Avalanche, Sierra, Silverado, C&K Series, 1999-2005

Wheel Bearings

Print

Adjustment




NOTE
The front wheel bearings on 1999 2-wheel drive vehicles are adjustable.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove the dust cap, cotter pin.
  4.  
  5. Loosen the spindle nut.
  6.  
  7. Spin the wheel hub by hand and tighten the nut until it is just snug-12 ft. lbs. (16 Nm) Back off the nut until it is loose, then tighten it finger-tight. Loosen the nut until either hole in the spindle lines up with a slot in the nut and insert a new cotter pin. There should be 0.001-0.008 in. (0.025-0.200mm) end-play. This can be measured with a dial indicator, if you wish.
  8.  
  9. Replace the dust cap, wheel and tire.

    Click image to see an enlarged view

    Fig. Use a dial indicator to measure the wheel bearing end-play-1999 2-wheel drive vehicles

  10.  


NOTE
The front wheel bearings on 2-wheel drive vehicles (exc. Silverado and 2000-01 vehicles) are adjustable.

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove the dust cap, cotter pin.
  4.  
  5. Loosen the spindle nut.
  6.  
  7. Spin the wheel hub by hand and tighten the nut until it is just snug-12 ft. lbs. (16 Nm) Back off the nut until it is loose, then tighten it finger-tight. Loosen the nut until either hole in the spindle lines up with a slot in the nut and insert a new cotter pin. There should be 0.001-0.008 in. (0.025-0.200mm) end-play. This can be measured with a dial indicator, if you wish.
  8.  
  9. Replace the dust cap, wheel and tire.

    Click image to see an enlarged view

    Fig. Use a dial indicator to measure the wheel bearing end-play-2-wheel drive vehicles

  10.  


NOTE
The front wheel bearings on 2-wheel drive vehicles (exc. 2000-01 vehicles) are adjustable.

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove the dust cap, cotter pin.
  4.  
  5. Loosen the spindle nut.
  6.  
  7. Spin the wheel hub by hand and tighten the nut until it is just snug-12 ft. lbs. (16 Nm) Back off the nut until it is loose, then tighten it finger-tight. Loosen the nut until either hole in the spindle lines up with a slot in the nut and insert a new cotter pin. There should be 0.001-0.008 in. (0.025-0.200mm) end-play. This can be measured with a dial indicator, if you wish.
  8.  
  9. Replace the dust cap, wheel and tire.

    Click image to see an enlarged view

    Fig. Use a dial indicator to measure the wheel bearing end-play-2-wheel drive vehicles

  10.  

2-Wheel Drive

NOTE
The front wheel bearings on 2-wheel drive vehicles (exc. Silverado and 2000-01 vehicles) are adjustable.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove the dust cap, cotter pin.
  4.  
  5. Loosen the spindle nut.
  6.  
  7. Spin the wheel hub by hand and tighten the nut until it is just snug-12 ft. lbs. (16 Nm) Back off the nut until it is loose, then tighten it finger-tight. Loosen the nut until either hole in the spindle lines up with a slot in the nut and insert a new cotter pin. There should be 0.001-0.008 in. (0.025-0.200mm) end-play. This can be measured with a dial indicator, if you wish.
  8.  
  9. Replace the dust cap, wheel and tire.

    Click image to see an enlarged view

    Fig. Use a dial indicator to measure the wheel bearing end-play-2-wheel drive vehicles

  10.  

Removal & Installation



  1. Raise and support the vehicle.
  2.  
  3. Remove or disconnect the following:

    Tire and wheel assembly
     
    Caliper and rotor
     
    Wheel speed sensor and brake hose mounting bracket bolt from the steering knuckle
     
    Electrical connection for the wheel speed sensor
     
    Front drive halfshaft assembly on four wheel drive models
     
    Hub and bearing assembly mounting bolts
     
    Hub and bearing assembly
     
    O-ring seal from the steering knuckle bore (2500 series)
     

  4.  
  5. Clean and inspect the O-ring seal (2500 series).

    Click image to see an enlarged view

    Fig. Exploded view of the front hub assembly-2500 shown, 1500 similar

  6.  

