Arctic Cat Sno Pro 120 Service Manual page 319

 NOTE: It may be necessary to use Brake Caliper
Bearing Puller (p/n 0744-067) to remove the caliper/
bearing assembly.
 NOTE: If the chain case needs to be removed,
remove all self-tapping screws and machine screws
with lock nuts.
CLEANING AND INSPECTING
CHAIN CASE
1. Inspect sprockets and chain(s) for excessive wear or
stretching.
2. Inspect bearings and gears for roughness or chip-
ping.
 NOTE: If bearing replacement is necessary, the
chain case must be removed from the tunnel and an
appropriate press utilized to remove and install bear-
ings.
3. Clean all interior chain case surfaces and compo-
nents in cleaning solvent and dry using compressed
air.
Always wear safety glasses when using compressed
air.
ASSEMBLING/INSTALLING CHAIN
CASE/DRIVEN SHAFT/DRIVESHAFT/
TRACK
If the driveshaft and driven shaft were not removed, pro-
ceed to step 12.
PC175
1. Install chain case assembly onto the chassis and
secure with six self-tapping screws and four machine
screws with lock nuts. Tighten the self-tapping
screws to 144 in.-lb.
 NOTE: If an existing chain case is being reinstalled,
tighten the self-tapping screws to 105 in.-lb.
2. Place the driveshaft/drive sprocket assembly into the
tunnel brake-end first; then into the chain case drive-
shaft bearing.
PC151
3. Install the inner brake caliper assembly and secure
with three cap screws and the retaining ring. Tight-
ened cap screws securely.
PC159
 NOTE: If the brake caliper was split, proceed to step
4. If not, proceed to step 6.
4. Install the brake disc and secure with the retaining
ring.
! WARNING
6
PC147
PC148A
6-27