Rear Seal Installation
Apply Gasket Sealing Compound to metal casings of the seals before installing. Use Seal Installation Tool to install new seals back to back in bearing housing.
Seal Installation Tool:
- P/N 326551
Install inner seal with lip facing toward the bearing housing, then outer seal with lip facing away from the bearing housing.
DR2061 / DR2062
- Inner seal
- Outer seal
Apply Triple-Guard grease to seal lips.
Driveshaft Shimming
If a new pinion gear is needed, replace gear set before shimming.
Pinion gear backlash is adjusted by using shims between the driveshaft bearing housing and the thrust washer. When installing a new thrust bearing or washer, bearing housing, pin ion, or driveshaft, it is necessary to properly shim the assembly to restore the correct clearance.
Use Driveshaft Shimming Kit, P/N 5005925.
Shim gauge bars are precision made and should be handled carefully. The length of each bar is stamped near the part number. This dimension is 0.020 in. (0 .508 mm) shorter than the actual shimmed length of the driveshaft.
IMPORTANT: Clean pinion and driveshaft before assembly. Replace any damaged parts.
Assemble the driveshaft bearing housing, thrust washer, thrust bearing, and pinion onto the driveshaft. Use Driveshaft Seal Protector, P/N 312403, when installing or removing the bearing housing.
Lightly coat the threads of the pinion nut with outboard lubricant and tighten to a torque of 40 to 45 ft. lbs. (54 to 60 N·m).
IMPORTANT: The original pin ion nut may b e used for shimming, but must NOT be used in final assembly.
COA3565
- Driveshaft bearing housing
- Thrust washer
- Thrust bearing
- Pinion
Select correct collar and shim gauge bar from kit:
- Collar: P/N 328363
- Shim gauge bar: P/N 328366
Slide the collar onto the driveshaft with large end in contact with the bearing housing.
Insert the assembled driveshaft into the tool base and tighten p reload screw against the driveshaft until groove on the spring-loaded plunger is flush with end of threads. Tighten locking ring on preload screw.
COA3566 / DSC00326
- Collar
- Tool base
- Groove
Rotate the driveshaft several revolutions to seat bearings.
Lay the tool base on its side. Place the shim gauge bar against guide pins of the tool base.
005416
- Shim gauge bar
Check squareness of the bearing housing mounting surface by holding the shim gauge bar against the pinion while rotating just the bearing housing. Use a feeler gauge to measure clearance between the gauge bar and the bearing ho using between each p air of screw hole s. Re place the bearing housing a nd rep eat check if variance is greater than 0.004 in. (0.010 mm).
Check squareness of the pinion to the driveshaft. Hold the shim gauge bar against the bearing housing (between the screw holes) while rotating just the driveshaft and pinion assembly. Measure clearance between the gauge bar a nd the pinion at several location s. If variance is greater than 0.002 in. (0.0 50 mm) replace the pinion or driveshaft, as necessary, and repeat check.
Subtract the average clearance measurement from 0.020 in. (0.508 mm) to determine the correct shim thickness required. Select the fewest number of shims to achieve the correct thickness.
Remove the driveshaft from the tool and add the required shims be tween the b earing housing and the thrust washer.
IMPORTANT: Use extreme care when removing bearing housing to avoid damaging the seals. Use Driveshaft Seal Protector, P/N 312403.
Check clearance a gain. The measurement between the gauge bar and pinion should be 0.020 in. (0.508 mm).
005417
Remove the nut and pinion from the driveshaft. Discard the nut.