To install:

  1. Clean all corrosion or contaminates from the steering knuckle bore and the hub and bearing assembly.
  2.  
  3. Install the O-ring to the steering knuckle (2500 series).
  4.  
  5. Lubricate the steering knuckle bore with wheel bearing grease or the equivalent.
  6.  
  7. Install or connect the following:

    Hub and bearing assembly
     
    Hub and bearing assembly mounting bolts. Tighten the bolts to 133 ft. lbs. (180 Nm).
     
    Front drive halfshaft assembly on four wheel drive models
     
    Electrical connection for the wheel speed sensor
     
    Wheel speed sensor and brake hose mounting bracket bolt to the steering knuckle. Tighten to 106 inch lbs. (12 Nm).
     
    Rotor
     
    Tire and wheel assembly.
     

  8.  

  1. Raise and support the vehicle.
  2.  
  3. Remove or disconnect the following:

    Tire and wheel assembly
     
    Caliper and rotor
     
    Wheel speed sensor and brake hose mounting bracket bolt from the steering knuckle
     
    Electrical connection for the wheel speed sensor
     
    Front drive halfshaft assembly on four wheel drive models
     
    Hub and bearing assembly mounting bolts
     
    Hub and bearing assembly
     
    O-ring seal from the steering knuckle bore (2500 series)
     

  4.  
  5. Clean and inspect the O-ring seal (2500 series).

    Click image to see an enlarged view

    Fig. Exploded view of the front hub assembly-2500 shown, 1500 similar

  6.  

To install:

  1. Clean all corrosion or contaminates from the steering knuckle bore and the hub and bearing assembly.
  2.  
  3. Install the O-ring to the steering knuckle (2500 series).
  4.  
  5. Lubricate the steering knuckle bore with wheel bearing grease or the equivalent.
  6.  
  7. Install or connect the following:

    Hub and bearing assembly
     
    Hub and bearing assembly mounting bolts. Tighten the bolts to 133 ft. lbs. (180 Nm).
     
    Front drive halfshaft assembly on four wheel drive models
     
    Electrical connection for the wheel speed sensor
     
    Wheel speed sensor and brake hose mounting bracket bolt to the steering knuckle. Tighten to 106 inch lbs. (12 Nm).
     
    Rotor
     
    Tire and wheel assembly.
     

  8.  

2-Wheel Drive


Click image to see an enlarged view

Fig. Exploded view of the front wheel bearing and related components-2-wheel drive models

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:
    CAUTION
    Do not drop the wheel bearings.



    Wheel.
     
    Caliper and wire it out of the way
     
    Grease cap
     
    Cotter pin, spindle nut, and washer
     
    Hub.
     



    Outer roller bearing assembly from the hub
     

  4.  
  5. The inner bearing assembly will remain in the hub and may be removed after prying out the inner seal. Discard the seal.
  6.  
  7. Clean all parts in a non-flammable solvent and let them air dry. Never spin-dry a bearing with compressed air! Check for excessive wear and damage.
  8.  
  9. If necessary for replacement, remove the bearing races from the hub using a hammer and drift. They are driven out from the inside out.
  10.  

To install:

  1. Install or connect the following:

    New bearing races, if required. When installing new races, ensure that they are not cocked and that they are fully seated against the hub shoulder.
     

  2.  
  3. Pack both wheel bearings using high melting point wheel bearing grease for disc brakes.

    Inner bearing in the hub and a new inner seal, making sure that the seal flange faces the bearing race.
     
    Wheel hub over the spindle
     
    Outer bearing into the hub
     
    Spindle washer and nut
     

  4.  
  5. Spin the wheel hub by hand and tighten the nut until it is just snug-12 ft. lbs. (16 Nm) Back off the nut until it is loose, then tighten it finger-tight. Loosen the nut until either hole in the spindle lines up with a slot in the nut and insert a new cotter pin. There should be 0.001-0.008 in. (0.025-0.200mm) end-play. This can be measured with a dial indicator, if you wish.
  6.  
  7. Replace the dust cap, wheel and tire.
  8.  

  1. Raise and support the vehicle.
  2.  
  3. Remove the tire and wheel.
  4.  
  5. Remove the caliper and rotor.
  6.  
  7. Remove the wheel speed sensor and brake hose mounting bracket bolt from the steering knuckle.
  8.  
  9. Remove the wheel hub and bearing mounting bolts.
  10.  
  11. Remove the wheel hub and bearing and splash shield from the vehicle.
  12.  
  13. Remove the O-ring seal from the steering knuckle bore on 25/35 series.
  14.  
  15. Remove the wheel speed sensor mounting bolt.
  16.  
  17. Clean and inspect the O-ring seal. Replace it if it is nicked, cut or dry.
  18.  

