Caliber 2007

Wheel Bearings

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Adjustment



Remove the wheel and tire assembly, disc brake caliper and brake rotor. Rotate the wheel hub checking for resistance or roughness. Any roughness or resistance to rotation may indicate dirt intrusion or a failed hub bearing. If the bearing exhibits any of these conditions, the hub and bearing will require replacement. Do not attempt to disassemble the bearing for repair. If the wheel bearing is disassembled for any reason, it must be replaced. Damaged bearing seals and the resulting excessive grease loss may also require bearing replacement. Moderate grease weapage from the bearing is considered normal and should not require replacement of the wheel bearing. To diagnose a bent hub, measure hub runout.

Removal & Installation



All Wheel Drive
  1. Raise and support the vehicle.
  2.  
  3. Remove the wheel mounting nuts, then the tire and wheel assembly.
  4.  
  5. Remove the cotter pin from the hub nut on the end of the axle half shaft.
  6.  
  7. While a helper applies the brakes to keep the hub from rotating, remove the hub nut and washer from the axle half shaft.
  8.  
  9. Tap the end of the half shaft inward, loosening it from the hub and bearing.
  10.  
  11. Remove the disc brake caliper lower guide pin bolt.
    CAUTION
    When moving rear brake caliper upward, use extreme care not to damage or overextend the flex hose. Damage may occur.

  12.  
  13. Rotate the caliper upward hinging off the upper guide pin bolt. Rotate the caliper upward just enough to allow brake rotor removal. Hang the caliper assembly in this position using wire or a bungee cord.
  14.  
  15. Remove any clips retaining the brake rotor to the wheel mounting studs.
  16.  
  17. Slide the brake rotor off the hub and bearing.
  18.  
  19. Unclip the wheel speed sensor head (1) from the retainer on the rear of the hub and bearing (2).

    Click image to see an enlarged view

    Fig. Unclip wheel speed sensor head (1) from retainer on the rear of hub and bearing (2).

  20.  
  21. Remove the four bolts securing the hub and bearing to the trailing link.
  22.  
  23. Remove the hub and bearing.
  24.  

To install:

  1. Slide the hub and bearing over the axle half shaft and position it on the brake support plate and trailing link.
  2.  
  3. Install the four bolts securing the hub and bearing to the trailing link. Tighten the bolts to 105 N·m (77 ft. lbs.).
  4.  
  5. Clip the wheel speed sensor head (flat side to bearing rear) into the retainer on the rear of the hub and bearing.
  6.  
  7. Slide the brake rotor over the parking brake shoes and onto the hub and bearing.
  8.  
  9. Rotate the disc brake caliper downward over the brake rotor and lower part of caliper adapter.
  10.  
  11. Install the disc brake caliper lower guide pin bolt. Tighten the guide pin bolt to 60 N·m (44 ft. lbs.).
  12.  
  13. Clean all foreign matter from the threads of the half shaft outer C/V joint.
  14.  
  15. Install the washer and hub nut on the end of the half shaft and snug it.
  16.  
  17. While a helper applies the brakes to keep the hub from rotating, tighten the hub nut to 245 N·m (181 ft. lbs.).
  18.  
  19. Insert the cotter pin through the notches in the nut and the hole in half shaft. If the notches in the nut do not line up with the hole in the half shaft, continue to tighten the nut until they do. Do not loosen the nut.
  20.  
  21. Wrap the cotter pin ends tightly around the lock nut.
  22.  
  23. Install tire and wheel assembly. Install and tighten wheel mounting nuts to 135 N·m (100 ft. lbs.).
  24.  
  25. Lower the vehicle.
  26.  
  27. Pump the brake pedal several times to ensure the vehicle has a firm brake pedal before moving it.
  28.  

Front Wheel Drive
  1. Raise and support the vehicle.
  2.  
  3. Remove the wheel mounting nuts, then the rear tire and wheel assembly.
  4.  
  5. Remove the disc brake caliper lower guide pin bolt.
    CAUTION
    When moving rear brake caliper upward, use extreme care not to damage or overextend the flex hose. Damage may occur.

  6.  
  7. Rotate the caliper upward hinging off the upper guide pin bolt. Rotate the caliper upward just enough to allow brake rotor removal. Hang the caliper assembly in this position using wire or a bungee cord.
  8.  
  9. Remove any clips retaining the brake rotor to the wheel mounting studs.
  10.  
  11. Slide the brake rotor off the hub and bearing.
  12.  
  13. Remove the screw (1) fastening the wheel speed sensor head (3) in the rear of the hub and bearing (2).

    Click image to see an enlarged view

    Fig. Screw (1) Hub and bearing (2) Wheel speed sensor head (3)

  14.  
  15. Remove the four bolts securing the hub and bearing to the trailing link.
  16.  
  17. Remove the hub and bearing.
  18.  

To install:


NOTE
If equipped, make sure the wheel speed sensor mount on the rear of the hub and bearing is directed toward the front of the vehicle.

  1. Position the hub and bearing on the brake support plate and trailing link.
  2.  
  3. Install the four bolts securing the hub and bearing to the trailing link. Tighten the bolts to 105 N·m (77 ft. lbs.).
    NOTE
    Before installing the wheel speed sensor head into the rear of the hub and bearing, inspect the O-ring seal to make sure it is not dislodged, split, cut or damaged in any way. Replace the O-ring as necessary.

  4.  
  5. If equipped with a wheel speed sensor, install the wheel speed sensor head into the rear of the hub and bearing.
  6.  
  7. If equipped with a wheel speed sensor, install the wheel speed sensor head mounting screw. Tighten the screw to 10 N·m (89 in. lbs.).
  8.  
  9. Slide the brake rotor over the parking brake shoes and onto the hub and bearing.
  10.  
  11. Rotate the disc brake caliper downward over the brake rotor and lower part of caliper adapter.
  12.  
  13. Install the disc brake caliper lower guide pin bolt. Tighten the guide pin bolt to 60 N·m (44 ft. lbs.).
  14.  
  15. Install tire and wheel assembly. Install and tighten wheel mounting nuts to 135 N·m (100 ft. lbs.).
  16.  
  17. Lower the vehicle.
  18.  
  19. Pump the brake pedal several times to ensure the vehicle has a firm brake pedal before moving it.
  20.  

Repacking



The rear wheel bearing and wheel mounting hub used on this vehicle are a one-piece sealed unit or hub and bearing assembly. It is permanently lubricated when assembled and is sealed for life. There is no periodic lubrication or maintenance recommended for these units.

 
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