Spicer Single Drive Axles Service Manual: 34DS, 34RS, 38DS, 38RS, DS340, RS340, DS380, RS380, DS400, RS400, DS3 - Manual (Page 28)

Adjustments
25
Pinion Bearing Preload
Special Instructions
Most late model axles are provided with a “press-fit” outer bearing on the drive pinion. Some of the early model axles use an outer
bearing which slips over the drive pinion. Procedures for adjusting both types of pinion bearing design are contained in this sec-
tion.
Procedure - Adjust Pinion Bearing Preload for Axles with “Press-fit” Outer Pinion Bearings
1. Trial Build-up
Assemble pinion bearing cage, bearings and spacer (without drive pinion or oil seal). Center bearing spacer between two bear-
ing cones.
Note: When new gear set or pinion bearings are used, select nominal size spacer from the specification chart below. If orig-
inal parts are used, use spacer removed during disassembly.
2. With the bearings well lubricated, place the assembly in the press. Position sleeve so that load is applied directly to the back-
face of the outer bearing cone.
Inter
bearing
cone Inter
bearing
cup Bearing
spacer
(variable)
Bearing
cage
Outer
bearing
cup Outer
bearing
cone
Inner
bearing
cone Inner
bearing
cup Bearing
spacer
(variable)
Bearing
cage
Outer
bearing
cup Outer
bearing
cone
Assemble these Parts for
Trial Build-up.
Cage in Press
to Check Bearing
Preload.
Spring
Scale
Press
Ram
Sleeve Must
Apply Pressure
To Back Face
Of Outer
Bearing Cone
Press ram
Sleeve must
apply pressure to
back face of
outer bearing
cone
Spring scale