Spicer Tandem Drive Axles Service Manual D170, D190, and D590 Series - Manual (Page 32)

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Drive Pinion
Drive Pinion Overhaul and Assembly - Forward and Rear Carrier Assembly
The preload of the bearings on the drive pinion is adjusted by
a spacer between the inner and outer bearing cones and the
helical gear. The preload is adjusted by changing the thick-
ness of the spacer. A thicker spacer will decrease the preload,
a thinner spacer will increase the bearing preload.
The following procedure covers both the forward and rear axle
carrier overhaul and assembly.
Note: See carrier disassembly for instructions on pinion and
yoke removal.
1. If the model of axle uses a pilot bearing, remove the
bearing using a split-type puller. Use two procedure
steps to remove each bearing.
a. Mount the puller vertically to separate the
bearing from the pinion. This action will force
the puller halves behind the bearing race and
start moving the bearing from the pinion.
b. Mount the puller horizontally to press the
bearing from the pinion.
2. Remove the inner pinion bearing cone from the pin-
ion using a split-type puller. Use two procedure
steps to remove each bearing.
a. Mount the puller vertically to separate the
bearing from the pinion. This action will force
the puller halves behind the bearing race and
start moving the bearing from the pinion.
b. Mount the puller horizontally to press the
bearing from the pinion.
1
1 - Press