PRIMAAX
®
EX / PRIMAAX
®
for International Truck Vehicles
17730-283
49
Component Replacement
IT IS MANDATORY TO USE A FLOOR JACK EQUIPPED WITH A FOUR INCH CONTACT PLATE TO SUPPORT
THE U-BEAM ASSEMBLY AT THE CROSS TUBE TO FACILITATE SAFE LOWERING AND RAISING OF THE
U-BEAM ASSEMBLY. DO NOT USE A BOTTLE JACK. A BOTTLE JACK DOES NOT HAVE ENOUGH CONTACT
AREA AND CAN BE UNSTABLE. FAILURE TO DO SO CAN CAUSE COMPONENT DAMAGE OR RESULT IN
PERSONAL INJURY.
10. Install a floor jack with a 4" contact plate to support the U-beam assembly.
SERVICE HINT
Each frame hanger will have a pair of QUIK-ALIGN collars. Note which type of QUIK-ALIGN collar
is removed from which frame hanger location to facilitate the assemble process. Any eccentric
(with the square drive feature) QUIK-ALIGN collar should be mounted on the outboard side of
the frame hanger. Axle thrust angles can only be corrected on frame hangers equipped with
eccentric QUIK-ALIGN collars.
11. Mark the position of the QUIK-ALIGN square drive in relationship to the frame hanger prior
to loosening the QUIK-ALIGN connection. This will facilitate the axle alignment process after
the repair is complete.
12. Loosen both the QUIK-ALIGN fasteners,
DO NOT
remove at this time.
13. Remove and discard D-pin fasteners on both sides of the suspension.
SERVICE HINT
It may be necessary to rotate the QUIK-ALIGN eccentric collars to allow the full disengagement
of the D-pins into the bottom caps.
SERVICE HINT
It may be necessary to raise the front of the differential to allow the D-pins to disengage the
bottom caps.
14. Lower the floor jack and pivot the U-beam assembly down.
THE WEIGHT OF THE U-BEAM ASSEMBLY IS APPROXIMATELY 225 POUNDS. CARE SHOULD BE TAKEN
AT REMOVAL AND INSTALLATION TO PREVENT PERSONAL INJURY OR DAMAGE TO COMPONENTS.
15. Remove and discard the QUIK-ALIGN fasteners.
16. Remove QUIK-ALIGN eccentric and concentric collars.
NOTE
It may be necessary to use a pry bar to push the U-beam assembly out of the frame hangers.
17. Remove the U-beam assembly from the hangers.
18. Remove the U-beam assembly from the vehicle.
19. Inspect the U-beam assembly for any damage or wear and replace as necessary.
ASSEMBLY
1. Clean the QUIK-ALIGN slots in the hangers and collars of any dirt and debris and inspect for
any wear or damage. Replace as necessary.
2. Prior to installing the U-beam assembly, verify the clamp group is tightened to the proper
torque.
THE WEIGHT OF THE U-BEAM ASSEMBLY IS APPROXIMATELY 225 POUNDS. CARE SHOULD BE TAKEN
AT REMOVAL AND INSTALLATION TO PREVENT PERSONAL INJURY OR DAMAGE TO COMPONENTS.
3. Install the U-beam assembly into the frame hangers.
DISCARD USED QUIK-ALIGN FASTENERS. ALWAYS USE NEW QUIK-ALIGN FASTENERS TO COMPLETE
A REPAIR. FAILURE TO DO SO COULD RESULT IN FAILURE OF THE PART, OR MATING COMPONENTS,
LOSS OF VEHICLE CONTROL, PERSONAL INJURY, OR PROPERTY DAMAGE.
DO NOT ASSEMBLE QUIK-ALIGN JOINT WITHOUT THE PROPER FASTENERS. USE ONLY HENDRICKSON
GENUINE FASTENERS WITH SPECIAL COATING (H-COAT) TO SUSTAIN PROPER CLAMP FORCE.
FAILURE TO DO SO CAN CAUSE LOSS OF VEHICLE CONTROL, PROPERTY DAMAGE OR PERSONAL
INJURY AND VOID WARRANTY. ENSURE THAT THE QUIK-ALIGN FASTENER’S TORQUE VALUES ARE
SUSTAINED AS RECOMMENDED IN THE TORQUE SPECIFICATIONS SECTION OF THIS PUBLICATION.
FAILURE TO DO SO CAN CAUSE LOSS OF VEHICLE CONTROL RESULTING IN PERSONAL INJURY OR
PROPERTY DAMAGE.
Pro Gear and Transmission • 906 W. Gore St. Orlando, FL 32805 • 1 (877) 776-4600 / (407) 872-1901 • [email protected]
