PRIMAAX
®
EX / PRIMAAX
®
for International Truck Vehicles
Component Replacement
42
17730-283
5. Install the air spring between the frame and cross tube, see Figure 8-2.
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.
FIGURE 8-2
6. Install the lower air spring mounting bracket around the cross tube, engaging the mounting
air spring studs, see Figure 8-2.
7. Using
HAND TOOLS
install the lower mounting fasteners and tighten to 20-30 foot
pounds torque.
8. Install the air line fitting to the air spring using Teflon or equivalent thread seal.
9. Reconnect the air line to the air spring.
10. See additional Air Spring Cautions and Warnings in the Important Safety Notice Section of
this publication prior to deflating or inflating the air system.
11. Inflate the suspension slowly and verify that the air spring bladder inflates uniformly without
binding.
12. Connect the height control valve linkage(s) to the height control valve arm(s) to inflate the
suspension.
13. Remove the frame supports.
14. Verify the ride height is within specification, refer to vehicle manufacturer for proper ride
height adjustment.
15. Remove the wheel chocks.
SHOCK ABSORBER
THE SHOCK ABSORBERS ARE THE REBOUND TRAVEL STOPS FOR THE SUSPENSION. ANYTIME THE
AXLE ON A PRIMAAX EX / PRIMAAX SUSPENSION IS SUSPENDED IT IS MANDATORY THAT THE SHOCK
ABSORBERS REMAIN CONNECTED. FAILURE TO DO SO CAN CAUSE THE AIR SPRINGS TO SEPARATE
FROM THE PISTON AND RESULT IN PREMATURE AIR SPRING FAILURE. REPLACEMENT OF SHOCK
ABSORBERS WITH NON-HENDRICKSON PARTS CAN ALTER THE REBOUND TRAVEL OF THE SUSPENSION.
DISASSEMBLY
1. Chock the wheels of the vehicle.
NOTE
If removal of the height control valve linkage bracket is necessary for shock absorber
replacement, mark the position of the linkage bracket to facilitate reinstallation.
Pro Gear and Transmission • 906 W. Gore St. Orlando, FL 32805 • 1 (877) 776-4600 / (407) 872-1901 • [email protected]
