PART 7: STARTING & OPERATING THE VEHICLE SETTING RIDE HEIGHT
(05/10) Y53-6032 – 137 –
is equipped with a Peterbilt rear air suspension, and if it
becomes necessary to reset the ride height, you may tem-
porarily set it by following the next procedure. Proper ride
height measurement and values are shown in the illustra-
tion and table below.
Ride Height Measurement (Tandem Axles Location)
Follow this procedure to temporarily set ride height.
WARNING! To prevent possible death, injury
and damage to property, ensure that a vehicle
is parked and the wheels chocked before
beginning 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.
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 6.50 (165) 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
Y53-6032.book Page 137 Monday, May 24, 2010 3:37 PM
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