Propeller Shaft - Hansen Web Design
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1. Splined stub Slip yoke Alignment arrows A 22023 Fig 6 peller shaft and slip yoke indicate the correct position for assembly THESE ARROWS MUST MATCH Fig 6 Disassembling Type CR CRS Joints Disassemble propeller shaft joint using follow ing procedure Remove the propeller shaft from the truck by taking out four capscrews at each end holding the flange type bearings to the fitting yokes being careful not to let the flanged bearings fall off and permit foreign matter to enter the rollers Clamp the propeller shaft in a vise and remove the flange bearings two at each end The remaining bearings are cylindrical in shape and fit into bore in the yoke arms There are snap rings fitting in grooves of the bearings which locate them on the inside of the yoke arms These snap rings can be removed as shown in Fig 7 by means of a punch placed against an end of the snap ring loop and then tapping the end of the punch with a hammer until the ring comes off the bearing After all of the snap rings have been removed the assembly can be placed on parallels or ina vise as shown in Fig 8 with the trunnions of the cross resting on parallels on the vise jaws and the yoke mem bers suspended By striking the suspended yoke as shown the yoke member will be driven down until it comes in contact with the cross This will leave the bearing protruding as shown After one of the bearings has been driven out in this way the2. A E Make sure the reservoirs in each trunnion are filled With the rollers in the race fill the race about 1 3 full Lubrication Slip Yokes and Joints Propeller shaft slip yokes are to be lubricated every 3 000 to 5 000 miles Use viscous chassis lubricant or SAE 140 gear oil Remove the pipe plug and inject lubricant Replace the pipe plug The universal joints are lubricated every 15 000 to 20 000 miles using a viscous lubricant or SAE 140 gear oil Remove pipe plug and inject lubricant using a low pressure grease gun Re place pipe plug Donated by John amp Susan Hansen For Personal Use Only L LINE MOTOR TRUCK SERVICE MANUAL PROPELLER SHAFT Section A Page 7 PROPELLER SHAFT CENTER BEARINGS Bracket Slingers ot 3 Dust shield Seal Lubricator Seal Slip joint N EA Bearing seal shield a P Da Sealed type Rubber ring bearing A 22021 Fig 20 Pre lubricated center bearing Construction Pre Lubricated Type Bearing The center bearing used on the L 110 to L 150 trucks is the pre lubricated single row ball bearing type The bearing is permanently sealed against water or dirt entering into bearing to cause rapid wear The center bearing is still further protected from dirt and water by three slingers and a dust shield forming an integral part of the center bearing assembly The flexibility of the mounting protects the bearing from all misaligning forces caused by unevenne
3. Personal Use Only AN PROPELLER SHAFT Section A L LINE MOTOR TRUCK SERVICE MANUAL Page 4 After the first snap ring is in place the assembly should be turned over as shown in Fig 12 having the one assembled snap ring at the bottom and resting the yoke on the flat iron surface then striking the bearing on the top driving the upper bearing down which carries the lower bearing with it until the snap ring rests securely against the milled surface of the yoke fork After this is done put in the opposite snap ring and the joint is ready for service Fig 9 the open end comes flush with the inside of the yoke fork Insert the cross through the opposite hole without the bearings and swing in place and down into the partially assembled bearings Turn the assembly over resting the above partially assembled bearing on the flat surface and drive in the other bearing Fig 10 A 22631 Fig 10 By continuing to tap the bearings they will both find their seats against the ends of the trun nions and will come approximately flush with the outside of the yoke After this is done it is possible that there will be some off center condition between the cross E and the yoke This is an advantage because TON it permits driving in the snap ring onthe side that gives the most clearance This is shown in Fig 11 A 22632 Fig 12 Donated by John amp Susan Hansen For Personal Use Only PROPE
