Tracker Off-Road 500S Service Manual page 129

Shimming Procedure/Shim Selection
Case-Side Shims (Backlash)
p/n
3307-304
3307-305
3307-306
3307-307
3307-308
Cover-Side Shims (Ring Gear End-Play)
p/n
3306-132
3306-133
3306-134
3306-135
3306-136
3306-137
3306-138
3306-139
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 import-
ant to properly adjust any gear set prior to final assembly.
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 proceed-
ing.
Backlash
NOTE: Always set backlash prior to any other

shimming.
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.
mm in.
1.3 0.051
1.4 0.055
1.5 0.059
1.6 0.063
1.7 0.067
mm in.
1.0 0.039
1.1 0.042
1.2 0.046
1.3 0.051
1.4 0.055
1.5 0.059
1.6 0.063
1.7 0.067
PK208B
3. Install the bearing flange onto the gear case cover
making sure the alignment/locating pin engages the
locating hole in the cover; then make sure the bear-
ing flange is completely seated in the cover.
PK219A
GC033A
4. Install the existing shim or a 0.063 in. shim on the
cover side of the ring gear; then place the assembled
gear case cover onto the gear case and secure with
three cap screws. Tighten evenly using a crisscross
pattern.
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