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Introduction

1. Nominal Nominal Thread ig Thread ll ae o i Diameter Diameter 5 16 5 3 5 M10X1 0 26 19 3 8 11 5 8 5 M12X1 5 37 27 7 16 16 12 M14X1 5 47 35 1 2 20 15 M16X1 5 58 43 9 16 24 5 18 18 1 5 74 55 5 8 24 5 18 M22X1 5 105 77 11 16 34 25 M27X2 0 179 132 3 4 40 5 30 WIRON M27X2 0 85 63 7 8 54 40 INALUM 11 16 75 55 M33X2 0 326 240 1 3 16 88 65 M42X2 0 347 256 1 1 4 88 65 M48X2 0 441 325 15 16 108 80 1 3 8 108 80 1 5 8 135 100 1 7 8 162 120 2 1 2 312 230 26 Power Take Off Service Manual Twin Disc Incorporated Installation Twin Disc PTO Support Plate Specifications Shim to _ within TER 12 cm 005 Engine Bed L 3 F rame Width 4 3 18 17 0 Figure 12 Support plate dimensions NOTE One possible mounting method provides installation ease Use angle iron to couple the support plate to the engine frame PTO A B Model Bore Bolt Radius Degree Hole Hole Recommended 127 025mm Circle Quantity Diameter Thickness 005 001 IBF318OP 266 7mm 31 43 cm 17 78 45 8 17 46 mm 19 05 mm 10 500 12 375 7 00 8 11 16 3 4 NOTE PTO deflection due to loads imposed by the application should not exceed 25 mm 010 Deflection should be measured at the support plate pil
2. ernennen 9 Replacement PariS ce 10 Preventive Maintenance Troubleshooting 11 BAR 12 Sources of Service Information 13 Warranty P 14 IAE ricino 15 Preliminary Checks a arg 15 Drive King installation siii 18 Ball Type Pilot Bearing Installation 18 Roller Type Pilot Bearing Installation 19 Power Take off Installation to Engine or Driving Member 20 installation TIDS Y X 22 Torque Values for Fasteners 24 Support Plate Informatio M unsere 27 EE 29 Allowable Side 29 31 Clutch Adjustment jossicsecsssctectesacsenssazedadtisaastanscccavsssesssntsensuusisoesanenndaias 32 Driving Plate Replacement ne 33 Field Adjustment Tapered Roller Bearing side load appl 34 Bearing End Play In line applications 35 Alignment U Joint type Installation 36 Setting Up Air Engagement on Twin Disc Power Take Offs 38 BILT LI nein 39 Power Take
3. on same 38291092790 00921902663 SNISNOH 9918 0 X BAAS Jo sva ELM Herma end was pie bad SO OL S299 LINVTVaS Kiddy SSI0H Ni DO Lewis IBF3180P 3 HLONST Aul OF eb IBF3180P 0 X 9918 A Fe 2i PARED Mary DYES Tandag 7 Qa wes cis a EE WIG te NOUS Da SHL UU ANO SWH OL 06 GalvioH NMOHS SY an BE 328 dssezv H ESESEX AL EIE SESECHX ENS vovc2au NVLEZOE 2392 la oben C GNOLLISOd OML SCH DNISDOH ex OY p Vane 13 IMAAT A Sin ATEN SES HALOO Law RES do Hil Herria
4. AAR TRON MOE NS Gh LAVAS OLMO HOVE Quia 63 Power Take off Service Manual Engineering Drawings Twin Disc Incorporated 64 Power Take off Service Manual TWIN DISC INCORPORATED RACINE WISCONSIN 53403 U S A 262 638 4000 262 638 4482 FAX WWW TWINDISC COM
5. Power Take off Model IBF3180P Series Document Number 1015832 Twin Disc Incorporated makes no warranty or guaranty of any kind expressed implied or otherwise with regard to the information contained within this manual Twin Disc Incorporated has developed this manual through research and testing of the information contained therein Twin Disc Incorporated assumes no responsibility for any errors that may appear in this manual and shall not be liable under any circumstances for incidental consequential or punitive damages in connection with or arising out of the use of this manual The information contained within this manual is subject to change without notice Document Number 1015832 Reissued December 2003 Power Take off Service Manual Power Take off Service Manual REVISION AND REISSUE DATA Reissued February 1983 Reissued December 2003 Power Take off Service Manual TWIN DISC INCORPORATED TWIN Disc EXCLUSIVE LIMITED WARRANTY en ar GENERAL UNITS Twin Disc Incorporated warrants all assembled products and parts except component products or parts on which written warranties issued by the respective manufacturers thereof are furnished to the original customer as to which Twin Disc Incorporated makes no warranty and assumes no liability against defective materials or workmanship for a period of twenty four 24 months from the date of original shipment by Twin Disc Incorporated to the
6. 1 Clean the PTO housing flange flywheel housing flange and pilot bearing bore of any debris 2 Make sure the housing flange and flywheel housing flange are free of surface imperfections such as nicks burrs and sharp edges Remove them using fine emery cloth or crocus cloth 3 Install a minimum of 3 guide studs in the flywheel housing located approximately 120 apart Using a suitable hoist position the PTO on the guide studs and slide it against the flywheel housing carefully aligning the pilot bearing with the pilot bearing bore in the flywheel and the teeth of the driving plates 11 with the drive ring 1 A CAUTION Do not force the pto unit onto the engine If any resistance is noted repeat the clutch plate centering procedure to align and center the clutch plates so they mesh properly with the teeth of the driving ring 4 Secure the PTO housing to the flywheel housing with 16 hex head capscrews Torque the capscrews to the proper specifications given in Table 1 Note PTO housing to flywheel housing attachment screws must be grade 5 or better 5 Rap the output end of the main shaft with a soft hammer to remove any preload on the main bearings and or pilot bearing Note This step must not be omitted Bearing failure may result 6 Measure the crankshaft endplay again The measurement must be the same value as recorded from step 1 under Preliminary Checks Locate and correct the source of preload if the endplay is
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8. Wisconsin USA Operation and maintenance personnel responsible for this equipment should have this manual at their disposal and be familiar with its contents Applying the information in the manual will result in consistent performance from the unit and help reduce downtime Power Take off Service Manual 9 Introduction Twin Disc Incorporated Replacement Parts Parts Lists See the engineering assembly drawings in Engineering Drawings to facilitate ordering spare or replacement parts Ordering Parts All replacement parts or products including hoses and fittings must be of Twin Disc origin or equal and otherwise identical with components of the original equipment Use of any other parts or products will void the warranty and may result in malfunction or accident causing injury to personnel and or serious damage to the equipment Renewal parts and service parts kits may be obtained from any authorized Twin Disc distributor or service dealer Parts Shipment Furnish the complete shipping information and postal address All parts shipments made from the factory will be FOB factory location USA State specifically whether the parts are to be shipped by freight express etc If shipping instructions are not specified the equipment will be shipped the best way considering time and expense Twin Disc Incorporated will not be responsible for any charges incurred by this procedure Twin Disc Incorporated having st
9. a Avoid excessive tightening of belts or chains See Table 5 for allowable side load information A CAUTION Verify the PTO is properly lubricated prior to starting the engine Serviceable points for the throwout collar have a hydraulic zerk grease fitting The main bearings are lubricated by oil contained in an oil cavity in the bearing carrier The sealed for life pilot bearing should not be lubricated during service See Lubrication in the Maintenance section for more information Improper lubrication will result in premature failure of components A CAUTION Verify the clutch is adjusted according to the procedure outlined in Clutch Adjustment in the Maintenance section Failure to do so will result in premature clutch wear and failure Twin Disc will not be responsible for any damage or injury resulting from improper adjustment and or lubrication This includes any accessory drives and loads 22 Power Take Off Service Manual Twin Disc Incorporated Installation ENGINE INDICATOR DEGREE OF DEFLECTION LOAD DIRECTION FEONHEEL HOUSING Figure 8 Determining Deflection While Applying Side Loads A CAUTION The dial indicator should not be applied while the unit is operating This could result in damage to the dial indicator Power Take Off Service Manual 23 Installation Twin Disc Incorporated Table 1 Torque Values for U S Fasteners Thread mf ee wo
