PRIMAAX
®
EX / PRIMAAX
®
for International Truck Vehicles
Component Replacement
50
17730-283
NOTE
Use a new QUIK-ALIGN pivot bolt kit (see the Parts List Section of this publication) for any axle
alignment or disassembly of the QUIK-ALIGN connection. This will help ensure that the proper
clamp load is applied to the connection and help prevent the joint to slip in service.
4. Verify the correct QUIK-ALIGN collar (eccentric/concentric) is in the correct location as
noted in the disassembly procedure.
5. Install QUIK-ALIGN connection with new Hendrickson fasteners and snug to about
50-100 foot pounds torque,
DO NOT
tighten at this time. The final torque must be done
after the alignment is complete.
6. Position the U-beam assembly on a floor jack.
7. Raise the U-beam assembly until the D-pins engage in the bottom cap.
SERVICE HINT
It may be necessary to rotate the QUIK-ALIGN eccentric collars to allow the full engagement of
the D-pins into the bottom caps.
SERVICE HINT
It may be necessary to raise or lower the front of the differential to allow the D-pins to engage in
the bottom cap. Use a drift pin if necessary to align the D-pins with the bottom cap.
8. Install the D-pin fasteners from front to back, see Figure 8-13.
9. Remove floor jack supporting the U-beam assembly.
10. Tighten D-Pin locknuts to 275-325 foot pounds torque.
FIGURE 8-13
11. Install the air spring between the frame and cross tube, see Figure 8-12.
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.
12. Install the lower air spring mounting bracket around the cross tube, engaging the mounting
studs on the air spring, see Figure 8-12.
13. Using
HAND TOOLS
install the lower mounting fasteners and tighten to 20-30 foot
pounds torque.
14. Install the wheels and remove axle support.
15. See additional Air Spring Cautions and Warnings in the Important Safety Notice Section of
this publication prior to deflating or inflating the air system.
16. Connect the height control valve linkage(s) to the height control valve arm(s) to inflate the
suspension, see vehicle manufacturer’s instructions.
17. Remove frame support(s).
18. Remove the wheel chocks.
Pro Gear and Transmission • 906 W. Gore St. Orlando, FL 32805 • 1 (877) 776-4600 / (407) 872-1901 • [email protected]
