SUSPENSION
WARNING!
Ensure that a vehicle is parked and
the wheels chocked before begin-
ning this procedure.
CAUTION
Completing this procedure will en-
able you to safely reach the nearest
authorized Peterbilt repair facility to
have ride height and pinion angle re-
set using the proper equipment and
technique. Do this as soon as possi-
ble to avoid potential driveline dam-
age.
NOTE
Suitable wheel chocks are at a min-
imum an 18-inch (46 cm) long 4x4.
1. Ensure that the tractor is fully laden
during this procedure. Do not use
these procedures on a vehicle that is
not laden (bobtail).
2. Ensure the air supply and delivery
plumbing of the height control valve
is consistent with the following
illustrations.
Typical Height Control Valve (Location
on Vehicle)
Typical Height Control Valve (Rear
View Looking Forward)
1.
Alignment Dowel
NOTE
•
At least one of the mounting
holes in the height control valve
bracket will be slotted to permit
rotating the valve.
•
On dual-valve systems, begin
with the LH valve on the next
step.
3. Loosen the fasteners mounting a
height control valve to its bracket.
4-58
Y53-6060-1C1
(03/17)
4
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