Ski-Doo FORMULA 500 1997, Shop Manual, Page: 254 / 352

Section 06 REAR SUSPENSION
Sub-Section 02 (SC-10 SUSPENSIONS (ALL VERSIONS))
06-02-11
Secure the shock body end in a vise with its rod
upward.
1. Clamp
Examine each shock for leaks. Extend and com-
press the piston several times over its entire
stroke. Check that it moves smoothly and with
uniform resistance with its rod upward.
Pay attention to the following conditions that will
denote a defective shock:
– A skip or a hang back when reversing stroke at
mid travel.
– Seizing or binding condition except at extreme
end of either stroke.
– Oil leakage.
– A gurgling noise, after completing one full com-
pression and extension stroke.
Renew if any faults are present.
All Models Equipped with Gas Pressurized
Shock
NOTE: Gas pressurized shocks are light gray
painted.
Gas shock can be inspected as follows:
Because of gas pressure, strong resistance is felt
when compressing shock. When released, the
shock will extend unassisted. Renew as required.
If suspecting an internal gas leak between oil
chamber and gas chamber, check shock as fol-
lows:
Install shock in a vise clamping on its bottom eye-
let with its rod upward.
Let it stand for 5 minutes.
Completely push down the shock rod then re-
lease.
Rod must comes out at a steady speed. If speed
suddenly increases particularly at end of exten-
sion, replace shock.
If suspecting a frozen gas shock proceed as fol-
lows:
Place shock in a freezer (temperature below 0°C
(32°F)) for 4 hours.
Push down on rod and note its resistance, com-
pare to a new shock. If shock is frozen it will be
much more difficult to compress than for the new
one.
SHOCK ABSORBER SERVICING
HPG, T/A (Take Apart) Shock Servicing
MX Z 440 Only
This damper is completely rebuildable. It offers
the options of replacing valves or revalving and/or
the option of replacing seals (should it be needed).
Although the adjustments are internal, rather than
external as in the MVA, the rider is able to select
the exact damping adjustment required for his/her
riding style.
Bombardier offers 2 valving adjustment options
through normal parts channels. A standard setting
with each damper (either from parts or on the
snowmobile) and a cross country setting, which
will offer a stiffer or harder ride for high speed
riding or racing.
-
CAUTION
Do not clamp directly on shock body.
A14F0BA
1
'
A06F0VA