4. end of shaft Fig 26 NOTE Make certain that the pulling pressure is exerted on the bearing inner race or cone if the bearing is to be reused The bearing is prelubricated lubricated at factory and no further lubri cation is necessary If the sealing parts Fig 27are damaged during the removal or replacing operation the bearing is apt to fail because of loss of lubricant 8 Remove rubber ring from bearing Fig 27 When replacing bearing and rubber ring in housing apply thin coating of soap solution to ring to permit easy entry of rubber ring into housing The bearing is a press fit on the shaft Use a short length of tube or pipe slightly larger on its ID than the propeller shaft spline diameter for pressing on the slinger bearing and rubber ring assembly and outer slinger Rubber ring and bearing A 22520 Rubber ring A 22514 Fig 27 Reassembling Pre Lubricated Type Bearing Reassembling procedure is the reverse of the foregoing disassembling operations Construction Not Pre Lubricated Type Bearing Figs 28 29 and 30 illustrate the construction details of the center bearing assembly as used on L 160 trucks and up The center bearing is constructed having a double row tapered roller bearing operating in a special housing in which lubricant channels have been incorporated to assure a continuous flow of lubricant to the bearing The assembly is amply provided with shields and slingers to
5. lon wna Joes 11 Engine mountingS o UA ade je E REE 11 LUbDTIG ATION see aa GW le ee ARA E Ga E Acs Bo oO al ass 11 Step by step procedure for checking TERRE beeni a Ge A e ew 11 12 PRINTED IN UNITED STATES OF AMERICA Donated by John amp Susan Hansen For Personal Use Only PROPELLER PROPELLER SHAFTS AND UNIVERSAL JOINTS The propeller shafts are of tubular construction having splined slip yokes and universal joints with steel roller bearings Front propeller shafts have fixed joints while rear propeller shafts have the slip yoke which allows for vari ations in distance between rear axle and trans mission or center bearing Universal joints used on L Line trucks are of several types and sizes and are illustrated below C TYPE BEARINGS C TYPE BEARINGS A 16104 Fig Illustration shows details of the C type universal joint With this type joint the four bearings on the journal or cross are alike R TYPE BEARING Fig 2 Showing details of the CR type joint In this type joint one pair of bear ings is of the C type while the opposite pair of bearings is of the R type PRINTED IN UNITED STATES OF AMERICA Donated by John amp Susan Hansen For Personal Use Only L LINE MOTOR TRUCK SERVICE MANUAL PROPELLER SHAFT Section A Page l SHAFT CS TYPE TRUNNION BEARING Fig 3 Showing details of the CS type A 18101 joint O
6. prevent the entrance ofdirt and water and the entire assembly is mounted in a rubber ring to provide insulation from the frame ell Frame crossmember Rubber Grease retainer Dirt slinger Tapered roller bearings A 23452 Fig 28 Center bearing usedonL 160 Series Dust shield FRAME CROSSMEMBER GREASE RETAINERS INSULATOR SPACER SLINGER HOUSING DUST e SHIELD TAPERED ROLLER BEARINGS A 9176 Fig 29 Center bearing used on L 170 L 180 Series FELT FRAME yi SEALS CROSSMEMBER ES PE WATER A D DIRT TAPERED SLINGER ROLLER BEARINGS 4 8 2353 Fig 30 Center bearing used on L 190 L 200 Series PRINTED IN UNITED STATES OF AMERICA Donated by John amp Susan Hansen For Personal Use Only L LINE MOTOR TRUCK SERVICE MANUAL PROPELLER SHAFT Section A Page 9 Installation Not Pre Lubricated Type Bearing Because of accuracy in manufacture this bear ing has the proper roller contact and specified end clearance Always installa complete bearing rather than separate parts The Service Parts department will supply only the complete bearing Make a bench assembly of the bearing housing and seals then install this assembly as a unit Note that the bearing must be a sliding fit in the housing and that the seals are installed with the rolled edge of the seal to the inside of the housing Install housing and bearing assembly having all nuts h
