351
GEARCASE – COUNTER ROTATION
DRIVESHAFT SHIMMING
13
Inspect the bearing housing anode. Replace
anode if it is reduced to two-thirds of original size.
Tighten screws to a torque of 108 to 132 in. lbs.
(12 to 15 N·m).
DRIVESHAFT SHIMMING
IMPORTANT: If new pinion gear is needed,
replace gear set before shimming.
Pinion gear backlash is achieved by using shims
between the driveshaft bearing housing and the
thrust washer. When installing a new thrust bear-
ing or washer, bearing housing, pinion, or drive-
shaft, it is necessary to properly shim the
assembly to restore factory clearance.
Use Driveshaft Shimming Tool, P/N 5005925
(replaces P/N 393185).
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 drive-
shaft. Use Driveshaft Seal Protector, P/N 318674,
when installing or removing the bearing housing.
Lightly coat the threads of the pinion nut with out-
board lubricant and tighten to a torque of 100 to
110 ft. lbs. (136 to 149 N·m).
IMPORTANT: The original pinion nut may be
used for shimming, but must NOT be used in final
assembly.
1. Anode 001220
1
1. Driveshaft bearing housing
2. Thrust washer
3. Thrust bearing
4. Pinion
COA3565
2
4
1
3
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