10. Remove burrs and scratches with crocus cloth or a soft stone Replace parts that are deeply grooved or scratched Inspect oil passages for obstructions If an obstruction is found remove it with compressed air or by working a wire or wire brush back and forth through the passage and flushing it with solvent Shafts seal lip contact surfaces and bearing journals 9 10 11 12 13 Inspect machined surfaces for burrs scratches nicks and foreign matter If such defects cannot be removed with crocus cloth or a soft stone replace the part Inspect bearing journals on the shaft for grooved burred or galled conditions that would indicate that the bearing has been turning on the shaft If the damage cannot be repaired to like new condition with a crocus cloth replace the part Inspect oil seal lip contact surfaces on wear sleeves and other surfaces Look especially for scratches or nicks that intersect with or cross the lip contact area If they cannot be removed using a very fine crocus cloth replace the part Inspect threaded openings for damaged threads Chase damaged threads with a tap of the correct size Inspect the pilot bearing journal on the clutch shaft If it is worn in any way or if it shows signs that the pilot bearing has been turning on the journal replace the clutch shaft Power Take off Service Manual Twin Disc Incorporated Assembly Clutch Shaft and Housing Assembly Refer to the parts li
11. See Figure 4 Figure 4 Checking Driving Ring Pilot Bore of Flywheel 9 Rotate the shaft through one entire revolution and note the driving ring bore eccentricity The total indicator reading must not exceed 13 mm 005 10 Adjust the indicator stem so that it rides on the pilot bearing bore cavity See Figure 5 Figure 5 Checking Pilot Bearing Bore of Flywheel 11 Rotate the shaft through one entire revolution and note the pilot bearing bore eccentricity The total indicator reading must not exceed 13 mm 005 Note Eccentricity between the driving ring pilot bore figure 4 and the pilot bearing bore figure 5 must not exceed 20 mm 008 Power Take Off Service Manual 17 Installation Twin Disc Incorporated Drive Ring Installation 1 Clean the drive ring and flywheel of any dirt or debris as necessary 2 Use crocus cloth or emery cloth to remove any surface imperfections such as nicks burrs and sharp edges on the O D or the surface that will be mounted against the flywheel face 3 Use crocus cloth or emery cloth to remove any surface imperfections such as nicks burrs and sharp edges the 1 0 of the flywheel pilot bore or on the face that will be in contact with the drive ring 4 Position the drive ring against the flywheel piloted in the mounting bore and secure with eight hex head capscrews Torque the capscrews to the proper specifications given in Table
12. and backplate so they are perfectly aligned when the pto is installed on the engine Power Take off Service Manual 55 Assembly Twin Disc Incorporated PTO Final Assembly Install the clutch in the clutch housing Refer to the parts list and exploded view illustration near the back of this manual 1 Set up and support the main housing assembly 39 with attached parts on the bench with the input side facing up Note The output end of the shaft must rest securely on a solid surface 2 Carefully place the clutch assembly over the clutch shaft while A Aligning the trunnions on the collar with the throwout fork B Aligning the keyways in the hub and back plate 3 Partially install the hub key 50 in the keyway Tap the hub and back plate with a large but soft mallet to seat it on the tapered surface of the clutch shaft Be sure the output end of the shaft is resting solid surface to absorb the force through the shaft rather than through the bearing surfaces 4 Drive the hub key 50 into position slightly below the surface of the hub and back plate Note Do not use excessive hammer force when installing the key 5 Install the hub nut lockwasher 5 over the clutch shaft 51 locating its tab in the drilled hole on the hub and back plate 10 Install the hub nut and tighten and torque to 40 7 Nm 30 ft Ib 6 Tighten the hub nut an additional 3 4 7 8 turn clockwise then bend a side o
13. not the same value A CAUTION Engine and or PTO failure will result from any excessive preload on components 20 Power Take Off Service Manual Twin Disc Incorporated Installation d Install the key 52 on the output end of the clutch shaft and install the drive sheave chain sprocket or u joint flange as the application requires Note A PTO support plate mounted at the output bearing retainer must be used Refer to Engineering Drawings towards the back of this manual Power Take Off Service Manual 21 Installation Twin Disc Incorporated Installation Tips Avoid excessive misalignment between the engine and PTO Check the following if abnormal wear of parts exists Excessive loads tend to deflect parts to which PTO s mounted dial indicator can be mounted on a rigid part of the engine or independently on the foundation to determine deflection under actual operating conditions Readings taken before the drive is installed with the engine standing still and when under operating conditions with the engine off and all belts chains driveshafts and or support plates attached and secured with bolts torqued to specifications will indicate the extent of deflection In no case should the deflection exceed 25 mm 010 at the bearing carrier See Figure 8 Note The dial indicator should never be applied with the engine running This is unsafe and could result in damage to the dial indicator
14. off Removal From The Engine 39 Clutch Removal and Disassembly 40 Clutch Shaft and Housing Disassembly 42 Power Take off Service Manual 7 Table of Contents Twin Disc Incorporated PESOS 45 Cleaning 5 45 Clutch Shaft and Housing Assembly 47 Clutch Assembly rea 54 Power Take off Final Assembly 56 IBF3180P Series Parts Identification List 58 IBF318OP Series Exploded View 59 Engineering Drawings 61 IB3180P001 2 IB3180P002 2 IB3180P003 2 IB3180P004 2 62 IB3180P011 2 IB3180P012 2 IB318OP013 2 62 IBF3180P 0 X 9918 X 9918 A X 9918 B 63 8 Power Take off Service Manual Twin Disc Incorporated Introduction Introduction General Information This publication provides the information necessary for the operation and maintenance of the Twin Disc Incorporated equipment specified on the cover of this manual Specific engineering details and performance characteristics can be obtained from the Product Service Department of Twin Disc Incorporated Racine
15. off Service Manual Twin Disc Incorporated Assembly 9 Coat the I D of wear sleeves 47 54 with an anerobic sealant Twin Disc part number M2828 Using wear sleeve drivers T 13854 input side and T 13855 output side See figures 12 and 13 press the sleeves onto the shaft one from each end Be sure the contours blend in with the shoulders of the clutch shaft See figure 14 Remove excess sealant when sleeves are in their proper positions on the shaft Coat both seal lips with a light film of clean No 30 engine oil STAMP T13855 output ab ri P f 138 099 meat dia e 119 177 mm 4 755 dia grind 119 228 mm 4 757 3 2 mm 1 8 1 59 mm 1 16 71 37 mm 2 81 dia 4 17 46 mm 68 t _ 127 178 mm 5 007 dia 127 229 mm 5 009 igure 15 eeve looi l output side Contour is flush Wear sleeve 47 or 54 Shaft wear sleeve shoulder Shaft shoulder Figure 4 Locating the oil seal wear sleeves on the shaft Power Take off Service Manual 49 Assembly 50 Twin Disc Incorporated Install the clutch shaft and bearing cones into the bearing carrier 10 11 12 13 Place the bearing carrier 55 in a large bench vise with protective jaws or securely support it on a bench with the input end up There must be approx 30 5 cm 12 inches clearance below the carrier to install the shaft Carefully install shaft and
