Elevate the vehicle and support safely on jackstands.
Remove the wheel.
Remove the shock absorber.
Remove the bump stop and disconnect the stabilizer bar from the lower control
arm. Note that the rubber bushings for the stabilizer are not all the same.
They are NOT interchangeable and should be labeled or identified for correct
reassembly.
Install spring compressor tool (MB-990792 or equivalent) to the coil spring
and to compress the spring. Make absolutely sure the spring compressor is
correctly installed before compressing the spring.
Remove the cotter pin and lower ball joint nut. Place a floor jack under
the control arm; elevate the jack to within 1 in. (25mm) of the arm.
Release the lower ball joint from the knuckle using a ball joint separator
such as MB 990809–01 or equivalent tool. The arm will drop onto the
jack as the joint comes loose.
Slowly release the compressor tool from the coil spring.
Fig. 1: Front coil spring removal and installation
components — rear wheel drive Pick-ups
Fig. 2: Use the special tool (MB990792–01)
to compress the coil spring for removal and installation — rear
wheel drive Pick-ups
Lower the jack as necessary, pull the arm down and remove the spring with
the rubber isolation pad and upper spring seat from the vehicle.
Install the spring with the rubber isolator. Make sure the spring seats
correctly in its upper and lower mounts. Install the compressor tool and compress
it enough so the lower ball joint can be inserted through the knuckle. Use
the jack to support and adjust the height of the lower control arm during
installation.
Tighten the lower ball joint nut to 100 ft. lbs. (136 Nm). Install a new
cotter pin. Remove the spring compressor.
Install the bump stop and install the shock absorber. The shock absorber
mounting bolts (upper and lower) are tightened to only 10 ft. lbs. (13 Nm).
The bump stopper mounting bolts should be tightened to 51–61 ft. lbs.
(70–85 Nm).
Install the stabilizer bar, remembering to install the rubber bushings and
hardware in the correct locations. Tighten the sway bar bolt until the bolt
threads project 0.87–0.94 in. (22–24mm) beyond the nut.
Install the wheel and lower the vehicle to the ground.