be resurfaced if it is scored or grooved providing the thickness of flywheel measured between friction surface and mounting flange surface is not reduced to less than 855 Tighten flywheel self locking cap screws to 75 80 foot pounds FLYWHEEL TIMING MARKS 39A Flywheels as installed in production models 8N prior 263844 2N and 9N engines are not marked to indicate piston position Model 8N tractors after 263843 with angle drive distributor are equipped with flywheels which are stamped with a QO mark indicating top center position and with additional stamped lines from one to 20 degrees These marks appear in two places on the flywheel 180 degrees apart OIL PAN 40 The cast iron oil pan also forms part of the tractor frame to which the front axle support is bolted The oil pump screen is a part of the oil pan drain plug and may be cleaned after plug is removed Connect Report Errors jcchapster gmail com FO 4 I amp T Remas
80. ssembly Renew worn or damaged parts and reassemble as shown Reinstall countershaft and adjust bearings by means of shims 23 Fig F056 to obtain zero end play or 15 3 inch pounds torque to rotate shaft Countershaft may be turned for checking bearings by inserting PTO shaft in shifter unit and rotating the unit 76 REVERSE IDLER GEAR May be removed after countershaft is out Unscrew idler shaft lockpin 26 Fig F055 located on outer left side of transmission housing and remove idler shaft and gear 27 amp 25 Rebush gear or renew gear and shaft and reinstall with beveled gear face toward rear of transmission Model 8N 4 Speed 77 SHIFTER RAILS AND FORKS Rails and forks may be removed without performing a front section split after transmission cover and gear shift lever assembly are off and rear section is separated from transmission case as outlined in paragraph 70A Lift out top shifter rail spring and detent ball 7 Fig F057 back off shifter fork lock screw 27 and remove shifter rail and fork Remove shift plate pivot screws 13 from both Fig F056 Rear end view of 2N 9N transmission sides of transmission housing showing bearing support and PTO shifter detached and remove shift plates Remove from end wall both lower shift rails and forks through top opening after 10 Shift rail lock plate 29 2 amp reverse fork detent springs and balls are 11 Shifter rails 30 Detent ball amp spri
81. ter or straight forward position is 1 1 2 pounds with drag links disconnected and sector mesh adjustments loosened Measure pull with a spring scale hooked to rim of wheel and take the reading while wheel is in motion SIEERING SHAFT After completing worm shaft bearing adjustment readjust backlash of both sectors as outlined in paragraphs 7 and 8 11 OVERHAUL Hood battery and instrument panel must be removed before steering gear unit can be removed After unit is cleared for removal disconnect both drag links at steering gear arms unbolt steering gear unit from Fig FO9 It is possible to transmission housing and lift unit off of disassemble the screw shaft and tractor ball nut assembly used in model 8N tractors but such procedure 11A Pull both steering gear arms off sector is not recommended Refer to shafts and unscrew cap screws holding sector text shaft housings to gear case Remove both sector gears and covers from sides of gear case Fig F08 To facilitate removal of these sub assemblies turn them clockwise and they are withdrawn Remove shaft tube flange cap screws and lift assembly off of gear case CAUTION Do not turn worm shaft if nut is near either end of worm as ball retainers may be damaged New sector shaft housing inner bushings are pressed into housing 1 8 inch below face of hub Outer bushings are installed flush or slightly below bottom of dust seal counterbores Bushings should be align reamed to
82. tered Ver 1 2 05 24 2015 The oil pan is removed by supporting engine with a chain hoist or by blocking up under transmission housing and removing pan bolts It will be necessary to also unbolt axle support disconnect radius rods and move front end assembly forward to clear the pan Crankshaft front and rear lower oil seals are carried in grooves in oil pan OIL PUMP wer 41 Oil pump body is part of front main bearing cap and can be removed after oil pan is off Pump is gear type and is driven by crankshaft timing gear Fig F025 Pump pressure ie Sate is regulated by a spring loaded DRIVEN GEsR ERTA plunger type by pass valve TRIERER DR located on top left side of te 1 gear cover as shown in Fig FO26 BOOY ASSEMBLY ers DRIVE GEAR ASSEMBLY TENA PE EEEE of engine oil pump If driven gears in pump body used on m dels ON BN ON are worn pitted or chipped they should be discarded Zu AA PLUNGER 6663 GASKET 6559 Recommended running clearance Tz Kat of gear shaft in bushing is wi a SE ey Ott RELIEF VALVE j R V 0005 0015 Discard fiber Aa i NUT 6666 drive gear and shaft assembly A SPRING 6654 if gear teeth are worn or damaged or if shaft journal surface is roughened or worn to less than 560 diameter The drive gear shaft bushing should be renewed if worn to larger than 566 diameter New bushing should be sized after installation to 5625 563 to provide desired 0005 0015 FARM