7. taching to the propeller shaft yoke and slip yoke Sometimes due to the air lockin the bearings not having been entirely eliminated by compressing the bearings it is necessary to tap the ends of the bearings lightly with a hammer This will relieve the air lock and permit the assembly of the bearings to the yoke without further difficulty When the key or lug Fig 1 of a bearing is seated properly in the keyway of the yoke the entire face of the bearing will be flat on the face of the yoke Be sure the entire face of each bearing is flush with the face of the yoke before inserting the capscrews A single lock plate is used for locking each set of two screws The screws are to be assembled in the holes of the lock plates before they are inserted in the yoke screw holes After the screws have been drawn up as tightly as possible one of the two projecting lips at each end of the lock plate is to be turned up tightly against a flat side of the lock head It is very important that each screw be securely locked It is necessary to have perfect alignment of the front and rear joints Therefore if either the slip yoke or propeller shaft has been re placed be sure when assembling these two items that the bearing keyway of the slip yoke is in alignment with the bearing keyway of the pro peller shaft yoke Due to the design and construction of the drive shaft and universal joint assembly the replace ment of any part or parts can be a
8. to a joint Unless the propeller shaft or the slip yoke is to be replaced it is best not to disassemble these two parts They are balanced in the position in which they are found and should remain in that position When a bearing is removed from the spider the cork packing washer usually comes off with and remains in the bearing If the joint has given considerable service the cork packing washers should be removed from the bearing and replaced Reassembling Type C Joint All parts should be thoroughly cleaned before they are reassembled and each bearing should be packed with a small amount of clean lubri cant Use a high grade lightweight semi fluid chassis lubricant Before assembling the bearings to the spider be sure the four dust shields are in place on the shoulders of the journals of the spider Placea new cork packing washer on each journal and push it up to the shoulder Then place the bearing on the journal Because new cork packing washers are used and also because a possible air lock is in the bearings it is necessary to compress the bear ings in order to get them in the proper location for assembling to the yokes and fittings After opposite bearings have been compressed as much as possible a tie wire is to be used to keep them in the compressed position When all four bearings have been compressed tightly in place on each of the two spiders these spider and bearing assemblies are then ready for at
9. Donated by John amp Susan Hansen For Personal Use Only MINA PROPELLER SHAFT L LINE MOTOR TRUCK SERVICE MANUAL Index V Page l PROPELLER SHAFT GROUP INDEX Page GENERAD dosis nps ea tper iki A A A eee BM eas do Pa es 1 DISASSEMBLY AND REASSEMBLY OF UNIVERSAL JOINTS Cleaning and inspecti0N o o e is a RE aa 6 Lubrication oe Se A OE Se te ee a a ew e ai 6 Type CG castas a a e a Re E A O a ose ae tate cee ce Ge 1 2 Type GOM CRS aa Gite ae eee aw a a ww eS ee E ae eee A rere ace 3 4 Type 1410 Spic r iaa aS ole aya ae ee a A A RS EA A A a 5 6 CENTER BEARINGS PRE LUBRICATED TYPE Construction se sses cererii E EE E E T Gece rains EE E A ere E etn we ee 7 Disassembly sa ts aaa eee ewe cm h aiea ai a ad a da 7 8 Reassemibl ys saa eea E he ee wee er ce EE areca eS esas E ee a ee 8 CENTER BEARINGS NOT PRE LUBRICATED TYPE Adjustment o o A A eee ae gk ee da AN AA 9 10 Construction sea da ra Ta a TS a os a ae ee 8 9 Housing assembly felt seal replacement AR A RA Sw 10 Installations ricos mii AA AA Aa 19 Lubricati M ates E AA A a A RO ees Se oe 10 Replacement on Shaft ovinos a ee Oe ee ee 10 PROPELLER SHAFT VIBRATION DRIVE LINE Center bearing ee AAA 11 Clutch and flywheels nce cee Oe RE RENT a HS See ee 11 Companion flangeS ooo o ooooo ooo ooo osas oa rw ewe sis 11 Correct alignment oo ooo ooooooooooooooooo os dE a or
