Upper Idler Wheels; Slide Rail - Arctic Cat ZR 120 Service Manual

DISASSEMBLING
1. With the skid frame removed, remove the cap
screws and flat washers securing the outer idler
wheels. Remove the idler wheels from the axle and
account for the adjuster bushings.
2. Slide the axle out of the rear axle housing and the
rear spacer.
CLEANING AND INSPECTING
1. Clean the bearings with a clean cloth.
2. Inspect all idler wheel bearings. Rotate each bear-
ing (by hand) and if any roughness or binding is
noted, replace the idler wheel assembly.
3. Inspect the outer rubber portion of the idler wheels
for cracks and poor bonding.
4. Inspect the plastic hub of each idler wheel for
cracking.
5. Inspect the axle for wear and damaged threads.
Damaged threads may be repaired with a 3/8 x 16
tap.
ASSEMBLING
1. In order, slide the axle through the rear axle hous-
ing; then place a spacer on the axle. Slide the axle
through the opposite axle housing.
2. Place the adjuster bushings on the axle (on the out-
side of each axle housing). Make sure the adjuster
bushing is positioned properly towards the adjust-
ing cap screw.
3. Place the rear idler wheels on the axle and secure
with two cap screws (coated with blue Loctite
#243) and washers. Tighten to 20 ft-lb.

Upper Idler Wheels

REMOVING
1. Remove the two cap screws securing the upper
idler wheels to the tunnel; then remove the wheels.
2. Account for and note the location of all spacers.
46
INSPECTING
1. Inspect each idler wheel for cracks or damage.
2. Rotate the idler wheel bearing (by hand) and
inspect for binding or roughness.
3. Inspect the axle and spacers for cracks or bends.
INSTALLING
1. Lightly grease the axle; then slide the inner spacer
onto the axle.
2. Place the upper idler wheels into position, place
the spacers into position, and secure with cap
screws (coated with blue Loctite #243). Tighten to
20 ft-lb.
REMOVING

NOTE: When replacing one or both slide rails is nec-
essary, remove one slide rail at a time. The remaining
slide rail will then hold the crossbraces and brackets in
their correct assembly order which is much quicker
than to completely disassemble the entire skid frame.
1. With the skid frame removed, remove the cap
screw, washers, and lock nut securing the end cap
to the slide rail. Remove the end cap from the slide
rail.
IO115A

Slide Rail

744-844A
744-844B