294
GEARCASE – STANDARD ROTATION
DRIVESHAFT SHIMMING
“O”, “L2”, AND “M2” TYPE GEARCASES
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.
ALL GEARCASES
Select collar, P/N 341440, and the correct shim
gauge bar:
• “M2”: Shim gauge bar, P/N 349957
• “L2”: Shim gauge bar, P/N 328367
• “O”: Shim gauge bar, P/N 328367
• “S2”: Shim gauge bar, P/N 328367
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 preload screw against the driveshaft
until groove on the spring-loaded plunger is flush
with end of threads. Tighten locking ring on pre-
load screw.
Rotate the driveshaft several revolutions to seat
bearings.
Lay the tool base on its side. Position the shim
gauge bar against guide pins of the tool base.
Check squareness of the bearing housing mount-
ing surface by holding the shim gauge bar against
the pinion while rotating just the bearing hous-
ing. Use a feeler gauge to measure clearance
between the gauge bar and the bearing housing
between each pair of screw holes. Replace the
bearing housing and repeat check if variance is
greater than 0.004 in. (0.101 mm).
1. Driveshaft bearing housing
2. Thrust washer
3. Thrust bearing
4. Pinion
COA3565
1. “S2” Type Gearcase - pinion shimming bolt
2. “O”, “L”, “L2”, “M” and “M2”, Type Gearcases -
pinion nut
3. Collar
4. Tool base
5. Groove
COA3566
DSC00326
005415
1. Shim gauge bar 005416
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