10. LLER SHAFT L LINE MOTOR TRUCK SERVICE MANUAL Section A Page 5 a Disassembling Type 1410 Spicer Joint Remove oil seal retainer from end of slip joint and remove slip joint assembly from shaft When replacing slip joint make cer tain that arrows on shaft and joint are in line Fig 13 Place joint assembly in vise using soft jaws to protect the joint threads Remove needle bearing assembly from journal or cross Fig 14 Using a small punch tap end of needle bear ing assembly to loosen snap ring Move needle bearing only enough to break bearing assembly away from snap ring Fig 15 Remove snap ring from slip joint or yoke Turn joint over and remove opposite snap ring Fig 16 Tap needle bearing until opposite needle bearing is free of yoke using a soft round drift brass with flat face about 1 32 small er than the diameter of the hole in the yoke to prevent damage to the bearing Fig 17 A Slip joint Seal retainer Reassemble with arrows in line A 22718 Fig 13 Es Needle bearing 4 22516 Fig 14 PRINTED IN UNITED STATES OF AMERICA A 22500 A 22519 Drift brass Needle Bearing Fig 17 Donated by John amp Susan Hansen For Personal Use Only PROPELLER SHAFT LS MA ia A L LINE MOTOR TRUCK SERVICE MANUAL age f Turn yoke or joint over and tap on exposed Cleaning and Inspection end of journal or cro
11. al of band as close to clamp as possible See Fig 37 Then road test the truck or spin the drive line then by moving the weight to various locations on the shaft find the point of least vibration Then increase or decrease the weight at this point to obtain as perfect a balance as possible Mark location of weight on shaft remove hose clamp and weight Weigh the weight and add 3 8 of an ounce for clamp screw and nut Select a piece of steel of this total weight and tack weld to propeller shaft at locating mark Hold weld material to a minimum CAUTION When attaching loose weights to propeller shaft with hose clamps when checking for vibration make sure that weights are clamped se curely to shaft to avoid hazard of weights flying off
12. and tight Permit the engine to drive the propeller shaft at a low idle speed to per mit the bearing housing and rubber ring to center themselves in the carrier Tighten all mounting nuts i Adjustment Not Pre Lubricated Type Bearing Prior to reinstalling a roller bearing of this type it should be checked for wear or end play a Place the bearing assembly in a vise and mount an indicator as shown in Fig 31 First spin the bearing in order to center the races and then immediately check for end play by moving cup toward the indicator as shown Two or three checks should be made to definitely establish amount of end play present End play should be from 005 to 008 and corrections should be made if amount is in excess of 008 A 22948 Fig 31 b Where indicator shows end play to exceed 008 the bearing should be disassembled thoroughly cleaned and the cone spacer measured with a micrometer as shown in Fig 32 C Reduce the cone spacer thickness the re quired amount indicator reading less 005 through the use of emery cloth ona smooth surface moving the spacer ina circular motion See Fig 33 d Reassemble bearing and recheck results See Fig 34 Donated by John amp Susan Hansen For Personal Use Only PROPELLER SHAFT l AN MA ain A L LINE MOTOR TRUCK SERVICE MANUAL age YN 4 Center Bearing Lubrication The lubricant recommended for the center b
13. ccomplished without special tools or garage equipment Re placements can be made without removing the propeller shaft assembly from the chassis If a failure occurs in the rear joints the bearing capscrews can be removed and the propeller shaft pushed forward in the slip yoke thereby disengaging the bearings from both the propeller shaft yoke and the pinion shaft yoke The re assembling of the joint is no more difficult then disassembling Less difficulty will be ex perienced in the reassembly if the bearings are assembled to the propeller shaft yoke first The same procedure is to be followed in dis assembling replacing parts and reassembling the front slip joint the only difference being that the slip yoke is pushed back on the propeller shaft The best results will be obtained in the reassembly of this joint if the bearings are first assembled to the slip yoke If the slip yoke or propeller shaft has been damaged and must be replaced these two parts can be disassembled merely by removing the slip yoke grease retainer or cap In such in stances it is necessary to be very careful when reassembling the shaft and slip yoke that the bearing drive lugs of the slip yoke are directly in line with the bearing drive lugs of the pro peller shaft yoke Arrows stamped on the pro Donated by John amp Susan Hansen For Personal Use Only Af p f L LINE MOTOR TRUCK SERVICE MANUAL PROPELLER SHAFT Section A Page 3
