Wheel differental lock ser vice procedure, Procedure – Spicer Single Drive Axles Service Manual: Single Reduction & Single Reduction with Differential Lock User Manual

Page 43

Wheel Differental lock

Ser
vice Procedure

Install and Adjust Differential Lock - Type 2 Axles

Note: With differential carrier completely assembled and

adjusted, install differential lock as follows:

Procedure -

Install fixed curvic clutch on splined hub of flanged
differential case, then install snap ring.

If shift fork and sliding curvic clutch are disassem-
bled, engage fork with clutch hub, and install spring
pin in the long leg of the fork. See illustration for fork
mounting position on clutch.

Position compression spring, shift fork and clutch
assembly in shift opening of the carrier. Align pilot
hole of shift fork with pilot hole of carrier. Install
pushrod, engaging shift fork head and compression
spring in carrier.

Note: The shift cylinder is serviced only as an assembly. How-

ever, if the cylinder is disassembled and parts are ser-
viceable, assemble as described in Steps 4 and 5.

Install new O-ring on piston.

Lubricate piston and O-ring with silicone grease and
install piston assembly in cylinder. Position piston
with small diameter hub toward closed end of cylin-
der.

Screw piston driver on pushrod.

Tighten piston driver until shift fork clutch is approx-
imately .030 of an inch from the fixed clutch.

Push down by hand on the piston driver, both
clutches must be completely engaged.

Install set screw in piston driver and torque to 12-15
lbs.ft. (16-20 N•m).

10. Trial fit, install piston cover assembly. Hand tighten

cap screws.

11. Screw in manual engagement screw by hand

approximately 1 inch or until snug fit (light resis-
tance pressure is felt). Both clutches must be com-
pletely engaged.

12. Remove manual engagement screw clutches until

completely disengaged.

•

Repeat above procedure if clutches are not
completely disengaged.

Note: Fork adjustment is correct when curvic clutch teeth are

fully engaged with the fork free when moved by hand.
When air pressure is released or the manual bolt is
removed, the shift assembly should disengage freely.

13. When adjustment is complete, torque fasteners to

28-35 lbs.ft. (38-47 N•m).

Sliding

clutch

Clutch

fork

Insert

spring

here

Spring

Pushrod

Piston

driver

Setscrew

Piston

O-ring

Switch

Manual

engagement

screw

Capscrew

Washer

Gasket