Spicer Tandem Drive Axles Service Manual D170, D190, and D590 Series - Manual (Page 45)

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Wheel Differential
Install Wheel Differential Assembly - Forward Carrier Assembly
Backlash and Bearing Preload
Note: To install the wheel differential assembly, properly
setup the gear pattern and set the differential bearing
preload. This will require the use of the following Spicer
tools or equivalent. These tools will allow you to align
the bearing adjuster assembly to the carrier. This tool
(part number 513061) will also gage the adjustment for
the differential bearing preload and assist in setting the
backlash. Below you will find detailed instructions
explaining each procedure.
1. The bearing adjustment tool is made up of a threaded
rod, two nuts, two washers and two adjustment plates.
Fit one adjustment plate to the plain half threaded cup.
Fit the other adjustment plate to the flange half cup.
The adjustment rings will fit into slots of the threaded
bearing cups stamped adjustment ring.
2. Connect the adjuster plates using the threaded rod,
washers and nuts. Tighten the nuts on the rod to
hold the threaded cups in place. Carefully lower the
wheel differential and ring gear assembly into the
carrier.
Note: There are two ways to make sure that the threaded cups
are seated properly. If there is a misalignment, reinstall
the differential assembly at a slightly different angle.
3. Make sure there is no gap between the carrier
threads and the cup threads.
1
1 - Threaded bearing cup
2 - Adjustment plate
2
1
1 - No gap
Wheel Differential