16. original customer but not to exceed twelve 12 months of service whichever occurs first This is the only warranty made by Twin Disc Incorporated and is in lieu of any and all other warranties express or implied including the warranties of merchantability or fitness for a particular purpose and no other warranties are implied or intended to be given by Twin Disc Incorporated The original customer does not rely upon any tests or inspections by Twin Disc Incorporated or on Twin Disc Incorporated s application engineering The exclusive remedy provided by Twin Disc Incorporated whether arising out of warranty within the applicable warranty period as specified or otherwise including tort liability shall at the sole option of Twin Disc Incorporated be either the repair or replacement of any Twin Disc Incorporated part or product found by Twin Disc Incorporated to be defective and the labor to perform that work and to remove and reinstall or equivalent credit In this context labor is defined as the flat rate labor hours established by Twin Disc Incorporated in the published Twin Disc Flat Rate Schedule required to remove disassemble inspect repair reassemble reinstall and test the Twin Disc Incorporated product only Under no circumstances including a failure of the exclusive remedy shall Twin Disc Incorporated be liable for economic loss consequential incidental or punitive damages The above warranty and remedy are subject to
17. points and result in damage or personal injury A CAUTION Select lifting eyebolts to obtain maximum thread engagement with bolt shoulder tight against housing Bolts should be near but should not contact bottom of bolt hole Power Take off Service Manual 11 Introduction Safety Twin Disc Incorporated General Safe practices must be employed by all personnel operating and servicing this unit Twin Disc Incorporated will not be responsible for personal injury resulting from careless use of hand tools lifting equipment power tools or unaccepted maintenance operating practices Important Safety Notice 12 Because of the possible danger to person s or property from accidents which may result from the use of manufactured products it is important that correct procedures be followed Products must be used in accordance with the engineering information specified Proper installation maintenance and operation procedures must be observed Inspection should be made as necessary to assure safe operations under prevailing conditions Proper guards and other suitable safety codes should be provided These devices are neither provided by Twin Disc Incorporated nor are they the responsibility of Twin Disc Incorporated Power Take off Service Manual Twin Disc Incorporated Introduction Sources of Service Information Each series of manuals issued by Twin Disc Incorporated is current at the time of printing When require
18. readjusted and any time the travel or position moves from the specifications described above Determine the length of travel for the engaging cylinder T Multiply the length of the hand lever by 7 92 mm 312 This provides the required length of the piston stroke Note The hand lever length is the distance from the center of the operating shaft to the point where the cylinder will be connected to the lever Determine the engaging force in pounds required at the cylinder 8 Divide 8112 Ib in by the length of the hand lever in inches This provides the required force in pounds that must be provided by the piston Note Periodically disconnect the power cylinder to measure the clutch engagement force Refer to Clutch Adjustment in the Maintenance section 38 Power Take off Service Manual Twin Disc Incorporated Disassembly Disassembly Power Take off Removal From The Engine Refer to the parts list exploded view illustration near the back of this manual 1 Remove all attached parts from the output end of the power take off 2 Remove the hex nut 68 and hex head capscrew 67 securing the hand lever 69 to the operating shaft 65 3 Loosen the support plate from the base mounting 4 Remove the oil drain plug 58 and drain the oil from the oil cavity in the bearing carrier 55 5 Remove the shaft key 52 6 Attach lifting equipment to the power take off and take out the slack just enough to begin
19. 1 A CAUTION Drive ring attachment screws must be grade 8 Do not use substitutes Ball Type Pilot Bearing Installation Refer to the exploded view illustration near the back of this manual L Support the output end of the clutch shaft 2 Make sure the clutch shaft end stub is free of surface imperfections such as nicks burrs and sharp edges Remove them using fine emery cloth or crocus cloth 3 Place the bearing spacer used only with the ball type bearing on the shaft Tap the pilot bearing part way on to the clutch shaft Note Tap only on the inner race of the bearing Any impact on the outer race or balls will damage the bearing 4 Install the pilot bearing all the way onto the shaft so it is flush to the end Apply force to only the inner race of the bearing A CAUTION Do not damage the seal of the pilot bearing A damaged seal renders the pilot bearing destroyed and it must be replace with a new bearing 18 Power Take Off Service Manual Twin Disc Incorporated Installation Roller Type Pilot Bearing Installation Some Twin Disc ptos are designed with roller type pilot bearings All of the roller type bearings available from Twin Disc are the separate race type i e the inner race is removable from the outer race and seal assembly Due to its design configuration axial alignment of the inner and outer races is extremely important The information and instructions below will assure proper bearing mounting In
20. F3180P 00 48 mm 019 Note The flywheel and crankshaft of the engine must be held against either the front or rear of the crankshaft thrust bearing while the total indicator sweep is being made Power Take Off Service Manual 15 Installation Twin Disc Incorporated 4 Readjust the indicator so the stem rides on the pilot bore of the flywheel housing face See Figure 2 a Figure 2 Checking Flywheel Housing Bore 5 Rotate the shaft through one entire revolution and note the runout The total indicator reading should not exceed IBF3180P 0 41 mm 016 IBF3180P 00 48 mm 019 6 Remove the indicator base from the flywheel and bolt itto the flywheel housing face Position the indicator stem so that it rides where the drive ring will set on the flywheel face See Figure 3 o Figure 3 Checking Driving Ring Surface of Flywheel 7 Rotate the shaft through one entire revolution and note the face runout of the flywheel The total indicator reading must not exceed 01mm 0005 25 4 mm per inch of flywheel diameter Note The flywheel and crankshaft of the engine must be held against either the front or rear of the crankshaft thrust bearing while the total indicator sweep is being made 16 Power Take Off Service Manual Twin Disc Incorporated Installation 8 Readjust the indicator stem so it rides on the driving ring pilot bore of the flywheel
21. Note All threads and bearing face to be lubricated with light oil film prior to assembly 24 Power Take Off Service Manual Twin Disc Incorporated Installation Table 2 Metric Coarse Thread Capscrews Bolts and Nuts Thread Property Class 8 8 Property Class 10 9 Property Class 12 9 Size lb ft Nm lb ft Nm lb ft Nm M6 6 5 7 5 9 10 9 10 12 14 10 12 14 16 M8 16 18 21 25 23 26 31 35 25 29 34 40 M10 32 36 43 49 44 51 60 68 51 59 70 80 12 55 63 74 86 77 88 104 120 89 103 121 139 M16 132 151 179 205 189 217 256 294 219 253 298 342 M20 257 295 348 400 364 418 493 567 429 493 581 669 M24 445 511 603 693 626 720 848 976 737 848 1000 1150 M30 714 820 987 1113 1235 1421 1674 1926 1475 1697 2000 2301 Table 3 Tapered Pipe Plugs with thread lubricant In cast iron or steel In aluminum NPTF Size in Nm or 5 lb ft or 5 Nm or 5 Ib ft 5 1 16 27 11 5 8 5 7 5 5 5 1 8 27 14 10 5 9 6 5 1 4 18 34 25 21 5 16 3 8 18 36 5 27 23 17 1 2 14 68 50 40 5 30 3 4 14 73 54 46 34 1 11 1 2 108 80 68 50 1 1 4 11 1 2 115 85 75 55 1 1 2 11 1 2 115 85 75 55 Power Take Off Service Manual 25 Installation Twin Disc Incorporated Table 4 Straight Threaded Tube Fittings Hose Fittings and O Rings