83. tery and instrument panel When housing is off invert same in a vise and place both sectors 15 amp 26 in position meshed with steering shaft pinion 14 Check gear mesh and backlash with sectors held in normal operating position Thrust washers 25 amp 27 which are available in three sizes thick medium and 70USing removed thin should be installed according to requirements for minimum sector end play and backlash Reinstall assembly after adjustment is complete and synchronize gears a Fig FO5 Models 2N 9N steering gear with upper Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 es Fig FO6 Models 2N 9N steering gear unit with attached instrument panel When early model 9N steering gear is turned to either extreme severe steering conditions may cause sectors to jump out of mesh and result in an uneven turning radius To synchronize sectors without removing steering housing disconnect both drag links at steering arms an move left arm rearward as far as possible and right arm in opposite direction to un mesh gears Re engage both sectors with steering shaft pinion and check synchronism by observing whether steering arms are parallel and point slightly rearward when gear is in mid or straight ahead position Reconnect drag links and adjust same if necessary 6B OVERHAUL To completely overhaul the steering gear it is necessary to first remove
84. the pulley shaft is in the case the correct preload is when 12 to 20 inch pounds is required to rotate the shaft in its bearings Adjust the drive shaft bearings to a slight preload by varying the number of gaskets interposed between cover 13 and housing 7 Correct preload is when 20 to 30 inch pounds is required to rotate the belt pulley when the unit is completely assembled Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 HYDRAULIC LIFT SYSTEM Although all of the Ford models utilize main assemblies of basically similar appearance they hydraulic system as used on the 2N and 9N performs differently and has different adjustments than the system used on the 8N Main differences are in the valving which in the 2N and 9N provides automatic draft control whereas on the 8N the system has automatic draft control and automatic implement position also called automatic follow up control Each system is easily identified by the appearance of the lift cover assembly which if it is for an 8N tractor has a position control lever 62 Fig FO78 and a touch control lever 57 whereas for the 2N and 9N the cover has only the touch control lever as shown at 57 in Fig F084 ADJUSTMENTS Models 2N 9N 99 QUADRANT To check quadrant adjustment place an implement or a weight of 200 3
85. the unit as per paragraph 6A Renew worn parts and install new oil seals Model 8N Prior to 216989 On tractors prior to serial 216989 the sector teeth are straight cut and the left sector viewed from rear of tractor meshes with the rack teeth on the ball nut Refer to Fig F08 The right sector meshes with the left sector and rotates in the opposite direction On tractors after serial 216988 the arrangement is reversed as shown in Fig FO12A the right sector being meshed with the ball nut and because the sector teeth are of the bevel type a different method of backlash adjustment is employed Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 EN Z Fig FO7 Steering gear on models 2N 9N 1 Steering post nuts and lock 11 Upper gear housing 24 Sector bearing 2 Bearing cone 12 Lower post bearing 25 Outer thrust washer 3 Upper post bearing 13 Bearing cone 26 Right sector 4 Bearing cup 14 Shaft and pinion 27 Inner thrust washer 5 Throttle control rod 15 Left sector 28 Sector shaft 6 Quadrant 19 Cap 29 Lower gear housing 7 Spring 20 Spring 30 Expansion plug 8 Spring seat 21 Seal retainer 31 Filler plug 9 Control rod arm 22 Dust seal 10 Bearing cup 23 Packing 7 ADJUSTMENT Before making any adjustments disconnect both drag links at sector shaft arms Turn steering wheel until
86. to tractor serial 263844 56 Recommended static timing is top center which will be automatically obtained regardless of crankshaft position when the distributor is installed to the engine providing that the basic timing of the distributor was correctly set at inch as outlined in the preceding paragraph Recommended running timing full advanced is 24 flywheel degrees before TC when engine is running at 2000 rpm or higher Any changes in the timing to accommodate different fuels are accomplished by changing the basic timing that is by moving the adjustment plate on the left side of the distributor housing 57 DISTRIBUTOR OVERHAUL Disconnect ignition coil primary wire and four spark plug cables at distributor Unsnap coil retainer bail and distributor cap clips and remove coil and cap a SS wi i Remove two cap screws E ARARO TAES E ENN BR holding distributor UNG remo o o feusine to engine and SMALL HOLE NEAREST TIMING PLATE SEITEN remove distributor unit Fig F045 Distributor basic timing adjustment on models 2N 9N and 8N prior to tractor serial 263844 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Loosen condenser lead and mounting screws and remove condenser Pry out snap ring an remove breaker plate after lock screw is removed Check distributor shaft fit in housing and breaker plate bracket check condition of centrifugal advance mechanism breaker contacts a
