REMOVAL & INSTALLATION
- Raise and support the vehicle safely using jackstands. The jackstands or a floor jack must be positioned under the lower control arm between the spring seat and ball joint in order to allow the vehicle's weight to retain the spring.
- Remove the tire and wheel assembly.
- Separate the upper ball joint from the steering knuckle using a suitable separator tool. For details refer to the upper ball joint procedures earlier in this section.
- Remove the control arm shaft-to-frame nuts.
Tape the shims together and identify them so that they can be installed in the positions from which they were removed.
- Remove the bolts which attach the control arm shaft to the frame and remove the control arm. Note the positions of the bolts for installation purposes.
- Install the control arm and insert the shaft-to-frame bolts, making sure that they are installed in the same position they were in before removal. Position the shims in their original positions.
- Use free running nuts (not locknuts) to pull serrated bolts through the frame. Then install and tighten the locknuts starting with the thinner shim pack first. Tighten the shaft-to-frame nuts to 72-75 ft. lbs. (98-100 Nm).
- Install the upper ball joint to the steering knuckle, then install the retaining nut and a new cotter pin. Do not back off the torque specification in order to insert the pin.
- Install the tire and wheel assembly, then remove the supports and lower the vehicle.
- If the control arm bushings were replaced or the pivot shaft end nuts were loosened, bounce the front end a few times in order to center the bushings. Then, tighten the pivot shaft nuts to 75 ft. lbs. (102 Nm) for 1979-80 vehicles or to 85 ft. lbs. (115 Nm) for 1981 and later vehicles.
CONTROL ARM BUSHING REPLACEMENT
- Remove the upper control arm from the vehicle.
- Loosen and remove the nuts from the ends of the pivot shaft.
- Using a suitable bushing removal tool, press the bushings out of the control arm.
- Using a bushing driver, press the new bushings into the control arm and over the ends of the pivot shaft.
- Loosely install the nuts to the ends of the pivot shaft, then install the upper control arm to the vehicle.
- Once the control arm is installed and the vehicle is resting on its suspension, bounce the front end a few times in order to center the bushings. Then, tighten the pivot shaft end nuts to 75 ft. lbs. (102 Nm) for 1979-80 vehicles or to 85 ft. lbs. (115 Nm) for 1981 and later vehicles.