FRONT DRIVE AXLE
Hubs and Bearings
REMOVAL & INSTALLATION
Models 44, 60, 70 and 80 with Manual or Automatic Locking Hubs
Model 44 With Full-Time 4-Wheel Drive
- Raise the vehicle and install jackstands.
- Refer to Manual or Automatic Free Running Hub Removal and Installation and remove the hub assemblies.
Fig. 1: Remove the outer locknut on the Model 60/70 front drive axle
- Remove the wheel bearing lock nut, using a hub nut wrench.
- Remove the lock ring from the bearing adjusting nut. This can be done with your finger tips or a screwdriver.
Fig. 2: Exploded view of the front hub retaining hardware
- Using a hub nut wrench remove the bearing adjusting nut.
- Remove the caliper and suspend it out of the way (see the brake section).
- Slide the hub and disc assembly off the spindle. The outer wheel bearing will slide out as the hub is removed, so be prepared to catch it.
- Carefully position the hub and disc assembly on the spindle.
- Install the outer bearing cone and roller, and the adjusting nut.
NOTE: The adjusting nut has a small dowel on one side. This dowel faces outward to engage the locking ring.
- Using a hub nut wrench tighten the bearing adjustment nut to 50 ft. lbs. (68 Nm), while rotating the wheel back and forth to seat the bearings.
- Back off the adjusting nut approximately 90°.
- Install the lock ring by turning the nut to the nearest hole and inserting the dowel pin.
NOTE: The dowel pin must seat in a lock ring hole for proper bearing adjustment and wheel retention.
- Install the outer lock nut and tighten to 50-80 ft. lbs. (68-108 Nm). Final end-play of the wheel on the spindle should be 0.001-0.010 in. (0.025-0.25mm).
- Assemble the hub parts.
- Install the caliper.
- Remove the jackstands and lower the vehicle.
- Remove the wheel cover.
- Remove the cotter pin and loosen the axle shaft nut.
Fig. 3: Remove the wheel bearing adjusting nut from the Model 44 front axle
- Raise the support the front end on jackstands.
- Remove the wheels.
Fig. 4: Exploded view of the Model 44 wheel bearing adjusting nut, retaining washer and locknut in their correct relationship
- Unbolt the caliper and support it out of the way. DO NOT DISCONNECT THE BRAKE LINE!
- Remove the inboard brake pad.
- Remove the axle shaft nut and washer.
- Through the hole provided in the rotor, remove the six retainer bolts.
- Position pull C-4358, or equivalent, over the wheel lugs and install the lug nuts. Tighten the main screw of the puller to remove the hub, bearings, retainer and outer seal as an assembly.
- Insert a prybar through the U-joint and wedge the shaft inward as far as it will go. Make sure that it is wedged securely and can't be moved.
- Install the hub, rotor and bearing assembly and tighten the retainer bolts to 30 ft. lbs. (40 Nm) in a crisscross pattern.
- Install the brake adapter. Tighten the bolts to 85 ft. lbs. (115 Nm).
- Remove the prybar form the U-joint.
- Install the axle shaft nut and tighten it to 100 ft. lbs. (136 Nm), then continue tightening it to align the cotter pin holes. Install the cotter pin.
- Using the lube fitting, fill the knuckle with NLGI, Grade 2, multi-purpose EP grease until the grease is seen flowing through the inner seal.
Fig. 5: Lubrication fitting location on the rotor top hat
- Install the inner brake pad and caliper (see Section 9).
- Install the wheels and tighten the lug nuts to 110 ft. lbs. (150 Nm). Need exploded view of 1995 - prev.gif