To install:

  1. Clean all corrosion or contaminates from the steering knuckle bore and the hub and bearing.
  2.  
  3. Lubricate the steering knuckle bore with wheel bearing grease or the equivalent.
  4.  
  5. Install the O-ring to the steering knuckle on 25/35 series.
  6.  
  7. Install the wheel speed sensor mounting bolt.
  8.  
  9. Install the wheel hub and bearing and splash shield.
  10.  
  11. Install the wheel hub and the bearing mounting bolts and tighten to 133 ft. lbs. (180 Nm).
  12.  
  13. Install the wheel speed sensor and brake hose mounting bracket bolt to the steering knuckle.
  14.  
  15. Install the rotor and caliper.
  16.  
  17. Install the tire and wheel.
  18.  
  19. Lower the vehicle.

    Click image to see an enlarged view

    Fig. 2WD/4WD front hub-15 Series Avalanche, Sierra and Silverado



    Click image to see an enlarged view

    Fig. 2WD/4WD front hub -25 Series Avalanche, Sierra and Silverado

  20.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:
    CAUTION
    Do not drop the wheel bearings.



    Wheel.
     
    Caliper and wire it out of the way
     
    Grease cap
     
    Cotter pin, spindle nut, and washer
     
    Hub.
     



    Outer roller bearing assembly from the hub
     

  4.  
  5. The inner bearing assembly will remain in the hub and may be removed after prying out the inner seal. Discard the seal.
  6.  
  7. Clean all parts in a non-flammable solvent and let them air dry. Never spin-dry a bearing with compressed air! Check for excessive wear and damage.
  8.  
  9. If necessary for replacement, remove the bearing races from the hub using a hammer and drift. They are driven out from the inside out.

    Click image to see an enlarged view

    Fig. Exploded view of the front wheel bearing and related components-1999 2-wheel drive models

  10.  

To install:

  1. Install or connect the following:

    New bearing races, if required. When installing new races, ensure that they are not cocked and that they are fully seated against the hub shoulder.
     

  2.  
  3. Pack both wheel bearings using high melting point wheel bearing grease for disc brakes.

    Inner bearing in the hub and a new inner seal, making sure that the seal flange faces the bearing race.
     
    Wheel hub over the spindle
     
    Outer bearing into the hub
     
    Spindle washer and nut
     

  4.  
  5. Spin the wheel hub by hand and tighten the nut until it is just snug-12 ft. lbs. (16 Nm) Back off the nut until it is loose, then tighten it finger-tight. Loosen the nut until either hole in the spindle lines up with a slot in the nut and insert a new cotter pin. There should be 0.001-0.008 in. (0.025-0.200mm) end-play. This can be measured with a dial indicator, if you wish.
  6.  
  7. Replace the dust cap, wheel and tire.
  8.  



Click image to see an enlarged view

Fig. Exploded view of the front wheel bearing and related components-2-wheel drive models

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove or disconnect the following:
    CAUTION
    Do not drop the wheel bearings.



    Wheel.
     
    Caliper and wire it out of the way
     
    Grease cap
     
    Cotter pin, spindle nut, and washer
     
    Hub.
     



    Outer roller bearing assembly from the hub
     

  4.  
  5. The inner bearing assembly will remain in the hub and may be removed after prying out the inner seal. Discard the seal.
  6.  
  7. Clean all parts in a non-flammable solvent and let them air dry. Never spin-dry a bearing with compressed air! Check for excessive wear and damage.
  8.  
  9. If necessary for replacement, remove the bearing races from the hub using a hammer and drift. They are driven out from the inside out.
  10.  

To install:

  1. Install or connect the following:

    New bearing races, if required. When installing new races, ensure that they are not cocked and that they are fully seated against the hub shoulder.
     

  2.  
  3. Pack both wheel bearings using high melting point wheel bearing grease for disc brakes.

    Inner bearing in the hub and a new inner seal, making sure that the seal flange faces the bearing race.
     