22. ase residue Note Do not use any oil or paraffin based solvents Power Take off Service Manual 47 Assembly Twin Disc Incorporated 7 Use an arbor press to install the two bearing cones on the clutch shaft 51 Use a piece of steel tubing approximately 63 5 cm 25 inches long and just slightly larger in inside diameter than the bearing cone s inside diameter The tubing must not be thick enough to contact the cage of the bearing during installation Install the cones one from each end with the back faces wide section butting against the shoulder on the clutch shaft Note An alternative method to install the bearing cones is to heat them in an oven at 135 C 275 for one hour and install them immediately on the clutch shaft Let the bearing cone cool to room temperature after installation while continuing to apply force as the bearing cools This is necessary to ensure that it remains properly seated 8 After the bearings return to room temperature coat the bearing rollers and both bearing cups with a light film of clean No 30 engine oil STAMP 113854 input side r EI 5 es 3 2 mm 1 8 138 099 mm 5 437 dia NR 6 E ie 1 59 mm 1 16 120 777 mm 4 755 dia grind 120 828 mm 4 757 71 37 mm 2 81 dia 4 17 46 mm 68 EA t 127 178 mm 5 007 dia 127 229 mm 5 009 igure 12 Sleeve Tool 1 13854 input side 48 Power Take
23. bearings in the bearing carrier The output end of the shaft must enter the carrier first Install the forward bearing cup 48 into the bearing carrier Gently tap it into the bore until it just touches against the bearing cone Note Do not pre grease the bearings until the final bearing end play setting is made The bearing cups and cones 48 amp 49 should be oiled prior to assembly Install the o ring 45 in the bore resting against the bearing cup Install the bearing retainer 44 over the clutch shaft and thread it into the bearing carrier until it comes in contact against the o ring and bearing cup Preliminary setting Measure and set bearing end play 14 Continue to tighten the bearing retainer until 6 8 Nm 60 in lbs of torque is required to rotate the shaft Note Do not overtighten Damage may occur to the bearings or bearing retainer Rotate the shaft several revolutions This aligns and seats the bearing cones in the bearing cups and creates a zero clearance Notches Back off direction rotate counterclockwise for retainer lock bolt igure 15 Bearing Retainer Notches Power Take off Service Manual Twin Disc Incorporated 15 16 Assembly Note the position of any one of the notches in the bearing retainer relative to the threaded hole for the retainer lock capscrew Back off the bearing retainer 44 6 8 notches to create a clearance between the bearing retainer and bear
24. d changes are made to reflect advancing technology and improvements in state of the art Individual product service bulletins are issued to provide the field with immediate notice of new service information For the latest service information on Twin Disc products contact any Twin Disc distributor or contact the Product Service Department Twin Disc Incorporated Racine Wisconsin 53405 3698 USA by e mail at service twindisc com Power Take off Service Manual 13 Introduction Twin Disc Incorporated Warranty Equipment for which this manual was written has a limited warranty For details of the warranty refer to the warranty statement at the front of this manual 14 Power Take off Service Manual Twin Disc Incorporated Installation Installation Preliminary Checks Note All measurements must be taken with the engine or motor mounted on its supports after the flywheel and housing have been thoroughly cleaned 1 Measure and record the engine crankshaft or motor shaft endplay using a dial indicator Record this value as it will be used later 2 Bolt the indicator to the flywheel so the indicator is perpendicular to the flywheel housing face and the indicator stem rides on the flywheel housing face See Figure 1 a Figure 1 Checking Flywheel Housing Face 3 Rotate the shaft through on entire revolution and note the runout The total indicator reading must not exceed IBF3180P 0 41 mm 016 IB
25. erlines N SE priven Unit n y Figure 11 Alignment U Joint Type Installation 8 Secure the engine and driven unit Recheck A and B C and D as described in steps 6 and 7 above All measurements must be within the specifications If not repeat steps 5 through 7 until specifications are met Power Take off Service Manual 37 Maintenance Twin Disc Incorporated Setting Up Air Engagement on Twin Disc Power Take Offs 1 The cylinder should be located so that the piston moves forward and backward in exactly the same direction as the engagement lever and is aligned so it travels in exactly the same plane 2 The air cylinder must be of sufficient size to operate the required torque to engage the clutch It must have some means to make adjustment on the piston stroke 3 Air pressure must be constant Low pressures could give only partial engagement which will cause failures of the clutch and throwout collar 4 The piston travel must be within limits established to engage and disengage the clutch Failure to provide these parameters will cause failure and possible breakage of the clutch 5 The engaging cylinder must not place a pressure either in the engaged or disengaged direction after completion of its cycle The throwout collar must float free after engagement or disengagement Operating the pto with constant pressure on the throwout collar will result in failure 6 The air cylinder must be readjusted when the clutch is
26. f the hub nut lockwasher up against a flat on the hub nut T Route the flexible hose assembly 37 clear of all moving parts and push the end hose fitting 36 through the hole in the clutch housing 56 Power Take off Service Manual Twin Disc Incorporated Assembly 8 Install the lockwasher 35 and jam nut 34 to retain the end fitting 36 in the housing Torque the capscrew to the proper specifications given in Torque Values for Fasteners in Table 1 of the Installation section A CAUTION Confirm that the hose assembly is not twisted or applying preload to the collar assembly Final assembly and lubrication 9 Install the power take off according to instructions in the Installation section 10 Adjust the clutch according to Clutch Adjustment in the Maintenance section 11 Fill the bearing carrier cavity with oil according to lubrication specifications in the Maintenance section 12 Lubricate the remainder of the pto according to lubrication specifications in the Maintenance section 13 Place the instruction cover plate 40 in position on the housing and secure with 2 hex head cap screws 5 16 18 x 1 2 41 Torque the capscrews to the proper specifications given in Torque Values for Fasteners in Table 1 ofthe Installation section 14 Install the shaft key 52 and all parts previously removed from the output end of the clutch shaft 15 Install the pipe nipple 59 Torque the pipe nipple to the proper speci
27. ffset within the limits recommended by the u joint manufacturer to prolong the life of the universal joint needle bearings Itis extremely important that the center lines of the pto shaft and driven unit input shaft be parallel This will further prevent vibrations which cause premature pto bearing failure Proper lubrication of the pto is important for satisfactory service Refer to lubrication specifications in the Maintenance section Align the centerlines of the pto shaft and the input shaft of the driven unit One possible method is described below 5 To align the engine and gear head by this method two accurate straight edges at least 91 cm 36 long and a tape measure are required Place the straight edges horizontally along the face of the pto and gear head hubs Measure distances A and B These two distances should be equal within 3 17 mm 125 at a point 45 7 18 from the centerline of the shaft Move the engine and or driven unit to obtain this specification Rotate the shafts so the straight edges are in a vertical position Measure the distances C and D as was done for A and B in step 2 These two distances should be equal within 3 17 mm 125 at a point 45 7 cm 18 from the centerline of the shaft Move the engine and or driven unit to obtain this specification Power Take off Service Manual Twin Disc Incorporated Maintenance Vertical Position Horizontal Position Parallel Cent
