95
5. Place the Backlash Gauge Tool into the splines of the
ring gear and install a dial indicator making sure it
contacts the gauge at a 90° angle and on the index
mark.
GC070
GC072A
6. Zero the dial indicator; then while holding the pinion
stationary, rock the ring gear assembly forward and
back and record the backlash. Backlash must be
0.011-0.015 in. If backlash is within specifications,
proceed to Ring Gear End-Play. If backlash is not
within specifications, increase shim thickness to
increase backlash or decrease shim thickness to
decrease backlash.
NOTE: Higher backlash settings usually result in
quieter gear operation.
GC071A
Ring Gear End-Play
After correcting backlash, ring gear end-play can be
adjusted. To adjust end-play, use the following proce-
dure.
1. Secure the gear case in a holding fixture with the
cover side up; then install a dial indicator contacting
the ring gear axle flange.
GC065
2. Zero the dial indicator; then push the ring gear
toward the dial indicator and release. End-play
should be 0.004-0.008 in.
3. To increase end-play, decrease the shim thickness.
To decrease end-play, increase the shim thickness.
NOTE: Once proper backlash and end play are estab-
lished, the gear case can be assembled (see Assem-
bling Differential Assembly in this sub-section).
CC888
RING GEAR/THRUST BUTTON
Removing
Remove the thrust button from the gear case cover
(left-hand threads). Account for a shim.
Inspecting
1. Inspect the ring gear for excessive wear or discolor-
ation.
2. Inspect the thrust button for excessive wear or dis-
coloration.
3. Inspect the bearings for discoloration, roughness, or
excessive wear.
Installing/Shimming
NOTE: Ring gear end-play must be adjusted prior to
selecting shim for the thrust button.
1. Install the thrust button with shim into the gear case
cover and tighten securely (left-hand threads).
Manual
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