    Wheel hub over the spindle
     
    Outer bearing into the hub
     
    Spindle washer and nut
     

  4.  
  5. Spin the wheel hub by hand and tighten the nut until it is just snug-12 ft. lbs. (16 Nm) Back off the nut until it is loose, then tighten it finger-tight. Loosen the nut until either hole in the spindle lines up with a slot in the nut and insert a new cotter pin. There should be 0.001-0.008 in. (0.025-0.200mm) end-play. This can be measured with a dial indicator, if you wish.
  6.  
  7. Replace the dust cap, wheel and tire.
  8.  

4-Wheel Drive

"K" Series (4WD) vehicles have sealed front wheel bearings that are pre-adjusted and require no lubrication maintenance. Darkened areas on the bearing assembly are caused by a heat treatment process and do not require bearing replacement.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:
    NOTE
    Wrap shop towels around the CV-Joint boots to protect them from damage during this procedure.



    Wheel
     



    Brake caliper and support it aside
     
    Brake rotor
     
    Cotter pin, retainer, castle nut, and thrust washer from the axle shaft
     
    Tie rod end from the knuckle
     
    Hub/bearing assembly retaining bolts
     

  4.  
  5. Using a J-28733-B hub/bearing puller tool or equivalent, press the hub/bearing assembly from the splined shaft.
    WARNING
    After removal, lay the hub and bearing assembly on the outboard side. This will prevent damage and/or contamination of the bearing seal.



    Click image to see an enlarged view

    Fig. Exploded view of the front hub and knuckle assembly-4-wheel drive



    Splash shield
     

  6.  
  7. Support the lower control arm with a jack stand.

    Upper and lower ball joints from the steering knuckle
     
    Steering knuckle
     
    Seal from the steering knuckle
     

  8.  

To install:

  1. Install or connect the following:

    New seal in the steering knuckle, using a J 36605 seal installer
     
    Steering knuckle on the ball joints and the retaining nuts. Torque the upper ball joint nut to 74 ft. lbs. (100 Nm) and the lower ball joint nut to 94 ft. lbs. (128 Nm) Tighten the nuts to align the holes for cotter pin insertion, but do NOT tighten more than an additional 1 / 6 turn.
     
    Splash shield
     
    Hub/bearing assembly over the splined shaft, making sure the splines line up correctly. Torque the bolts to 133 ft. lbs. (180 Nm)
     
    Tie rod end at the steering knuckle
     
    Thrust washer and axle nut, Torque the nut to 165 ft. lbs. (225 Nm).
     
    Retainer and cotter pin
     
    Rotor and caliper
     

  2.  
  3. Remove the shop towels from the CV-Joint boot.

    Tire and wheel assemblies
     

  4.  
  5. Check and adjust the front end alignment and road test the vehicle.
  6.  

  1. Raise and support the vehicle.
  2.  
  3. Remove or disconnect the following:

    Tire and wheel assembly
     
    Caliper and rotor
     
    Wheel speed sensor and brake hose mounting bracket bolt from the steering knuckle
     
    Electrical connection for the wheel speed sensor
     
    Front drive halfshaft assembly
     
    Hub and bearing assembly mounting bolts
     
    Hub and bearing assembly
     
    O-ring seal from the steering knuckle bore (25 Series)
     

  4.  
  5. Clean and inspect the O-ring seal (25 Series).

    Click image to see an enlarged view

    Fig. 4WD front hub-15 Series Silverado



    Click image to see an enlarged view

    Fig. 4WD front hub-25 Series Silverado

  6.  

To install:

  1. Clean all corrosion or contaminates from the steering knuckle bore and the hub and bearing assembly.
  2.  
  3. Install the O-ring to the steering knuckle (25 Series).
  4.  
  5. Lubricate the steering knuckle bore with wheel bearing grease or the equivalent.
  6.  
  7. Install or connect the following:

    Hub and bearing assembly
     
    Hub and bearing assembly mounting bolts. Tighten the bolts to 133 ft. lbs. (180 Nm).
     
    Front drive halfshaft assembly
     
    Electrical connection for the wheel speed sensor
     
    Wheel speed sensor and brake hose mounting bracket bolt to the steering knuckle. Tighten to 106 inch lbs. (12 Nm).
     
    Rotor
     
    Tire and wheel assembly.
     

  8.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  

"K" Series (4WD) vehicles have sealed front wheel bearings that are pre-adjusted and require no lubrication maintenance. Darkened areas on the bearing assembly are caused by a heat treatment process and do not require bearing replacement.