28. fications given in Torque Values for Fasteners in Table 3 of the Installation section 16 Install the hex head pipe cap 60 on the pipe nipple 17 Install the oil gauge extension 73 in the bearing carrier 55 18 Install the oil level gauge 61 Power Take off Service Manual 57 Assembly Twin Disc Incorporated IBF3180P Series Parts Identification List Description Description Ring driving O ring Bearing pilot Seal oil Spacer bearing pilot Sleeve wear used with ball bearing Bearing tapered roller Nut hub Bearing tapered roller Lockwasher hub nut Key hub and back plate Plate hub and back Shaft clutch Plate driving clutch Key shaft clutch Plate Assembly centering clutch Seal oil Plate pressure Sleeve wear Pin cotter Carrier bearing Lever clutch Capscrew hex head 5 8 11 x 2 1 2 Pin headed lever Plug pipe flush Yoke adjusting Plug pipe drain 1 4 Pin cotter Nipple pipe 1 2 x 2 Link lever Cap pipe hex head 1 4 Pin headed lever Gauge oil level Pin cotter Fork throwout Pin headed sleeve Capscrew hex head 5 16 18 x 2 1 2 Sleeve sliding Shaft operating Key woodruff Key woodruff C Ring collar Capscrew hex head 1 2 13 x 2 1 2 Ring snap external Nut hex 1 2 Spring pin adjusting Lever hand Pin lock adjusting Fitting lubrication Collar throwout Extension oil gauge Nut hex 1 2 20 Shim collar Capscrew hex head 1 2 20 x 3 1 4 Fitting lubr
29. ght or clockwise when looking at the flywheel until 691 917 Nm 510 676 ft Ib of peak torque is required at the operating shaft 65 to engage the clutch 4 Remove the cotter pin or small nail Re engage the adjusting ring lock pin 5 Repeat steps 3 and 4 above as necessary until the proper torque reading is obtained 6 Replace the instruction cover plate 40 and secure with two hex head capscrews 41 Securely tighten Power Take off Service Manual Twin Disc Incorporated Maintenance Driving Plate Replacement Common symptoms indicating that the driving plate assemblies 11 are worn out are 1 The adjusting yoke 17 cannot be turned clockwise any further 2 The friction face surfaces have worn flush with the rivet heads or the rivets are loose It is necessary to remove and disassemble the clutch assembly to replace the driving plate assemblies Split type driving plate assemblies are not recommended for use IBF318OP assemblies Power Take off Service Manual 33 Maintenance Twin Disc Incorporated Field Adjustment Tapered Roller Bearings side loaded pto applications The only approved method for field adjustment of tapered roller bearings in Twin Disc Power Take Off units is by the use of a dial indicator to read actual bearing end play Refer to figure 10 and Final setting Measure and set bearing end play in the Assembly section Figure 10 Dial indicator and power take
30. gs are oiled before inspection Protect clean bearings whether they are new or have been in service from dirt dust grit or any other contaminant 2 Inspect bearings for roughness of rotation Replace the bearing if roughness is found 3 Inspect bearings for corrosion scored scratched cracked pitted or chipped races and for indication of excessive wear of balls or rollers If one of the these defects is found replace the bearing Preventing Entrance of Dirt Into Bearings 4 Dirt and grit in bearings are often responsible for bearing failure Consequently it is important to keep bearings clean Do not remove grease from new bearings Keep the wrapper on new bearings until immediately before they are to be installed Do not expose new clean bearings until they are ready to be used in the assembly Keep them wrapped in clean lint free cloth or paper to keep out dust and debris Protect bearings from contamination even after they are installed on the shaft or in the bore Power Take off Service Manual 45 Assembly 46 Twin Disc Incorporated Housings Cast Parts and Machined Surfaces 5 6 Replace cast parts or housings that are cracked Inspect bearing bores for grooved burred or galled conditions that would indicate that the bearing has been turning in its housing If the damage cannot be repaired to like new condition with a crocus cloth replace the part Inspect bores for wear grooves scratches and dirt
31. hould be a 12 7 cm 5 clearance below the input end of the clutch shaft 51 4 Remove 8 hex head capscrews 56 and remove the support plate and the bearing carrier 55 from the housing 39 5 Lift the clutch shaft and bearing carrier unit from the clutch housing 6 Secure the clutch shaft with attached parts in a large vise with protective jaws with the input end of the clutch shaft facing up gripping the rear cast section of the bearing carrier in the vise T Remove hex head capscrew 42 and the bearing retainer lock 43 from the bearing carrier 55 Use a spanner wrench or a wide end punch and hammer to unthread the bearing retainer 44 from the bearing carrier 8 Remove the oil seal 47 from the bearing retainer ONLY if it is being replaced 9 Remove the o ring 45 from the bearing retainer 10 Liftthe clutch shaft 51 with 2 bearing cones 48 amp 49 from the bearing housing The forward bearing cup 48 will come out with the shaft and bearing cones 11 Useanarbor press or bearing puller to remove the bearing cones 48 4 49 from the clutch shaft only if replacement is necessary The bearing cones remove in opposite directions away from the machined shoulder on the clutch shaft 42 Power Take off Service Manual Twin Disc Incorporated Disassembly 12 Remove wear sleeves 47 and 54 from the clutch shaft by using a dull chisel and rapping it sharply The sleeves should expand slightly and bec
32. ication Nut jam hex 5 8 Lockwasher nut jam 5 8 Fitting hose Hose flexible Fitting hose Housing clutch Plate cover instruction Capscrew hex head 5 1 6 18 x 1 2 Capscrew hex head 5 16 18 x 5 8 Lock retainer bearing Retainer bearing PY B S SB SB Sm Sm om om D Pp POND DP 5 HRA BH NY WO Power Take off Service Manual Twin Disc Incorporated Assembly IBF3180P Series Exploded View Note Typical unit illustrated 67 68 Power Take off Service Manual 59 Assembly Twin Disc Incorporated 60 Power Take off Service Manual Twin Disc Incorporated Engineering Drawings Engineering Drawings The engineering d
33. ing cup Note For in line operation back off the bearing retainer 44 8 9 notches Bump the output end of the shaft with a soft mallet hard enough to move and seat the front bearing cup up against the bearing retainer and create the specified bearing clearance Install the bearing carrier unit on the clutch housing 17 18 19 Set the clutch housing 39 on a work bench securely supported with wooden blocks with the input end of the housing facing down There should be 12 7 cm 5 inches of clearance below the housing to allow for installation of the clutch shaft Lift the bearing carrier and shaft using a hoist securely attached to it Carefully lower the bearing carrier and shaft onto the clutch housing Disconnect the hoist Position the carrier so the word top will be up when the clutch housing is in its final position on the engine Attach the support plate and secure the carrier to the clutch housing with 8 hex head capscrews 56 5 8 11 x 2 1 2 Torque the capscrews to the proper specifications given in Torque Values for Fasteners in Table 1 of the Installation section Final setting Measure and set bearing end play 20 21 22 23 Securely support the unit with the clutch shaft in vertical position and the output end up see figure 16 Be sure the shaft is clear to rotate Attach an eyebolt in the thread at the output end of the shaft Attach a hoist with a thrust bearing equip
34. ipulated the bill of material number on the unit s nameplate absolves itself of any responsibility resulting from any external internal or installation changes made in the field without the express written approval of Twin Disc All returned parts new or old emanating from any of the above stated changes will not be accepted for credit Furthermore any equipment which has been subjected to such changes will not be covered by a Twin Disc warranty Power Take off Service Manual Twin Disc Incorporated Introduction Preventive Maintenance Troubleshooting Frequent reference to the information provided in this manual regarding daily operation and limitations of this equipment will assist in obtaining trouble free operation Schedules are provided for the recommended maintenance of the equipment and if observed minimum repairs aside from normal wear will result In the event a malfunction does occur a troubleshooting table is provided to help identify the problem area and lists information that will help determine the extent of the repairs necessary to get a unit back into operation Lifting Bolt Holes Most Twin Disc products have provisions for attaching lifting bolts The holes provided are always of adequate size and number to safely lift the Twin Disc product A CAUTION These lifting points must not be used to lift the complete power unit Lifting excessive loads at these points could cause failure at the lift point or
