Pacbrake is a registered trademark of Pacbrake Co.
6
HP10121 AMP AIR SUSPENSION KIT
L5934
L5934.REV10_16.07.2018
16
CHECK THE CLEARANCE
Ensure adequate clearance exists between the brake lines and the carriage
bolts. The brake line must not touch the carriage bolts. Adjust to attain clearance
if necessary. Once correct alignment of the air spring is attained:
Tighten the four sway bar bolts to 45 ft-lbs, 61 N•m.
Tighten the two 1¼" carriage bolts of the top brackets to 20 ft-lbs, 27 N•m.
Tighten the two axle strap carriage nuts to 20 ft-lbs, 27 N•m.
Tighten the two support bracket to upper bracket fasteners to 20 ft-lbs, 27 N•m.
Repeat on the other air spring.
Re-install and tighten both lower shock absorber fasteners.
Torque to 100 ft-lbs, 135 N•m.
17
INSTALL THE HEAT SHIELD
Bend the two center tabs of the heat shield supplied for fastening to the
exhaust pipe as shown. Attach the heat shield with the gear clamps supplied
to the exhaust pipe to protect the air spring.
STEP 17
13
Using the M10 x 35 capscrews provided, insert one capscrew into each of the
lower support brackets as shown in the photo.
Insert the lower end of the support brackets with bolts into the axle tube sway
bar brackets. Lift the sway bar up and loosely install the original nuts.
14
Loosely install the
3
/
8
- 16 x 1 ¾"
bolts with large flat washers and nylock nut into
each of the lower air spring brackets to the support brackets.
Install the axle straps onto the 5"
long carriage bolts. Loosely install the large flat
washers and nylock nuts provided.
15
ADJUST THE AIR SPRING
Adjust the air spring assembly to the upper bracket by moving the lower bracket
on the axle tube to ensure the air spring is correctly aligned (as shown in the
diagram below).
STEP 13
STEP 14
STEP 15
INCORRECT
CORRECT
REAR
SUPPORT
BRACKET
FRONT
SUPPORT
BRACKET
