131
GC044
4. Install the pinion gear assembly into the housing.
Using the 48 mm Internal Hex Socket, secure the
pinion gear assembly with the existing lock collar.
Tighten to 125 ft-lb.
NOTE: On a front differential, the lock collar has
right-hand threads. On a rear drive gear case, the
lock collar has left-hand threads or a snap-ring.
CC890
5. Place a punch on the edge of the lock collar in the oil
gallery area; then using a hammer, stake the lock col-
lar to ensure that the collar will remain securely
tightened.
CC891
Shimming Procedure/Shim
Selection
It is very important to adjust bevel gears for the proper
running tolerances. Gear life and gear noise are greatly
affected by these tolerances; therefore, it is very impor-
tant to properly adjust any gear set prior to final assem-
bly.
The following procedure can be used on both front differ-
ential or rear drive gear case.
NOTE: All bearings must be installed in the gear
case and the pinion properly installed before pro-
ceeding.
Backlash
NOTE: Always set backlash prior to any other shim-
ming.
1. Install the existing shim or a 0.051-0.055-in. shim on
the gear case side of the ring gear assembly.
GC031A
2. Install the ring gear with shim in the gear case; then
while holding the pinion stationary, rock the ring
gear forward and back to determine if any backlash
exists. If no backlash exists, install a thicker shim
and recheck.
Case-Side Shims (Backlash)
p/n
mm
in.
0402-405
1.3
0.051
0402-406
1.4
0.055
0402-407
1.5
0.059
0402-408
1.6
0.063
0402-409
1.7
0.067
Cover-Side Shims (Ring Gear End-Play)
p/n
mm
in.
1402-074
1.3
0.051
1402-075
1.4
0.055
1402-076
1.5
0.059
1402-077
1.6
0.063
1402-078
1.7
0.067
