The function of the shock absorber is to dampen harsh spring movement and provide a means of controlling the motion of the wheels so that the bumps encountered by the wheels are not totally transmitted to the body of the truck and, therefore, to you and your passengers. As the wheel moves up and down, the shock absorber shortens and lengthens, thereby imposing a restraint on excessive movement by its hydraulic action.
A good way to see if your shock absorbers are working properly is to push on one corner of the truck until it is moving up and down for almost the full suspension travel, then release it and watch its recovery. If the truck bounces slightly about one more time and then comes to a rest, you can be fairly certain that the shock is OK. If the truck continues to bounce excessively, the shocks will probably require replacement.
REMOVAL & INSTALLATION
See Figures 1, 2, 3, 4, 5, 6, 7, 8 and 9
- Raise the front of the vehicle and support it with safety stands. Remove the wheel.
- Hold the upper stem of the shock absorber and remove the nuts, washer, and rubber bushing.
- Remove the bolt from the lower end of the shock absorber and remove the shock absorber from the vehicle.
- Install the shock absorber. Replace all of the rubber bushings with new ones if a new shock absorber is being installed. Install the lower retaining bolt from the front of the truck. Tighten the upper attaching nut to 12-16 ft. lbs. (16-22 Nm) and the lower nut to 23-30 ft. lbs. (30-40 Nm) on 1970-83 models; 43-58 ft. lbs. (59-68 Nm) on 1984-87 2wd models and 1984-88 4wd models; or 36-47 ft. lbs. (49-64 Nm) on 1988 2wd models.