14. complete assembly should be turned over and the same operation repeated to drive the opposite bearing out part way This leaves both bearings protruding from the yoke The next operation is to clamp the end of a pro truding bearing in a vise as shown in Fig 9 and then proceed to strike the yoke member until the bearing is completely released from its snug fit in the yoke Turn the assembly around clamp the other bearing in the vise in the same manner as before and drive yoke member from PRINTED IN UNITED STATES OF AMERICA the bearing The cross member then can be removed from the yoke without any difficulty Should any of the working parts be worn they should be renewed with a new cross and four complete bearing assemblies In handling these parts be sure that the trunnions of the cross are clean and that no dirt gets into the bearings be fore they are assembled into the joint It is always advisable to replace the old cork sealing washers on each of the trunnions which serve to prevent the ingress of dirt and retain the lubricant in the bearing units Reassembling Type CR CRS Joints Before assembling the bearings be sure that there is lubricant in each one then proceed as follows Rest one of the yoke forks on a flat piece of iron leaving the other fork member freely suspended below then drive one of the bearings in so that 4 22630 Fig 7 A 1612 Fig 8 Donated by John amp Susan Hansen For
15. ear ing is a medium short fibre wheel bearing grease the technical specifications of which are a cold milled sodium soap type not cal cium having a work penetration consistency of 250 maximum and which will not work down below 300 The center bearing should be lubricated every 500 to 1000 miles Center Bearing Replacement on Shaft Motor Truck Service Bulletin No 25 1941 de scribes in detail the advisability of testing center bearing installation for interference between the bearing and the fillet on the pro peller shaft Interference at this point will cause early failure of the bearing Center Bearing Housing Assembly Felt Seal Replacement When replacing felt seals in the center bearing housing assembly they should be tested for fit on the propeller shaft as shown in Fig 35 A break away tension of from two to eight pounds is considered satisfactory for a dry seal and Shaft not oiled A i A Donated by John amp Susan Hansen For Personal Use Only IMA PROPELLER SHAFT L LINE MOTOR TRUCK SERVICE MANUAL oe A VY age PROPELLER SHAFT OR DRIVE LINE VIBRATION Where drive line vibration is experienced it will be necessary to inspect the following units as outlined below before any attempt is made to balance the propeller shafts as described under the heading Step by Step Procedure for Checking Drive Line Vibration COMPANION FLANGES The companion flange mounting nuts and the bol
16. ecrease this weight at that point to obtain as nearly as perfecta balance as possible Weigh the glazer s putty or magnetic weight and install a piece of steel of the same weight in the same location by tack welding weight to inside of brake flange Hold weld material to a minimum For truck without a brake drum at the center bearing use an adjustable hose clamp anda small metal weight approximately 1 2 ounce Clamp the weight to the rear shaft near the center bearing and cut off excess material of band as close to clamp as possible See Fig 37 Then road test truck or spin drive line then by moving the weight to various locations on the shaft find the point of least vibration Then increase or decrease the weight at this point to obtain as perfect a balance as possible Mark location of weight on shaft remove hose clamp and weight Weigh the weight and add 3 8 of an ounce for clamp screw and nut Select a piece of steel of this total weight and tack weld to propeller shaft at locating mark Hold weld material to a minimum Cut off excess material of band as close to clamp as possible Position weight under hose clamp below clamp screw Place hose clamp and weight as close to stub end of shaft as possible A 22905 Fig 37 For trucks with a single propeller shaft use an adjustable hose clamp and a small weight approximately 1 2 ounce clamp the weight to the front end of the shaft and cut off excess materi
