Leveling valve orientation at full extension – Hellwig Air 6290 User Manual
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18. Reconnect shock absorbers to axle brackets and torque bolts to 60-70 ft-lb. IMPORTANT— Raise
vehicle frame until the wheels come off the ground and support frame on jack stands. Note orientation
of leveling valve linkage. The leveling valve arm and link must NOT be in line when the suspension is
at full extension or the valve will not operate properly. Ensure there is at least a 20 degree angle be-
tween the lever arm and linkage at full extension . The leveling valve can be moved toward the passen-
ger side frame rail to increase this angle. The leveling valve MUST be RECHECKED at compression
and nominal ride height if the leveling valve is moved to ensure that the arm and linkage will not contact
the vehicle or any of its components.
6090 ( R-6090)
03/09/07
20 deg minimum
angle required at
full extension
Good Installation—Leveling
valve will work correctly
Angle between linkage
and lever arm main-
tained at full extension
Bad Installation—Leveling
valve will not work correctly
Lever arm and linkage point at
each other at full extension
which will result in damage to
lever arm, valve and linkage.
Correct by moving leveling
valve toward passenger side
frame rail until minimum angle
Leveling valve orientation at full extension