Spicer Drive Axles Service Manual Wheel Reduction Drive Axles (EA-50) - Manual (Page 16)

Wheel Differential Lock (Optional Equipment)
14
Assembling
1. Assemble head without differential lock
components exactly as the standard “S”
model.
2. Adjust pattern on the head tester using
standard procedures.
3. Install the fixed clutch on the flanged
differential case splined hub and fit the
retaining snap ring.
4. Install the snap ring on the pushrod.
5. Assemble shift fork, spring pin, sliding
clutch, and capscrew.
6. Assemble the pushrod through the carrier,
shift fork assembly, actuator, and return
spring in proper order and orientation per
the assembly drawing.
7. Apply a small amount of RTV sealant to
the shift cylinder flange to serve as a seal
between the shift unit and the carrier.
Install the shift cylinder assembly over the
pushrod orienting the cylinder so that the
breather port is facing up as the axle will
be installed in the vehicle. Compress the
assembly to keep the pushrod piloted in
the carrier. The spring force is higher for
the hydraulic shift than the air shift version
so expect higher forces to compress the
assembly. Tighten the two shift cylinder
mounting screws (longer than those used
on the air shift unit) to 28-35 ft.-lbs.
8. Adjust the shift fork position using the
following procedure:
• Fit a dummy shaft through the sliding
clutch into the differential side gears.
• Place a 0.120 in. feeler gauge between
the tips of the curvic clutch teeth and
slide the shiff fork along the push rod to
set clutch clearance at 0.120 in. as
shown in the illustration
• Tighten shift fork capscrew to 26-30
ft.-lbs.