Nissan Car Altima & Sentra 1999-06

Wheel Bearings

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Adjustment



If the wheel hub bearing assembly is removed, it must be replaced.


NOTE
The wheel hub bearing assembly is not repairable; it must be replaced when defective.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Torque the wheel bearing locknut to 138-188 ft. lbs. (187-255 Nm).
  4.  
  5. Verify that the wheel bearings operate smoothly.
  6.  
  7. Install a new cotter pin into the spindle to hold the wheel bearing locknut.
  8.  
  9. Install a dial indicator to the rear wheel hub bearing assembly and check the axial end-play; it should be less than 0.0020 in. (0.05mm).
  10.  
  11. Install the grease cap.
  12.  
  13. If the axial end-play exceeds specifications, the wheel bearing must be replaced.
  14.  

If the wheel hub bearing assembly is removed, it must be replaced.


NOTE
The wheel hub bearing assembly is not repairable; it must be replaced when defective.

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Torque the wheel bearing locknut to 138-188 ft. lbs. (187-255 Nm).
  4.  
  5. Verify that the wheel bearings operate smoothly.
  6.  
  7. Install a new cotter pin into the spindle to hold the wheel bearing locknut.
  8.  
  9. Install a dial indicator to the rear wheel hub bearing assembly and check the axial end-play; it should be less than 0.0020 in. (0.05mm).
  10.  
  11. Install the grease cap.
  12.  
  13. If the axial end-play exceeds specifications, the wheel bearing must be replaced.
  14.  

The rear wheel bearings on the 240SX are not adjustable. Replace the bearing assembly if a growling noise is emitted during operation or if the bearing drags or turns roughly.

If the wheel hub bearing assembly is removed, it must be replaced.


NOTE
The wheel hub bearing assembly is not repairable; it must be replaced when defective.

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Torque the wheel bearing locknut to 138-188 ft. lbs. (187-255 Nm).
  4.  
  5. Verify that the wheel bearings operate smoothly.
  6.  
  7. Install a new cotter pin into the spindle to hold the wheel bearing locknut.
  8.  
  9. Install a dial indicator to the rear wheel hub bearing assembly and check the axial end-play; it should be less than 0.0020 in. (0.05mm).
  10.  
  11. Install the grease cap.
  12.  
  13. If the axial end-play exceeds specifications, the wheel bearing must be replaced.
  14.  

Removal & Installation



If the wheel hub bearing assembly is removed, it must be replaced.


NOTE
If the vehicle is equipped with Anti-Lock Brake (ABS), the sensor must be removed to protect the sensor and its wiring.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Raise and safely support the vehicle. Remove the rear wheel(s).
  4.  
  5. If equipped with disc brakes, remove or disconnect the following:

    Brake caliper and hang it by a piece of wire
     
    Brake caliper support
     
    Disc brake pads
     
    Brake rotor
     

  6.  
  7. If equipped with drum brakes, remove or disconnect the following:

    Brake drum
     
    Brake shoe assembly, if necessary
     
    Grease cap
     

  8.  
  9. Remove the cotter pin, wheel bearing locknut, washer and the wheel hub bearing assembly. A slide hammer may be needed to remove the hub bearing assembly.
  10.  


NOTE
The wheel hub bearing assembly is not repairable; it must be replaced when defective.

To install:


NOTE
If the vehicle is equipped with ABS, the sensor ring must be removed and installed on the new hub.

  1. Apply oil to the threaded portion of the spindle and both sides of the plain washer.
  2.  
  3. Install the wheel hub bearing assembly, the washer and the wheel bearing locknut. Torque the wheel bearing locknut to 138-188 ft. lbs. (187-255 Nm).
  4.  
  5. Verify that the wheel bearings operate smoothly.
  6.  
  7. Install or connect the following:

    New cotter pin into the spindle to hold the wheel bearing locknut
     

  8.  
  9. Install a dial micrometer to the rear wheel hub bearing assembly and check the axial end-play. It should be less than 0.0020 in. (0.05mm).

    Grease cap
     
    ABS sensor and its wiring, if removed
     
    Brake assembly and the wheels
     

  10.  

If the wheel hub bearing assembly is removed, it must be replaced.


NOTE
If the vehicle is equipped with Anti-Lock Brake (ABS), the sensor must be removed to protect the sensor and its wiring.

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Raise and safely support the vehicle. Remove the rear wheel(s).
  4.  
  5. If equipped with disc brakes, remove or disconnect the following:

    Brake caliper and hang it by a piece of wire
     
    Brake caliper support
     
    Disc brake pads
     
    Brake rotor
     

  6.  
  7. If equipped with drum brakes, remove or disconnect the following:

    Brake drum
     
    Brake shoe assembly, if necessary
     
    Grease cap
     

  8.  
  9. Remove the cotter pin, wheel bearing locknut, washer and the wheel hub bearing assembly. A slide hammer may be needed to remove the hub bearing assembly.
    NOTE
    The wheel hub bearing assembly is not repairable; it must be replaced when defective.

  10.  

To install:


NOTE
If the vehicle is equipped with ABS, the sensor ring must be removed and installed on the new hub.

  1. Apply oil to the threaded portion of the spindle and both sides of the plain washer.
  2.  
  3. Install the wheel hub bearing assembly, the washer and the wheel bearing locknut. Torque the wheel bearing locknut to 138-188 ft. lbs. (187-255 Nm).
  4.  
  5. Verify that the wheel bearings operate smoothly.
  6.  
  7. Install or connect the following:

    New cotter pin into the spindle to hold the wheel bearing locknut
     

  8.  
  9. Install a dial micrometer to the rear wheel hub bearing assembly and check the axial end-play. It should be less than 0.0020 in. (0.05mm).

    Grease cap
     
    ABS sensor and its wiring, if removed
     
    Brake assembly and the wheels
     

  10.  



Click image to see an enlarged view

Fig. Exploded view of wheel hub, bearing and components


CAUTION
Before removing the rear wheel hub assembly, disconnect the ABS wheel sensor from the assembly. Then move it away from the hub assembly. Failure to do so may result in damage to the sensor wires and the sensor becoming inoperative.

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove brake caliper assembly.
  4.  
  5. Remove wheel bearing lock nut
  6.  
  7. Remove brake rotor
  8.  
  9. Remove wheel hub bearing from spindle
    NOTE
    Brake hose does not need to be disconnected from brake caliper. Suspend caliper assembly with wire so as not to stretch brake hose. Be careful not to depress brake pedal, or piston will pop out. Make sure brake hose is not twisted.

  10.  
  11. Remove the ABS sensor rotor using suitable puller, drift and bearing replacer.
  12.  

To install:


NOTE
Do not reuse ABS sensor rotor. When installing, replace it with a new one.

  1. With vehicles equipped with ABS, press-fit ABS sensor rotor into wheel hub bearing using a drift.
    NOTE
    Before tightening, apply oil to threaded portion of rear spindle.

  2.  
  3. Install wheel hub bearing. Do not re-use wheel bearing lock-nut. Tighten to: 138-188 ft. lbs (187-255 Nm)
  4.  
  5. Check that the wheel bearings operate smoothly.
  6.  

 
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