Servicing Fox Zero Pro Shock Absorbers - Arctic Cat Sno Pro 120 Service Manual

Servicing Fox Zero Pro
Shock Absorbers
! WARNING
Before starting, read through all of these instructions
first to become familiar with the procedure. Make sure
the work area is clean and all of the necessary tools
are available. These shocks contain high pressure
nitrogen gas. Always use proper safety equipment
such as latex gloves and safety glasses when working
on shock absorbers.
! WARNING
Always wear latex or rubber gloves when servicing a
shock absorber with shock oil.
 NOTE: Fox Zero Pro Shock rebuild kits should be
ordered before servicing the shock. Kit (p/n 2603-849)
is for 0.498-in. shaft shocks, Kit (p/n 2603-013) is for
0.620-in. shaft shocks, and Kit (p/n 2604-880) is for 2-
in. body rear arm shocks.
REMOVING/INSTALLING SHAFT
EYELET
1. Using Gas Shock Retaining Blocks to prevent dam-
age to the shaft surface, place the shock shaft into a
vise.
2. Heat the shaft eyelet with a torch to soften the Loc-
tite.
 NOTE: The eyelet must be heated up to 300° for the
Loctite to soften.
3. Using a wrench, unscrew the eyelet from the shaft.
 NOTE: With the eyelet removed, inspect the bottom-
out bumper for cracks or wear.
4. Clean shaft threads and eyelet threads.
5. Apply red Loctite #271 to both threads, install the
eyelet, and tighten securely.
DISASSEMBLING
1. Remove the steel sleeve and polyurethane bushings
from the eyelets on both ends of the shock.
2. Clean the entire shock assembly with soapy water.
Dry the shock assembly with compressed air.
Use a soft-bristle brush to remove as much dirt and
debris as possible. Do not pressure wash the shock
as this can force water and debris inside causing dam-
age to the seals.
When using compressed air to dry components,
always wear safety glasses.
 NOTE: If compressed air is not available, use clean
towel to dry the shock assembly.
3. Clamp the body eyelet of the shock securely in vise
with shaft side up.
4. Remove the button-head screw from the nitrogen
valve in the shock body.
AG260
5. Insert the Inflation Needle squarely into center of the
nitrogen valve to release the pressure.
CAUTION
! WARNING
AG261
7
FS040
7-79