35. ng 26 to secure the collar ring on the sleeve Power Take off Service Manual Twin Disc Incorporated 11 12 T3 14 Assembly Lubricate the shoulder of the sliding sleeve with No 30 engine oil prior to installation of the split collar Place the split collar 29 halves over the collar ring 25 Place two shims 31 between the collar halves and install 2 hex head capscrews 1 2 20 x 3 1 4 32 through the halves Install 2 hex nuts 30 on the capscrews Torque the capscrews to the proper specifications given in Torque Values for Fasteners in Table 1 of the Installation section Check oollar rotation to be sure it turns freely on the sliding sleeve Install the hose fitting 38 in the collar trunnion and attach the flexible hose 37 hose fitting 36 and lubrication fitting 33 Visually center the driving plates on the clutch and align the teeth Press down on the collar assembly to lock the plates in place If necessary pull the adjustment lock pin to compress the lock pin spring and rotate the adjusting yoke assembly until the plates are locked in position when the collar is pressed down Note This is an initial setting to hold the plates in place until after the pto is mounted on the engine so itis imperative that the teeth be exactly aligned and the plates are exactly centered on the clutch The driving ring may be used as an alignment fixture to align the teeth and center the plates relative to the hub
36. o persons or properly including without limitation the original customer s and subsequent purchaser s employees and property due to their acts or omissions or the acts or omissions of their agents and employees in the installation transportation maintenance use and operation of said equipment Only a Twin Disc Incorporated authorized factory representative shall have authority to assume any cost or expense in the service repair or replacement of any part or product within the warranty period except when such cost or expense is authorized in advance in writing by Twin Disc Incorporated Twin Disc Incorporated reserves the right to improve the product through changes in design or materials without being obligated to incorporate such changes in products of prior manufacture The original customer and subsequent purchasers will not use any such changes as evidence of insufficiency or inadequacy of prior designs or materials If failure occurs within the warranty period and constitutes a breach of warranty repair or replacement parts will be furnished on a no charge basis and these parts will be covered by the remainder of the unexpired warranty which remains in effect on the complete unit January 16 2002 TDWP0002 Power Take off Service Manual 5 Power Take off Service Manual Twin Disc Incorporated Table of Contents Table of Contents Ui a aliaron 9 General Information msiosiacnininacacncinoncan
37. off position for measuring and setting bearing end play 34 Power Take off Service Manual Twin Disc Incorporated Bearing End Play In Line Applications Maintenance 1 Field experience with u joint type irrigation pump or other in line drive installations indicates that extra care must be taken when adjusting the power take off tapered roller bearings 2 The end play for these applications is special for the above types of applications 3 Set bearing end play for these special applications using the method described for side loaded applications on on the previous pages but set to the specifications shown in table 6 Table 6 End Play for Special Applications Model Number Recommended End Play mm inches 18 Series 33 41 013 016 Power Take off Service Manual 35 Maintenance Twin Disc Incorporated Alignment U Joint Type Installation 36 Refer to figure 11 on next page To realize the longest possible life of the power take off bearings the best possible alignment must be maintained between the center line of the power take off shaft and the center line of the driven unit shaft 1 Itis extremely important that the forks of the drive shaft between the pto and the driven unit lie in the same plane This will prevent severe vibrations from occuring in the drive shaft The center lines of the pto shaft and the driven unit input shaft must be o
38. ome loosened from the shaft for easy removal If the sleeves do not loosen sufficiently with the first rap rotate the shaft 180 and try again from the opposite side A CAUTION Be sure the chisel does not cause a groove or slot on the shaft shoulder beneath the wear sleeves Oil leakage will result if the surface is not smooth and undamaged when the new sleeves are installed 13 Remove the rear bearing cup 49 from the bearing carrier by first removing the two 1 2 pipe plugs 57 from the bearing carrier Then tap the race from the bearing carrier using a blunt end punch through the holes Remove the race ONLY if replacement is necessary 14 Remove the oil seal 53 from the bearing retainer 55 ONLY if it is being replaced 15 Remove the oil gauge extension 73 ONLY if is being replaced Power Take off Service Manual 43 Disassembly Twin Disc Incorporated 44 Power Take off Service Manual Twin Disc Incorporated Assembly Assembly Cleaning and Inspection Refer to the parts list and exploded view illustration near the back of this manual General Replace any part that is worn or damaged Bearings 1 Thoroughly wash bearings in clean solvent ifthey have been in service Soak bearings in solvent ifthey are particularly dirty A CAUTION Never dry bearing with compressed air Do not spin bearings while they are not lubricated Oil bearings with SAE 10 engine oil immediately after cleaning Be sure bearin
39. ons given in Torque Values for Fasteners in Table 1 of the Installation section Install the operating shaft and throwout yoke 31 32 33 34 35 Position the clutch housing on bench with the input end facing up Install the operating shaft 65 halfway into the clutch housing Slip the throwout fork 63 onto the operating shaft and push the shaft through to the hole on the other side of the clutch housing far enough to expose one of the woodruff key slots at the center of the throwout fork Install one woodruff key 66 in the operating shaft Push the operating shaft the other way to expose the other key slot in the center of the fork Install the other woodruff key 66 Center the operating fork so the hex head capscrew 5 16 18 x 2 1 2 64 will enter the bottom of the throwout fork and thread into the top section Install the hex head capscrew and tighten Torque the capscrew to the proper specifications given in Torque Values for Fasteners in Table 1 of the Installation section Power Take off Service Manual 53 Assembly Twin Disc Incorporated Clutch Assembly 54 Refer to the parts list and exploded view illustration near the back of this manual 1 Set the hub and back plate 10 on a bench with the threaded and splined section facing up Install a driving plate assembly 11 on the hub and backplate Install a center plate assembly 12 so it rests flat on the driving plate meshing
40. ot with the dial indicator base mounted on a rigid part of the engine Power Take Off Service Manual 27 Installation Twin Disc Incorporated 28 Power Take Off Service Manual Twin Disc Incorporated Allowable Side Loads REAR OF BEARING HOUSING Maintenance Maintenance OF SIDE CENTERLINE LOAD _ 126 000 x H P NxD xFxLF Figure 9 Allowable Side Pull and Formula to Determine Applied Load Formula values for Figure 9 a a a L actual applied load Lbs N shaft speed RPM D pitch diameter in at sheave etc F load factor 1 0 for chain or gear drive 2 5 for all V belts 1 5 for timing belts E 3 5 for flat belts LF 2 1 for reciprocating compressors and other severe shock drivers and 1 8 for large inertia type drive crushers chippers planers Power Take off Service Manual 29 Maintenance Twin Disc Incorporated z 30 Table 5 Allowable Side Loads IBF3180P IB318P001 IB318P002 rm X Distance MEN 4 5 7 9 6529 11295 6529 11295 12278 IBF3180P IB318P003 IB318P012 IB318P013 X Distance 9 1000 5517 1200 5517 1800 13683 13162 11175 5517 2400 11175 8328 7387 6637 5517 3000 12880 12389 11175 8328 6637 5517 BEN 9555 7921 12036 9555 79 A CAUTION A support plate must be attached at the rear of the PTO if it is subjected to side load operation of