17. g bolts Should the center bearing insulator be deteriorated or oil soaked it should be replaced Loose mount ing bolts or an oil soaked or deteriorated in sulator can cause excessive vibration ENGINE MOUNTINGS Tighten the engine mount ing bolts Should the engine mountings be oil soaked or deteriorated they should be re placed Loose mounting bolts or oil soaked or deteriorated mountings can cause excessive vibration CLUTCH AND FLYWHEEL The light side of the flywheel is stamped with a letter L and should be lined up with the arrow or inspection mark usually a white dab or paint stamped on the heavy side of clutch If no arrow is stamped on clutch it can be assembled to the flywheel in any position If these markings are not lined up excessive vibration can result PRINTED IN UNITED STATES OF AMERICA Step By Step Procedure For Checking Drive Line Vibration Start engine and with clutch disengaged and transmission in gear to keep the clutch disc from spinning bring engine speed up slowly to governed speed to determine if vibration is in engine itself or due to an out of balance clutch pressure plate assembly If only normal vibra tion is evident disconnect the front prapeller shaft at the transmission companion flange and with transmission in direct drive and clutch engaged slowly bring engine speed to governed speed to determine if vibration is caused by an out of balance clutch disc or out of balance tra
18. n this type joint the C type bear ings are secured by means of straps or lock Plates Snap ring Journal or cross A 22515 Fig 4 Spicer propeller shaft joint Disassembling Type C Joint To take a joint and shaft assembly out of a chassis it is necessary only to remove eight capscrews the four screws that hold the two bearings to the transmission fitting whether it be fitting yoke or brake flange fitting or the center joint fitting on a long wheelbase chassis and the four screws that hold the two bearings to the pinion shaft fitting Fig 5 To disengage the bearings from the end fittings compress the slip joint Care must be taken to prevent the bearings from falling off the journals of the spider when they have been disengaged from the fitting yokes It is a good idea to tie the bearings together in place on the spider while the other bearings are Donated by John amp Susan Hansen For Personal Use Only PROPELLER SHAFT Section A Page 2 L LINE MOTOR TRUCK SERVICE MANUAL AAA Propeller shaft Journal Cap screws Flange type bearing A 22022 Fig 5 being disengaged from the slip yoke and pro peller shaft yoke This precaution should be taken to eliminate the possibility of dirt or other foreign matter from entering the bearings provided they are to be used again It requires but very little dirt or other foreign matter ina bearing to cause considerable damage
19. nsmission gears If both the above checks show only normal vibra tion connect the front propeller shaft and use the following step by step procedure in balancing the drive line assembly Drive line vibration can be checked by road test ing truck spinning the drive line with truck up on jacks or by pulling the rear axle shafts and spinning the drive line Before any balance weights are added to brake drum or propeller shafts disconnect the rear propeller shaft at center bearing and rotate shaft 180 in relation to companion flange truck without center bearing rotate shaft at trans mission reconnect shaft then road test truck or spin drive line and check for vibration Heavy side of drum Place weight in brake drum E flange opposite heavy side of drum i A 22906 Fig 36 If vibration is still present after above changes on truck with brake drum at center bearing place a lump of glazer s putty weighing approxi mately one half ounce at brake drum flanges See Fig 36 A small magnet can be used in brake drum flange in place of the putty 1 2 ounce magnet can be obtained by removing the magnet from a magnetic drain plug then road Donated by John amp Susan Hansen For Personal Use Only AMA N PROPELLER SHAFT Section A L LINE MOTOR TRUCK SERVICE MANUAL Page 12 test truck or spin drive line and by changing location of the weight find the point of least vibration Then increase or d
