Adding Gas Pressure - BOMBARDIER 1996 Ski-doo MX Z440 Handbook

, A06F18S
1. Schrader valve 1.5-2 N*m (13-17 Ibf*in)
2. Schrader cap 5-6.5 N-m (44-57 Ibf=in)

Adding Gas Pressure

Nitrogen (N2) can now be added to damper body.
NOTE ; Never substitute another gas for nitrogen. Nitrogen has been selected for its
o
inert qualities and will not contaminate the gas chamber of the shock.
Preset your pressure regulator to 2070 kPa (300 PSI) nitrogen (N2), this gas pressure will restore the
correct pressure for your damper.
CAUTION: Do not exceed the recommended pressure values.
When removing and retightening the Schrader valve acorn nut use minimal torque. When the cap
is over tightened and subsequently removed it may prematurely break the seal of the Schrader
valve to the shock body and cause a loss of nitrogen charge without being noticed. If you suspect
this has happened then recharge the shock as a precaution. Inspect the acorn cap before installa-
tion to ensure that the internal rubber gasket is in its proper position..
WARNING : Whenever working with high pressure gas, use eye wear protection. Never
direct gas pressure toward anybody.
NOTE : Carefully inspect damper for gas or oil leaks. Any leaks must be corrected before
o continuing.
Damper gas pressure cannot be confirmed by using a pressure gauge. The volume of gas in the
shock is very small, and the amount lost during gauge installation will lower the pressure too
much and require refilling.
After recharging is complete and before installing the spring the rebuilt shock should be bench-
tested. Stroke the shock to ensure full travel and smooth compression and rebound action. If the
shaft moves in or out erratically this could indicate too much air is trapped inside. If the shaft will
not move or has partial travel then it may be hydraulically locked. In either event the shock must be
rebuilt again. Pay particular attention to the placement of the IFP, quantity of oil and shim stack/
piston assembly.
Section 03 CHASSIS PREPARATION
2
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