Hellwig Air 6290 - Manual (Page 13)

6090( R-6090) 03/09/07
17. IMPORTANT– BEFORE DRILLING ANY MOUNTING HOLES IN CROSS-
MEMBER, remove jack stands and lower frame so that the weight of the vehicle is on
the bumpstops. CHECK POSITION OF LEVELING VALVE SO THAT IT CLEARS
AXLE ASSEMBLY AND BRAKE LINES. It will be a close fit but there should be at
least 1/2” of clearance. Relocate brake lines if required. Also check that the leveling
valve arm will not contact the floor of the vehicle or any other components—
evaporative canister, vent tube, exhaust pipe, etc. After verifying clearances proceed to
step 18—Do not drill holes at this time.
Evaporative
canister.
Vent Tube
IMPORTANT: Ensure lev-
eling valve and linkage will
not contact the floor, axle,
or evaporative canister
when full weight of vehicle
is on the bumpstops.
Leveling Valve Clearances with vehicle on bumpstops
Maintain at least 1” clearance
to vehicle floor when weight
of vehicle is on bumpstops.
Check position of leveling
valve so that at least 1/2” clear-
ance is maintained to axle and
Leveling Valve clearance must be checked with weight of vehicle
on bumpstops before drilling any mounting holes.