Proprietary Rear Air
Suspension
Ride Height [inches (mm)]*
Single Drive Tandem Drive
Air Leaf N/A 11.70 (297)
Air Trac 11.00 (279) 11.00 (279)
Low Air Leaf 8.50 (216) 8.50 (216)
Low Low Air Leaf N/A 6.50 (165)
FLEX Air N/A 8.50 (216)
*These values are for a fully laden vehicle
SETTING RIDE HEIGHT PART 7: STARTING & OPERATING THE VEHICLE
ā 110 ā Y53-6007 (R10/06)
Follow this procedure to temporarily set ride height.
WARNING! To prevent possible injury and
damage to property, ensure that a vehicle is
parked and the wheels chocked before begin
-
ning this procedure.
CAUTION: Completing this procedure will
enable you to safely reach the nearest autho-
rized Peterbilt repair facility to have ride
height and pinion angle reset using the proper
equipment and technique. Do this as soon as
possible to avoid potential driveline damage.
NOTE: Suitable wheel chocks are at a minimum
an 18-inch (46 cm) long 4x4.
1. Ensure the air supply and delivery plumbing of the
height control valve is consistent with the following
illustrations:
ALIGNMENT PIN OR DOWEL CONTROL ARM LINK BOLT
FORWARD
FROM DUMP VALVE SWITCH
02941A
Typical Height Control Valve (Top View)