Spicer Drive Axles Service Manual Single Axles 2-Speed & Double Reduction - Manual (Page 22)

Pinion Bearing Preload Adjustment
(Trial Build-Up Test).
The pinion bearing spacer thickness controls
bearing preload. The spacer size for
correct preload can be predetermined by
using a "Initial Build-Up" procedure as
described below:
1. Assemble pinion bearing cage, cups and
bearing spacer... (without pinion or oil seal).
See illustration for pacerwasher application.
Use nominal size spacer (see chart).
NOTE: During assembly procedure, center
bearing spacer between the two bearing
cones.
2. Lubricate bearings and place the assembly
in the press. Position sleeve or spacer so
that load is applied directly to the backface
of the outer bearing cone.
3. Apply press load to the assembly (see
chart). Wrap soft wire or strong string around
the bearing cage, attach spring scale and
pull steadily. Preload is correct when torque
required to rotate the pinion bearing cage is
from 10-20 LBS. -IN. (1.1-2.3 N.m). This
specification is translated into spring scale
readings in the chart below.
4. If necessary, adjust pinion bearing
preload by changing the pinion bearing
spacer. A thicker spacer will decrease
preload. A thinner spacer will increase
preload.
22
Section
3
ASSEMBLY / ADJUSTMENT
Drive Axle
Overhaul