Suspension: Service and Repair

Fig. 1 Rear Axle & Suspension Assembly (FWD):

FWD models

Fig. 2 Rear Axle & Suspension Assembly (RWD):

AWD models


REMOVAL

1. Raise and support vehicle, then position suitable floor jack below axle assembly and raise axle assembly to relieve weight on rear springs.
2. Disconnect height sensor actuator assembly, then lower ends of rear shock absorbers at axle brackets.
3. Remove U-bolt attaching nuts and washers, then U-bolt.
4. Disconnect and lower rear axle assembly, allowing rear spring to hang free.
5. Remove four attaching bolts from front spring hanger.
6. Remove rear spring shackle attaching nuts and plate, then shackle from spring.
7. Remove front pivot bolt from front spring hanger.
8. Remove springs from vehicle.

INSTALLATION

1. Assemble shackle, bushings and plate on rear of spring and rear spring hanger, then install shackle bolt. Do not tighten nut at this point.
2. Assemble front spring hanger to front of spring eye, then install pivot bolt. Do not tighten nut at this point. Pivot bolt must face inboard to prevent structural damage during installation of spring.
3. Raise front spring, then install four hanger attaching bolts. Tighten bolts to specifications, then connect actuator assembly.
4. Raise axle assembly with axle centered below spring center bolt, then install U-bolt and washer. Tighten U-bolt attaching nut to specifications.
5. Install shock absorbers and attaching nuts. Do not tighten nuts at this point.
6. Lower vehicle to floor, allowing full weight of vehicle on wheels, then tighten following fasteners to specifications: front pivot bolt, shackle nuts and shock absorber bolts.
7. Connect rear brake proportioning valve spring.