REMOVAL & INSTALLATION
See Figures 1, 2 and 3
These models use a driveshaft with 3 U-joints and a center support bearing. The driveshaft is balanced as an assembly. It is not recommended that it be disassembled.
- Raise and properly support the vehicle.
- Mark the relationship of the driveshaft flange to the differential flange.
- Unbolt the center bearing bracket.
- Unbolt the driveshaft flange from the differential flange.
- Pull the driveshaft back under the rear axle.
- Align the mating marks made in Step 1 and install the driveshaft. Tighten the flange bolts to 17-24 ft. lbs. (22-30 Nm).
- Install the center bearing bracket and tighten the fasteners to 26-35 ft. lbs. (35-45 Nm).
- Lower the vehicle.
See Figure 4
The driveshaft universal joints are not serviceable. Inspect the journal axial play and if it exceeds 0.00 inches, replace the driveshaft assembly.
See Figure 5
If vibration is present at high speed, inspect the driveshaft run-out first.
- Raise the vehicle and support safely.
- Measure the driveshaft run-out at several points by rotating the final drive companion flange by hand.
- If the run-out exceeds 0.024 in. (0.6mm), disconnect the driveshaft at the final drive and rotate the companion flange 180 degrees and reinstall.
- If the run-out still exists, run the driveshaft at about 30 miles per hour (48 kp/h) with the rear wheels off the ground and support safely.
- Use a jackstand to steady a light colored pencil.
- As the driveshaft rotates, mark the high spots on the driveshaft.
- Place 2 hose clamps around the driveshaft opposite the high spot and recheck. Move the clamps around to try to balance the shaft.
- If 2 clamps does not correct the vibration, replace the driveshaft, center bearing or U-joints.