Backlash; Shimming Procedure/Shim Selection - Arctic Cat 450 XC 2011 Service Manual

7. Secure the pinion gear in a bearing puller; then
remove the pinion bearing using a press. Account for
a collar and a bearing.
 NOTE: If gears are being replaced, use the existing
shims.
 NOTE: If the gear case housing is being replaced,
proceed to the following Shimming Procedure/Shim
Selection sub-section.

Shimming Procedure/Shim Selection

Shims
p/n mm
0402-405
0402-406
0402-407
0402-408
0402-409
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.
CC878
CC879
in.
1.3 0.051
1.4 0.055
1.5 0.059
1.6 0.063
1.7 0.067
Manual
Table of Contents

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.
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.
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.
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.
GC031A
GC059A
GC059B
97