Arctic Cat 500 Service Manual page 229

 NOTE: The spider and ring gear assembly must be
replaced as a complete unit.
3. Assemble the fork and sliding collar into the cover
assembly; then install the left bearing flange/bearing
assembly and seat firmly into the cover.
4. Apply a liberal coat of grease to the O-ring; then
install it on the assembled cover assembly making
sure to seat the O-ring completely down around the
circumference of the bearing flange.
GC036B
5. Making sure the O-ring is properly positioned on the
differential housing cover assembly, install the cover
with existing cap screws (coated with green Loctite
#609). Account for the ID tag. Tighten the cap
screws evenly to 23 ft-lb.
 NOTE: Grease can be applied to the O-ring for ease
of assembling.
 NOTE: If a new housing is being installed, tighten
the cap screws to 28 ft-lb.
6. Install the shift fork shaft w/spring into the housing
making sure the shaft O-ring is positioned to the
inside.
CF266A
7. Install the shift fork assembly making sure the fork
leg is facing upward. Apply a small amount of oil to
the gasket; then install the gasket.
CF267A
8. Place the input shaft assembly onto the gear case
housing; then secure with the existing cap screws.
Tighten to 23 ft-lb.
CF275A
CC892
CC893
227