41. ped swivel hook to the eyebolt Securely attach a dial indicator to the housing and locate the stem so the tip is contacting the end of the shaft and movement of the tip is exactly vertical the same direction as the movement of the shaft Lift the unit off the supports using the hoist Apply approximately 90 7 Kg 200 Ibs of downward force on the bearing carrier while dial indicator is being set Mark a spot on the end of the shaft next to the stem as a starting reference point and set the dial indicator to 0 Power Take off Service Manual 51 Assembly Twin Disc Incorporated Dial indicator POS Hoist and swivel hook 4 ab 1 SS Retainer Bearing Retainer Lock Note Typical housing configuration is illustrated Your housing may be designed differently igure 16 Measuring and setting bearing end play 24 Carefully and gently lower the unit back onto the supports Allow the hoist to go slack Apply approximately 90 7 Kg 200 165 of downward force on the shaft while dial indicator reading is being taken The weight of the shaft will be considered part of the 90 7 Kg 200 Ibs Read the dial indicator to read actual bearing end play 25 Repeat steps 23 and 24 to be sure the dial indicator reading repeats with accuracy Adjust the bearing retainer as necessary to obtain 25 36 mm 010 014 bearing end play Note For in line operation adjust the bearing retainer as necessary to obtain the bea
42. rawings included are listed below L B D 0 0 O0 0 eB Note All part numbers listed in the following engineering drawings are for reference only Please refer to your bill of material for part numbers specific to your model IBF3180P 0 IBF3180P 0 IBF318P O IBF318P O IBF318P O IBF318P O IBF318P O IBF3180P 0 IBF3180P 0 IBF3180P 0 Power Take off Service Manual IB318001 2 IB318002 2 IB318003 2 318004 2 318011 2 318012 2 318013 2 9918 9918 X 9918 B Contact your Authorized Twin Disc Dealer for the latest BOM and engineering drawings 61 Twin Disc Incorporated IB3180P004 2 IB3180P012 2 IB3180P013 1 ineering Drawings 3 IB3180P001 2 IB3180P002 2 IB3180P003 2 IB3180P011 2 Eng 3 z 40 8 im BEAVTM 1 adad Old 04081748 Bun n5 mE LOdBICHI us 0 TN ae semi eval 965 cocos een WAN Brose LES pez OL ENT su 526 331108 52524 42958 1 10481 ER Sind 4357 38 LSNA Dioddns v 2 wa 45968 NOlYHsdO 7 Favo OL 3434 9 TENOIUCH 494 YN nanssene 425 BSE Fr 050 LEN i4 60798 21026128 nel VE ONINTOYO NAHM ISM WOR Ol 3435
43. ring end play shown in the Maintenance Section of this manual Note Bump the output end of the shaft with a soft mallet as in step 16 above hard enough to move and seat the front bearing cup up against the bearing retainer and create 52 Power Take off Service Manual Twin Disc Incorporated 26 27 28 29 30 Assembly the specified bearing clearance after each adjustment of the bearing retainer Once the bearing end play adjustment is completed match mark the bearing retainer and bearing housing so the bearing retainer may be removed and reinstalled in the same exact position After match marking the bearing retainer and bearing housing remove the bearing retainer 44 o ring 45 and front bearing cup 48 Remove the shaft and pre lubricate the bearing cones 48 amp 49 with grease specified in the lubrication specifications in the Maintenance section This will assure adequate lubrication at initial start up Note Do not pack the bearing carrier cavity with grease The proper amount of grease will be added later Reinstall the shaft with bearings front bearing cup o ring and bearing retainer Position the bearing retainer exactly as it was prior to removal in step 26 Realign the match marks When the bearing retainer is in the proper position Install the bearing retainer lock 43 in the nearest notch and secure the lock with the hex head capscrew 42 Torque the capscrew to the proper specificati
44. st and exploded view illustration near the back of this manual Bearing Carrier 1 Position the bearing carrier 55 on the bed of an arbor press with the output end up Rest the oil seal 53 in the bore the seal lip should be down extending toward the input end of the bearing carrier Use a flat steel plate slightly larger in diameter than the O D of the oil seal Using the flat plate on top of the seal press the seal straight into the bore until the steel plate stops against the surface of the carrier The rear of the outer shell of the seal should be flush with the surface Pre lubricate the seal lip with clean No 30 engine oil Note Press only against the outer shell of the seal Do not damage the seal lip Install 2 pipe plugs 57 in the threaded hole on the back of the bearing Carrier Install the drain plug 58 in the threaded hole on the flange of the bearing carrier Invert the bearing carrier 55 on the bench so the input end is up Use a piece of steel tubing or round plate slightly smaller in diameter than the outer diameter ofthe rear main bearing cup 49 Place the bearing cup 49 on the carrier back wide section face down Be sure the steel tubing or plate does not press against the bearing s roller contact surface in the cup Press the cup to the bottom of the bore Clutch Shaft 6 Clean the tapered bearing cones 48 amp 49 and clutch shaft 51 with isopropyl solvent to remove any oil or gre
45. structions for assembly 1 Position the pto on the bed of a press with the pilot bearing end up and the output end of the clutch shaft resting firmly on a solid support Note The pto must be standing on the output end of the shaft Press the pilot bearing inner race on the clutch shaft so it is flush with the input end of the shaft See figure 6 Carefully measure dimension a as shown Record the measurement Refer to the chart below Subtract the appropriate roller bearing nominal width c from measurement a This will determine the position of the pilot bearing outer race in the flywheel bore dimension b See figure 7 Install the pilot bearing outer race in the flywheel and position it at dimension b See figure 7 Bearing O D Brg Nominal Width c IB318P003 M2713 100 035 100 020 mm 3 9384 3 9378 39 6 mm 1 56 1B318P011 M2529 80 025 80 013 mm 3 1506 3 1501 34 9 mm 1 37 IB318P012 M2713 100 035 100 020 mm 3 9384 3 9378 39 6 mm 1 56 IB318P013 M2713 100 035 100 020 mm 3 9384 3 9378 39 6 mm 1 56 Flywheel Flywheel E Housing Flush with end Face Pilot Bearing of the shaft InnerRace _ 7 AI PilotBearing ER 77 outer Race Tor b E lal Figure 6 Figure 7 Power Take Off Service Manual 19 Installation Twin Disc Incorporated PTO Installation to Engine or Driving Member Refer to the exploded view illustration near the back of this manual
46. tandard bearing puller to remove the pilot bearing 2 and spacer 3 if used from the clutch shaft 51 Note The pilot bearing will be destroyed upon removal If the bearing seal is broken the bearing is considered destroyed Straighten the bent portion of the hub nut lockwasher 5 Use a 4 wrench or socket to remove the hub nut 4 from the clutch shaft 51 Use a gear puller with threaded legs for 3 4 10 UNC tapped holes to pull the clutch assembly 10 through 32 from the clutch shaft Install the puller so the threaded legs screw into the holes provided in the hub and back plate 10 and the jackscrew exerts force on the end of the clutch shaft A CAUTION The thread puller holes are not to be used as jackscrews Remove the clutch and puller from the clutch shaft Remove the hub key 50 if it was not removed with the clutch Set the clutch assembly on a bench with the throwout collar 29 through 32 facing up Remove the grease fitting 33 from the hose fitting 36 Remove the hose 37 and hose fitting 38 from the trunnion of the collar assembly Power Take off Service Manual Twin Disc Incorporated Disassembly Pull the adjusting lock pin 28 compressing the lock pin spring 27 and unscrew the adjusting yoke 12 from the hub and back plate assembly 10 Remove the adjusting lock pin and spring from the adjusting yoke Remove the external snapring 26 collar ring 25 and woodruff key 24 from
