PRIMAAX
®
EX / PRIMAAX
®
for Volvo Vehicles
17730-254 45 Component Replacement
SOME VEHICLE APPLICATIONS, SUCH AS VEHICLES EQUIPPED WITH OUTRIGGERS, RETAIN SOME
PRESSURE IN THE AIR SPRINGS AT ALL TIMES. PRIOR TO PERFORMING ANY MAINTENANCE, SERVICE,
OR REPAIR OF THE SUSPENSION, VERIFY EACH AIR SPRING IS COMPLETELY DEFLATED. FAILURE TO
DO SO COULD RESULT IN SERIOUS PROPERTY DAMAGE AND/OR SEVERE PERSONAL INJURY.
5. Lower the leveling valve arm(s) to exhaust the air in the air springs and deflate the rear
suspension. Remove the through bolt from the longitudinal torque rod to top pad joint.
SERVICE HINT Note the quantity of shims removed to maintain the correct pinion angle of the axle at
assembly. See Alignment & Adjustments Section of this publication.
6. Remove the fasteners from the longitudinal torque rod to top pad joint and shims (if
equipped), see Figure 8-29.
FIGURE 8-29
SERVICE HINT Due to certain pinion angle configuration the removal of the D-pin bolts may be necessary to
access the U-bolt locknuts.
THE USE OF A FLOOR JACK EQUIPPED WITH A FOUR INCH SUPPORT PLATE IS MANDATORY TO
SUPPORT THE SUPPORT BEAM AND CROSS TUBE ASSEMBLY. DO NOT USE A BOTTLE JACK. THE
USE OF A BOTTLE JACK WILL NOT ENGAGE THE CROSS TUBE TO FACILITATE SAFE LOWERING AND
RAISING OF THE SUPPORT BEAMS AND CROSS TUBE ASSEMBLY. FAILURE TO DO SO CAN CAUSE
COMPONENT DAMAGE OR RESULT IN PERSONAL INJURY.
THE WEIGHT OF THE SUPPORT BEAMS AND CROSS TUBE ASSEMBLY IS APPROXIMATELY 225
POUNDS. CARE SHOULD BE TAKEN AT REMOVAL AND INSTALLATION TO PREVENT PERSONAL INJURY
OR DAMAGE TO COMPONENTS.
7. Support the support beams and cross tube assembly with a floor jack that is equipped with
a four inch support plate.
8. Remove the U-bolts from the clamp group and discard, see Figure 8-30.
9. Remove the top pad.
10. Inspect the top pad and the axle housing for any cracks or damage. Replace as necessary.
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