PRIMAAX
®
EX / PRIMAAX
®
for International Truck Vehicles
Component Replacement
62
17730-283
12. Rap the top of the U-bolts with a dead blow mallet, and retighten to the proper torque.
DO
NOT
exceed the specified tightening torque specified on the U -bolt locknuts. Tighten the ¾"
locknuts to 350-400 foot pounds torque, see Figure 8-34.
13. Pivot the shock back into the lower shock mount and install the lower shock absorber
mounting fasteners. Tighten the
5
/
8
" locknuts to 200-225 foot pounds torque.
14. Install the S-cam support bracket and fasteners (if equipped). Tighten the
3
/
8
" locknuts to
30-40 foot pounds torque. Tighten the
5
/
16
" locknuts to 20-30 foot pounds torque.
15. Install the air spring between the frame and the cross tube, see Figure 8-35.
a.
PRIMAAX EX
— Ensure the
“air spring slot”
located in the bottom of the air spring
engages the
“beam notch”
on the top of the support beam.
b.
PRIMAAX
— Ensure the
“V” notch
in the end cap engages the “locator tab” on the
air spring.
16. Install the lower air spring mounting bracket around the cross tube, engaging the mounting
air spring studs, see Figure 8-35.
17. Using
HAND TOOLS
install the lower mounting fasteners and tighten to 20-30 foot
pounds torque.
18. Install the wheels and remove axle support.
19. Remove the jack stands and lower the frame of vehicle.
20. See additional Air Spring Cautions and Warnings in the Important Safety Notice Section of
this publication prior to deflating or inflating the air system.
21. Connect the height control valve linkage(s) to the height control valve arm(s) to inflate the
suspension.
22. Alignment is necessary anytime the U-beam assembly is removed to complete the repair.
See Alignment & Adjustments Section of this publication.
23. Remove the wheel chocks.
S-CAM SUPPORT BRACKET (If equipped)
DISASSEMBLY
1. Chock
the
wheels.
2. Remove and discard the S-cam U-bolt fasteners, see Figure 8-40.
FIGURE
8-40
3. Remove and discard the
S -cam U-bolt from the bracket
and the S-cam housing.
4. Remove and discard the fas-
teners connecting the S-cam
support bracket from the bot-
tom cap.
5. Remove the bracket and
i n s p e c t c o m p o n e n t s fo r
wear or damage. Replace as
necessary.
ASSEMBLY
1. Install the bracket on top of
the bottom cap.
Pro Gear and Transmission • 906 W. Gore St. Orlando, FL 32805 • 1 (877) 776-4600 / (407) 872-1901 • [email protected]