  1. Remove or disconnect the following:
    NOTE
    Wrap shop towels around the CV-Joint boots to protect them from damage during this procedure.



    Wheel
     



    Brake caliper and support it aside
     
    Brake rotor
     
    Cotter pin, retainer, castle nut, and thrust washer from the axle shaft
     
    Tie rod end from the knuckle
     
    Hub/bearing assembly retaining bolts
     

  2.  
  3. Using a J-28733-B hub/bearing puller tool or equivalent, press the hub/bearing assembly from the splined shaft.
    WARNING
    After removal, lay the hub and bearing assembly on the outboard side. This will prevent damage and/or contamination of the bearing seal.



    Click image to see an enlarged view

    Fig. Exploded view of the front hub and knuckle assembly-1999 4-wheel drive



    Splash shield
     

  4.  
  5. Support the lower control arm with a jack stand.

    Upper and lower ball joints from the steering knuckle
     
    Steering knuckle
     
    Seal from the steering knuckle
     

  6.  

To install:

  1. Install or connect the following:

    New seal in the steering knuckle, using a J 36605 seal installer
     
    Steering knuckle on the ball joints and the retaining nuts. Torque the upper ball joint nut to 74 ft. lbs. (100 Nm) and the lower ball joint nut to 94 ft. lbs. (128 Nm) Tighten the nuts to align the holes for cotter pin insertion, but do NOT tighten more than an additional 1 / 6 turn.
     
    Splash shield
     
    Hub/bearing assembly over the splined shaft, making sure the splines line up correctly. Torque the bolts to 133 ft. lbs. (180 Nm)
     
    Tie rod end at the steering knuckle
     
    Thrust washer and axle nut, Torque the nut to 165 ft. lbs. (225 Nm).
     
    Retainer and cotter pin
     
    Rotor and caliper
     

  2.  
  3. Remove the shop towels from the CV-Joint boot.

    Tire and wheel assemblies
     

  4.  
  5. Check and adjust the front end alignment and road test the vehicle.
  6.  

"K" Series (4WD) vehicles have sealed front wheel bearings that are pre-adjusted and require no lubrication maintenance. Darkened areas on the bearing assembly are caused by a heat treatment process and do not require bearing replacement.

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove or disconnect the following:
    NOTE
    Wrap shop towels around the CV-Joint boots to protect them from damage during this procedure.



    Wheel
     



    Brake caliper and support it aside
     
    Brake rotor
     
    Cotter pin, retainer, castle nut, and thrust washer from the axle shaft
     
    Tie rod end from the knuckle
     
    Hub/bearing assembly retaining bolts
     

  4.  
  5. Using a J-28733-B hub/bearing puller tool or equivalent, press the hub/bearing assembly from the splined shaft.
    WARNING
    After removal, lay the hub and bearing assembly on the outboard side. This will prevent damage and/or contamination of the bearing seal.



    Click image to see an enlarged view

    Fig. Exploded view of the front hub and knuckle assembly-4-wheel drive



    Splash shield
     

  6.  
  7. Support the lower control arm with a jack stand.

    Upper and lower ball joints from the steering knuckle
     
    Steering knuckle
     
    Seal from the steering knuckle
     

  8.  

To install:

  1. Install or connect the following:

    New seal in the steering knuckle, using a J 36605 seal installer
     
    Steering knuckle on the ball joints and the retaining nuts. Torque the upper ball joint nut to 74 ft. lbs. (100 Nm) and the lower ball joint nut to 94 ft. lbs. (128 Nm) Tighten the nuts to align the holes for cotter pin insertion, but do NOT tighten more than an additional 1 / 6 turn.
     
    Splash shield
     
    Hub/bearing assembly over the splined shaft, making sure the splines line up correctly. Torque the bolts to 133 ft. lbs. (180 Nm)
     
    Tie rod end at the steering knuckle
     
    Thrust washer and axle nut, Torque the nut to 165 ft. lbs. (225 Nm).
     
    Retainer and cotter pin
     
    Rotor and caliper
     

  2.  
  3. Remove the shop towels from the CV-Joint boot.

    Tire and wheel assemblies
     

  4.  
  5. Check and adjust the front end alignment and road test the vehicle.
  6.  

 
label.common.footer.alt.autozoneLogo