47. the following terms and conditions Complete parts or products upon request must be returned transportation prepaid and also the claims submitted to Twin Disc Incorporated within sixty 60 days after completion of the in warranty repair The warranty is void if in the opinion of Twin Disc Incorporated the failure of the part or product resulted from abuse neglect improper maintenance or accident The warranty is void if any modifications are made to any product or part without the prior written consent of Twin Disc Incorporated The warranty is void unless the product or part is properly transported stored and cared for from the date of shipment to the date placed in service The warranty is void unless the product or part is properly installed and maintained within the rated capacity of the product or part with installations properly engineered and in accordance with the practices methods and instructions approved or provided by Twin Disc Incorporated The warranty is void unless all required replacement parts or products are of Twin Disc origin or equal and otherwise identical with components of the original equipment Replacement parts or products not of Twin Disc origin are not warranted by Twin Disc Incorporated As consideration for this warranty the original customer and subsequent purchaser agree to indemnify and hold Twin Disc Incorporated harmless from and against all and any loss liability damages or expenses for injury t
48. the shaft Drive plate assemblies supplied for service replacement as assembly only items Power Take off Service Manual Twin Disc Incorporated Maintenance Lubrication Refer to Engineering Drawings for location of fittings Grease Specifications Use NLGI Grade 2 grease with a minimum 149 C 300 F drop point for all lubrication Operating Shaft Fittings Apply 1 cc of grease one shot from a grease gun before starting and then every 3 months or 100 hours operation whichever occurs first Throwout Collar Apply 1 cc of grease one shot from a grease gun daily before start up and then every 8 10 hours operation thereafter through the fitting on the tapered part of the housing Oil Specifications Use a good grade MS DG or better SAE No 30 engine oil Main Bearings The tapered roller bearings are lubricated from oil contained in an oil cavity in the bearing carrier The oil level should be checked and maintained every 8 10 hours operation Drain and refill the oil cavity every 6 months or 1000 hours whichever occurs first Pilot Bearing The pilot bearing supplied with the power take off is pre lubricated and sealed for life No maintenance is required Inspection is recommended every two years or when the power take off is removed from the driving component for servicing Power Take off Service Manual 31 Maintenance Twin Disc Incorporated Clutch Adjustment 32 Note Ne
49. the sliding sleeve 17 Remove 2 hex huts 30 and 2 hex head bolts 32 the throwout collar halves 29 and shims 31 from the sliding sleeve 23 Straighten and remove the 4 cotter pins 14 and the 4 clutch lever pins 16 and disconnect the levers 15 from the adjusting yoke 17 Straighten and remove the 4 cotter pins 18 and 4 cotter pins 21 Remove 4 lever pins 20 4 sleeve pins 22 8 lever links 19 and 4 levers 15 from the sliding sleeve Remove the pressure plate 13 3 driving plates 11 and 2 center plate assemblies 12 from the hub and back plate 10 Power Take off Service Manual 41 Disassembly Twin Disc Incorporated Clutch Shaft and Housing Disassembly Refer to the parts list and exploded view illustration near the back of this manual 1 Remove the oil level gauge 61 the hex head pipe cap 60 and the pipe nipple 59 from the bearing carrier 55 2 Position the clutch housing on the bench with the input end facing upward Remove the hex head capscrew 64 from the throwout yoke 63 Tap one end of the operating shaft 65 gently to expose one of the woodruff keys 66 Remove the key Do the same for the other side of the shaft to remove the other key Remove the operating shaft from the housing 39 and throwout yoke 3 Turn the power take off housing with attached parts over on the bench Support the housing so the output end of the clutch shaft faces up and is free to rotate There s
50. the splines of the center plate and hub and backplate Install a second driving plate assembly 11 on the center plate and a second center plate assembly 12 Install a third driving plate assembly 11 on the center plate and install the pressure plate 13 on the third driving plate meshing the splines of the center plate and hub and backplate Install the adjusting lock pin spring 27 into the adjusting yoke 17 and install the adjusting lock pin 28 Pull the pin compressing the spring while screwing the adjusting yoke partially onto the threaded part of the hub and back plate Place the sliding sleeve 23 on the adjusting yoke aligning the mounting lugs for the clutch levers on the yoke and sleeve Attach 4 clutch levers 15 with 4 headed lever pins 20 4 cotter pins 18 8 lever links 19 4 headed lever pins 22 and 4 cotter pins 21 to the sliding sleeve 23 Spread the legs of the cotter pins so their ends extend no more than 11 9 mm 47 from the center of the lever pin Hook the levers 15 over the pressure plate flange and secure to the adjusting yoke 17 with 4 lever pins 16 and 4 cotter pins 14 Again spread the legs of the cotter pins so their ends extend no more than 11 9 mm 47 from the center of the lever pin Install the woodruff key 24 in the slot of the sliding sleeve 23 and install the collar ring 25 with the keyway aligned with the woodruff key Install the external snapri
51. to support the weight of the pto Do not apply too much force A CAUTION Lifting devices and their capacity must be capable of supporting the weight of the power take off and all attached devices and equipment Suspend the pto with the lifting devices securely attached at 3 positions minimum so it remains with the main drive shaft in a horizontal position until it is safely lowered and resting on a secure bed 7 Remove the sixteen hex head capscrews securing the power take off to the engine flywheel housing Use two 1 2 13 UNC x 1 1 2 bolts as pusher screws in the two tapped holes provided in the housing flange 39 Use the pusher screws to separate the pto from the engine flywheel housing Remove the power take off from the engine 8 Remove the 6 hex head capscrews securing the drive ring 1 to the engine flywheel Power Take off Service Manual 39 Disassembly Twin Disc Incorporated Clutch Removal and Disassembly 40 Refer to the parts list and exploded view illustration 1 Support the power take off on a bench with the clutch end facing up Use wooden blocks under the power take off Remove the two hex head capscrews 41 and remove the instruction cover plate 40 ifthey were not previously removed Use a 15 16 wrench to remove the jam nut 34 and lockwasher 35 from the hose fitting 36 located in the power take off housing Push the fitting and hose 38 into the power take off housing Use a s
52. w power take offs must have clutch adjustment checked before being placed into service and after the first 10 hours of operation This includes any power take offs with new driving plates New plates have a wear in period and the clutch may require several adjustments before the new plates are worn in After wear in clutch adjustment should be checked regularly Heavy duty applications rock crushers etc which have frequent engagements numerous engagements in an operating day or relatively long periods of slip require more frequent readjustment than light duty applications Adjust the clutch BEFORE it overheats does not pull or the operating lever jumps from the engaged position But these symptoms are indications that clutch adjustment is required Adjustment measurements are made by fitting a torque wrench with 1 1 2 socket over the hex end located at the bottom of the hand lever Grasp only the torque wrench when making measurements 1 Disconnect any power engagement devices from the operating shaft if so equipped To adjust the clutch Refer to the exploded view illustration near the back of this manual 2 Remove the instruction cover plate 40 from the housing 39 and turn the clutch shaft until the adjusting ring lock pin 28 can be reached 3 Disengage the adjusting lock pin and insert a cotter pin or small nail into the hole provided to hold it in the disengaged position Turn the adjusting yoke 17 to the ri

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