Halfshafts (Drive Axle)
REMOVAL & INSTALLATION
Fig. 1: A torn CV-boot requires removal of the driveshaft for overhaul
Fig. 2: On most vehicles. the caliper should be removed and supported out of the way
Fig. 3: Also on most vehicles, the tie rod end should be separated from the steering knuckle
Fig. 4: Once the lower shock fasteners are removed it may be compressed and wired up out of the way
Fig. 5: Loosen and remove the flange bolts
Fig. 6: Remove the cotter pin and retainer so the axle nut may be loosened
Fig. 7: A prybar may be used across to of the lug nuts in order to keep the hub from turning while loosening the nut
Fig. 8: Use a suitable axle shaft removal tool to drive the shaft from the hub
Fig. 9: If a driver tool is not available, thread the nut just flush with the shaft end and tab gently with a rubber or brass mallet
Fig. 10: During assembly, hold the hub from turning and torque the axle nut to specification
FRONT DRIVE AXLE
The front axle assembly used on most 4wd models covered by this manual utilizes a central disconnect type front axle/transfer case system which allows shifting in and out of 4wd when the vehicle is moving under most driving conditions. The axle has an aluminum carrier which includes a vacuum activated center lock feature.
The axle on the MFI-Turbo is designed for full-time four wheel drive and therefore is not equipped with a disengagement feature. With this one exception, the MFI-Turbo and standard 4wd front axle assemblies are very similar.
The drive axles employ completely flexible assemblies which consist of inner and outer constant velocity (CV) joints connected by an axle shaft. The inner CV joint is a "tri-pot'' design, which is completely flexible and can move in and out. The outer CV joint is a "Rzeppa'' design which is also flexible but cannot move in or out.
NOTE: For more information on front axle identification, please refer to Section 1 of this manual.