87. tractors 276115 313112 are equipped with a TSX241A and 8N tractors after 313112 are equipped with a TSX241B The model TSX241B carburetor is currently supplied for servicing all tractor models Only the idle mixture jet and the main needle nozzle of the calibration of models TSX241A and TSX241B are renewable Neither the throttle body or the float chamber portions of the carburetor are available separately Refer to Standard Units manual for calibration data Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 GOVERNOR 43 The governor shown in Fig FO 28 is a variable speed ball type driven by engine timing gears and interconnected with the throttle linkage and carburetor throttle valve Splash lubrication is provided from timing gear case and it is important that the large oil passage opening in governor ball bearing carrier plate to be installed at top or up position to assure proper lubrication Further lubrication is provided by an oil line which connects between rear of governor housing and oil filter as shown in Fig F029 Early model tractors were not Mae fs provided with this oil line but service parts are _ available to permit this approved modernization 44 ADJUSTMENT The governor spring 2 Fig F028 should be a snug bit but should have no end play and no pre loa
88. u ma mm N _ FARMFOO COM ee ie u u 3 u v Fig F057 Transmission side and end views on model 8N tractor 80 COUNTERSHAFT This shaft 11 Fig F057 may be removed after mainshaft is out but before reverse idler gear is removed Remove power take off shifter and bearing support and remove shifter clutch hub from rear end of countershaft Remove countershaft and gear assembly through cover opening in top of transmission housing Renew work or damaged parts and reassemble as shown in Fig F062 Reinstall the assembly and adjust bearings by means of shims 7135 to obtain zero end play or 15 3 inch pounds torque with shaft in motion and mainshaft removed from transmission If tested with mainshaft installed turning torque will be 30 60 inch pounds Shaft should be rotated for checking bearing adjustment by inserting PTO shaft in shifter unit and engaging the jaw clutch Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 Fig F059 Transmission mainshaft and components on model 8N See Legend Fig F059 Legend R Bearing retainer 5 Third gear 29 Bearing cup 34 Thrust washer S Shims 8 First gear 30 Pilot bearing 35 Bearing cup 1 Main drive gear 9 Bearing retainer 31 Thrust washer 36 Bearing cone 2 Fourth gear 10 Mainshaft 32 Coupling 37 Bearing cone 3 Second gear 28 Gasket 33 Connector 38 Oil seal
89. ump as outlined in paragraphs 117 through 122 117 INTAKE CONTROL VALVE Intake control valve 29 Fig F092 is available in 3 Connect Report Errors jcchapster gmail com FO 4 I amp T Remastered Ver 1 2 05 24 2015 diameters to permit obtaining a free but minimum clearance fit of the valve in the bushing 24 When checking the fit valve and the bushing should be coated with hydraulic oil which is the same lubricant used in the transmission Obtain minimum clearance by selection from the available valves Part No Diameter Color 8N698E 5917 5918 White 8N698F 5918 5920 Blue 8N698G 5920 5921 Yellow Valve bushing is available in standard bore size only but can be obtained 010 oversize on the outside diameter Be sure to use latest bushing which has 4 intake holes Bushing should not be sized after installation and should be pressed in flush with the face of the pump base Turn bushing to position where cotter pin hole is approximately horizontal so as to facilitate insertion of the locking cotter pin 118 EXHAUST CONTROL VALVE Exhaust control valve 34 Fig F094 and its bushings B in the pump base should be free of scratches Valve should move freely in bushing but should have minimum clearance when checked with the recommended transmission oil on the valve and bushing Exhaust valve is available in 5 diameters as follows Part No Diameter Color 8N640A2 5917 5918 White 8N640B 5919 5920 Blue 8N640C 5920 592
90. work has been accomplished make sure that guides 8 and sockets 9 are aligned to give concentric seating and that they are in good mechanical condition 121 PTO SHAFT BUSHINGS Busing 18 Fig F094 which supports the PTO shaft should have a running clearance of not less than 0015 and not more than 006 Renew the bushing if scored or if clearance exceeds 006 122 SCOTCH YOKES amp CYLINDERS The Scotch yokes 17 Fig F094 which form the pistons and the large bores in the chamber covers which form the cylinders of the pump should be inspected for scratching wear etc Correction of any non standard condition is by renewing the parts When assembling yokes pistons position them so that the piston portions are closest to each other Models 2N 9N 124 DISASSEMBLE AND OVERHAUL Procedure for disassembling the pump used on models 2N and 9N is self evident after examining the pump and referring to Fig F095 This pump differs from the unit used on the 8N tractors mainly in that it is equipped with a Single control valve 11 instead of an inlet and an exhaust control valve The Single control valve is T shaped and is operated by the control fork whereas on the pumps used on 8N tractors the control valves are operated by gt 1 D 2 3 Tl O ie O 5 NQ 6 O 7 Fig F095 Models 2N and 9N hydraulic pump unit and related parts See Legend below Connect Report Errors jcchapster gmail com

I&T Ford Shop Service Manual - Series 2N 8N 9N

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I&amp;T Ford Shop Service Manual - Series 2N 8N 9N

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I&T Ford Shop Service Manual - Series 2N 8N 9N