Arctic Cat XC 450 2016, Service Manual

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108
Rear Gear Case
REMOVING
1. Remove both of the rear drive axles.
2. Remove the four cap screws securing the engine out-
put shaft to the rear gear case input flange.
KC169
3. Remove the two cap screws and lock nuts securing
the rear gear case to the frame; then remove the gear
case through the left side.
KC288A
INSTALLING

NOTE: If the engine output shaft has been disas-
sembled, grease the splines with molybdenum grease.
1. Slide the gear case into position through the left side
of the frame; then secure it to the frame with cap
screws and lock nuts. Tighten to 38 ft-lb.
2. Secure the engine output flange to the rear gear case
input flange with four cap screws and lock nuts.
Tighten to 20 ft-lb.
3. Install the rear drive axles.
Hub
REMOVING
1. Secure the ATV on a support stand to elevate the
wheel; then remove the wheel.
2. Remove the cotter pin from the nut.

NOTE: During assembly, new cotter pins should be
installed.
3. Remove the flange nut securing the hub.
4. Remove the brake caliper.
KC283
5. Remove the hub assembly.
6. Remove the four cap screws securing the brake disc.
CLEANING AND INSPECTING
1. Clean all hub components.
2. Inspect all threads for stripping or damage.
3. Inspect the brake disc for cracks or warping.
4. Inspect the hub for pits, cracks, loose studs, or spline
wear.
INSTALLING
1. Secure the brake disc to the hub with the four cap
screws coated with blue Loctite #243. Tighten to 15
ft-lb.
2. Apply grease to the splines in the hub.
3. Install the hub assembly onto the shaft.
4. Secure the hub assembly with the nut. Tighten only
until snug.
5. Secure the brake caliper to the knuckle with the two
new cap screws with “patch-lock.” Tighten the cali-
per cap screws to 20 ft-lb.

AT THIS POINT
For servicing the input shaft, pinion gear, needle bear-
ing, thrust button, and axle seal, see Front Differential in
this section.
! WARNING
Make sure the ATV is solidly supported on the support
stand to avoid injury.