20. ss end to remove re i maining needle bearing Fig 18 l CLEAN ALL PARTS Use a suitable clean ing fluid Allow the parts to remain in the cleaner for some time to loosen up any particles of grease or foreign matter Remove any burrs or rough spots from any machined surfaces g Remove journal cross from yoke Tip cross as shown in Fig 19 and lift out of yoke 2 NEEDLE BEARING Do not disassemble Clean with short stiff brush and blow out with compressed air Work a small quantity of lubricant 140 S A E Oil into each needle bearing and turn the needle bearing on the trunnion to check wear Replace if worn Journal 3 JOURNAL CROSS Because worn needle bearings used with a new journal cross or new needle bearings used with a worn journal cross will wear more rapidly making another replacement necessary in a short time always replace the journal cross and four needle bearings as a unit Needle Bearing y 4 JOURNAL AND BEARING KIT To facilitate Fig 18 the replacement of journals and bearings a journal and bearing kit is available The use of the kit insures having the correct individual parts when required and saves valuable time Journal Fig 19 Reassembling Type 1410 Spicer Joint Reassembling is merely a reversal of the fore going disassembling operations On joints with out a lubrication fitting repack reservoirs in the journal cross ends with a good grade of semi fluid lubricant 140 S
21. ss of the road and results in the lowest possible bearing resistance a minimum loss of power and a distinct reduction in drive line noises Disassembling Pre Lubricated Type Bearing The prelubricated type center bearing can be serviced without removing the propeller shaft from the truck although a much more satis factory job can be performed by removing the shaft and center bearing assembly from the vehicle The following illustrations show ser vicing procedure with the shaft removed Dis assemble the bearing as follows a Remove retainer rivets from each side of rear dust shield Fig 21 b Use a broad nose chisel to remove rear dust shield Fig 22 c Remove clamp bolt from rear dust shield assembly Fig 23 d Carefully bend open rear dust shield as sembly only enough to remove from the housing and shaft Fig 24 e Apply puller to strap or bracket edge of bearing housing pull housing and bracket assembly from rubber ring Fig 25 PRINTED IN UNITED STATES OF AMERICA Dust shield A 22499 Dust shield A 22518 Fig 22 Dust shield Clamp bolt A 22501 Fig 23 Donated by John amp Susan Hansen For Personal Use Only PROPELLER SHAFT Section A Page 8 L LINE MOTOR TRUCK SERVICE MANUAL Housing A 22517 A 22513 Bracket edge Fig 25 f Place puller plates between slinger and rear of bearing and pull bearing with rubber ring and rear slinger from
22. ts that attach the shaft to the flange must be tight to assure drive line balance The least degree of looseness in the flange mounting nuts or the shaft attaching bolts is enough to cause excessive out of balance vibration at high propeller shaft speeds Where the flange also maintains the adjustment on the rear axle pinion bearings or propeller shaft center bearings this adjustment is de stroyed because of lack of torque on the nut When a companion flange is removed froma transmission center bearing or rear axle the flange and shaft should be marked so that the flange can be reinstalled in the same position on the shaft Care should be exercised in the removal or replacement of companion flanges as rough handling such as hammering on the trunnion mounting may bend or distort flange CORRECT ALIGNMENT Correct alignment of the universal joints is imperative to efficient torque transmission at high speeds To assure parallel alignment of the universal joints arrows are stamped on the shaft end and on the slip yoke These arrows must be lined up see Fig 6 LUBRICATION When a propeller shaft has been removed froma chassis proper lubrication is an important part in the re installation opera tion Be sure to work a small quantity of lubri cant SAE 140Gear Oil into the roller assem blies and make certain that the slip joint splines are also properly lubricated CENTER BEARING Tighten propeller shaft center bearing mountin
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