REMOVAL & INSTALLATION
See Figure 1
Multi-Link suspensions require alignment any time the suspension components are disassembled. Installation tightening and torque procedures are critical to correct alignment.
- Raise and support the vehicle safely. Make sure the front supports are placed as far forward as possible. Check that the rear supports will not interfere with the support arm.
- Remove the rear wheels.
- Remove the sway bar from the vehicle.
Install compression tool Kent-Moore® No. J-41470 (or equivalent) as follows:
- Attach one end of the tool yoke into the boss on one side of the axle support beam.
There is a boss cast into the support on either side of where the spring is visible from underneath.
- Slide the tool into the boss on the other side of the axle support beam to fully engage the yoke.
- Make sure the tool is seated between the retaining tabs before any suspension components can be removed.
- Make sure the rollers on the ends of the tool are positioned inside the lower control arms.
- Turn the handle to raise the control arms and compress the leaf spring.
- Once the spring is compressed, components can be removed.
- Compress the suspension slightly.
- Removed the shock absorber mounting bolt from the rear support arm.
- Press the suspension up to normal position, as if the vehicle were on the ground.
- Remove the bolts at the front of the support arm bracket.
- Remove the support arm-to-wheel bearing housing bolt.
- Loosen the support arm bracket nut a few turns.
- Tap the support arm off the wheel bearing housing.
- Remove the support arm bracket nut and the support arm with the bracket attached. Do not remove the support arm-to-bracket through bolt.
- Remove the track rod-to-wheel bearing housing bolt.
- Tap the track rod off the wheel bearing housing.
- Remove the lower control arm-to-wheel bearing housing nut. Tap out the bolt with a brass punch.
- Loosen the inboard lower control arm mounting nut until approximately 0.04-0.08 in. (1-2mm) of the bolt still protrudes from the nut. Tap the bolt with a brass punch until the nut contacts the lower control arm.
- Repeat Steps 6-14 to disassemble the opposite side of the suspension.
- Lower the compression tool and control arms completely. Inspect the spring mountings in the lower control arms. Retain the mountings in the control arms for assembly.
- Loosen all the lower rear axle support bolts one turn.
- Remove the two front bolts at the pinion flange.
- Remove the spacers.
- Install rear axle retainer 5580 (or equivalent) to the front edge of the differential. Install rear axle retainer 5579 (or equivalent) to the rear edge of the differential.
- Position a lift or jack against the lower axle support beam.
- Remove the lower support beam mounting bolts and lower the support beam.
Before removing the spring mounting plates, take note of the positioning. Installation must be in the same positions.
- Remove the spring mounting plates and remove the spring.
- Check all spring mountings for damage or wear.
- Install the spring. Install the spring mounting plates using new bolts.
The leaf spring is marked with a center line.
- Make sure the spring is centered. Tighten the spring mounting plate bolts alternately to 37 ft. lbs. (50 Nm).
- Position the lower axle support beam on a lift or jack.
- Make sure the lower axle support beam contact surfaces are clean and that the lower differential bushing is in place.
- Make sure the lower differential bushings are inside the guide flanges of the lower axle support beam.
- Raise the lower axle support beam into position.
- Install new mounting bolts except at the pinion flange. Tighten the bolts until there is approximately 0.08-0.16 in. (2-4mm) clearance between the support surfaces.
- Remove the lift or jack.
- Remove the differential retainers 5579 and 5580 (or equivalents) from the differential.
- Install the 2 front spacers between the upper and lower axle support beams.
- Install new bolts at the pinion flange.
- Tighten all lower axle support bolts diagonally until snug. Tighten the bolts diagonally to 59 ft. lbs. (80 Nm).
- Install the compression tool.
- Install the spring into the mounting in the control arms.
- Raise the control arms up to their normal position.
- Install the lower control arm to the wheel bearing housing,
- Install the track rod to the wheel bearing housing using a new nut and tighten to 59 ft. lbs. (80 Nm).
- Install the rear support arm using new bolts and nut, but do not yet tighten the bolts and nut.
- Tighten the rear bolt and front nut to 59 ft. lbs. (80 Nm).
- Tighten the front bolts to 37 ft. lbs. (50 Nm).
- Install the shock absorbers.
- Make sure the washers and bushings on the sway bar links are in place.
- Raise the sway bar into position and install.
- Install the wheels.
- Lower the vehicle.
- Check wheel alignment.