Rear
DESCRIPTION - STRUT ASSEMBLY (REAR)There are two different design struts available on this vehicle. A standard strut and an adjustable strut which is used on vehicles equipped with the ACR performance package. Both struts share common style components except that the ACR strut has no external jounce bumper. It is internal.
The rear strut assemblies support the weight of the vehicle using coil springs positioned around struts. The coil springs are contained between the upper mount of the strut assembly and a lower spring seat on the body of the strut.
The top of each strut assembly is bolted to the top of the inner fender through a rubber isolated mount. The bottom of the strut assembly attaches to the rear knuckle using 2 thru-bolts with prevailing torque nuts.
The rear strut assembly includes the following components:
- Strut shaft retaining nut
- Upper mount (rubber isolated)
- Dust shield
- Jounce bumper
- Coil spring
- Lower spring isolator
- Strut (damper)
Any component in need of service requires removal of the strut assembly from the vehicle and disassembly of it.
Rear coil springs are rated separately for each corner or side of the vehicle depending on optional equipment and type of vehicle service. If a coil spring requires replacement, be sure the spring needing replacement is replaced with a spring meeting the correct load rating for the vehicle with its specific options.
The adjustable ACR strut has a knob on the bottom. It is there to adjust the suspension firmness. Although the strut shaft is much thicker on ACR struts, the same upper mount and retaining nut can be used.
OPERATION - STRUT ASSEMBLY (REAR)
The strut assembly cushions the ride of the vehicle, controlling vibration, jounce and rebound of the suspension.
The coil spring controls ride quality and maintains proper ride height.
The spring isolators isolate the coil spring at the top and bottom from coming into metal-to-metal contact with the upper mounting seat and the strut.
The jounce bumper limits suspension travel and metal-to-metal contact under full jounce condition.
The strut dampens jounce and rebound motions of the coil spring and suspension.