Wheel Hub: Service and Repair

Removal

Note: The wheel bearing and hub are installed as an assembly.

1. WARNING: The electrical power to the air suspension system must be shut off prior to hoisting, jacking or towing an air suspension vehicle. This can be accomplished by turning off the air suspension switch located in the RH kick panel area. Failure to do so can result in unexpected inflation or deflation of the air springs, which can result in shifting of the vehicle during these operations.

Raise and support the vehicle.

2. CAUTION: Do not use heat to loosen a seized wheel nut. Heat can damage the wheel and wheel bearings.

Remove the wheel and tire assembly.
3. Remove the brake disc.





4. Remove the front wheel hub nut.
1. Remove and discard the cotter pin.
2. Remove the retainer.
3. Remove the nut.





5. Remove the brake disc shield.
1. Remove the bolts.
2. Remove the brake disc shield.





6. Remove the front brake anti-lock sensor.
1. Remove the bolt.
2. Remove the front brake anti-lock sensor.

7. CAUTION: Do not over-extend the CV joint and boots when removing the hub and bearing assembly.

Note: The CV joint is a slip fit into the wheel hub and bearing. A puller will not normally be required.





Remove the wheel hub.
1. Remove the bolts.
2. Push the CV joint inboard. Remove the wheel hub.





8. Remove the seal.

Installation





1. Install the seal using the Knuckle Seal Replacer, the Threaded Drawbar and Bearing Cup Replacer.





2. Install the wheel hub.
1. Position the wheel hub on the front wheel driveshaft and joint and into the front wheel knuckle.
2. Install the wheel hub bolts.





3. Install the front brake anti-lock sensor.
1. Install the front brake anti-lock sensor into the wheel hub.
2. Install the front brake anti-lock sensor bolt.





4. Install the brake disc shield and front axle hub nut.
1. Position the brake disc shield.
2. Install the bolts.
3. Install the front axle hub nut.
4. Install the retainer.
5. Install a new cotter pin.
5. Install the brake disc.

6. WARNING: When the wheel is installed, always remove any corrosion, dirt or foreign material that may be present on the mounting surfaces of the wheels or the surfaces of the wheel hub, brake drum or brake disc that contacts the wheel. Installing wheels without proper metal-to-metal contact at the wheel mounting surfaces can cause the wheel nut to loosen and the wheel to come off while the vehicle is in motion, causing loss of control.

WARNING:
^ Retighten at 800 km (500 miles) after any wheel change or any time the wheel nuts are loosened.
^ Failure to retighten wheel nuts at the mileage specified could allow wheels to come off while the vehicle is in motion, possibly causing loss of vehicle control and collision.

Install the tire and wheel assembly.

7. Note: If equipped with air suspension, reactivate the system by turning on the air suspension switch.

Lower the vehicle.