Front Wheel Hub, Bearing And Seal Replacement (Heavy Duty)

Fig 1: Front Wheel Hub/Bearing Assembly And Seal (Heavy Duty)

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
Preliminary Procedures Separate {If equipped} Front Wheel Drive Shaft@Front Wheel Bearing and Hub Assembly - Front Wheel Drive Shaft Replacement - Left Side (Heavy Duty) or Front Wheel Drive Shaft Replacement - Right Side (Heavy Duty) Front Brake Rotor Replacement (JD9)Front Brake Rotor Replacement (J95) Disconnect the front wheel speed sensor electrical connector and detach the sensor retainers from the steering knuckle. Refer to Front Wheel Speed Sensor Replacement (Without 9C1)Front Wheel Speed Sensor Replacement (With 9C1)
1	Front Wheel Hub and Bearing Assembly Bolt [3x] CAUTION: Refer to Fastener Caution . NOTE: Vehicles equipped with aluminum steering knuckles come equipped with hardened steel washers located between the steering knuckle and the front wheel hub and bearing assembly bolts. The hardened steel washers MUST be reinstalled or the fastener tightening measurement may be inaccurate. Tighten 180 N.m (133 lb ft)
2	Front Wheel Hub and Bearing Assembly Procedure Remove the O-ring seal from the steering knuckle bore. Clean and inspect the O-ring seal and replace the seal if the following conditions exist: nicks, cuts, dry or brittle, compression set. Apply grease evenly and ensure complete coverage to the steering knuckle bearing pilot bore only. Refer to Adhesives, Fluids, Lubricants and Sealers NOTE: Avoid applying grease to any other machined surfaces, holes, or threads. Ensure the drain channel at the bottom of the bore is not blocked with grease or debris. The NEW front wheel hub and bearing assembly comes with a NEW front wheel speed sensor already installed.

Callout

Component Name

Preliminary Procedures

Separate {If equipped} Front Wheel Drive Shaft@Front Wheel Bearing and Hub Assembly - Front Wheel Drive Shaft Replacement - Left Side (Heavy Duty) or Front Wheel Drive Shaft Replacement - Right Side (Heavy Duty)
Front Brake Rotor Replacement (JD9)Front Brake Rotor Replacement (J95)
Disconnect the front wheel speed sensor electrical connector and detach the sensor retainers from the steering knuckle. Refer to Front Wheel Speed Sensor Replacement (Without 9C1)Front Wheel Speed Sensor Replacement (With 9C1)

Front Wheel Hub and Bearing Assembly Bolt [3x]

CAUTION: Refer to Fastener Caution .

NOTE:

Vehicles equipped with aluminum steering knuckles come equipped with hardened steel washers located between the steering knuckle and the front wheel hub and bearing assembly bolts.
The hardened steel washers MUST be reinstalled or the fastener tightening measurement may be inaccurate.

Tighten
180 N.m (133 lb ft)

Front Wheel Hub and Bearing Assembly

Procedure

Remove the O-ring seal from the steering knuckle bore.
Clean and inspect the O-ring seal and replace the seal if the following conditions exist: nicks, cuts, dry or brittle, compression set.
Apply grease evenly and ensure complete coverage to the steering knuckle bearing pilot bore only. Refer to Adhesives, Fluids, Lubricants and Sealers

NOTE:

Avoid applying grease to any other machined surfaces, holes, or threads. Ensure the drain channel at the bottom of the bore is not blocked with grease or debris.
The NEW front wheel hub and bearing assembly comes with a NEW front wheel speed sensor already installed.