Infiniti Car 1998-05

Wheel Bearings

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Click image to see an enlarged view

Fig. Hub and bearing assembly-G20

Adjustment



The wheel bearing assemblies on all models are pressed in and are not adjustable. If the bearing assembly does not turn smoothly or has more than 0.002 in. (0.05mm) of axial play, replace the bearing assembly.

Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Raise and support the vehicle safely.
  4.  
  5. Remove or disconnect the following:

    Rear caliper and rotor. Hang the caliper from the body with wire, do not let hang by the brake hose.
     
    Rear wheel hub cap, cotter pin and locknut
     
    Hub off the stub axle
     

  6.  


NOTE
The wheel bearing is integral with the hub and cannot be serviced separately.

To install:

  1. Install or connect the following:

    New hub assembly onto the axle stub
     

  2.  
  3. Replace the washer and wheel bearing locknut. Torque the locknut to 137-174 ft lbs. (186-235 Nm). Install a new cotter pin.

    Brake rotor, caliper and wheel
     

  4.  
  5. Lower the vehicle to the ground.
  6.  


NOTE
If the vehicle is equipped with Anti-lock Brakes (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. Remove or disconnect the following:

    Both rear wheels
     
    Wheel speed sensor
     
    Brake caliper and hang it by a piece of wire
     
    Brake caliper support
     
    Disc brake pads
     
    Brake disc
     
    Grease cap
     
    Cotter pin, wheel bearing locknut, washer, and the wheel hub bearing assembly. A slide hammer may be needed to remove the hub bearing assembly.
     

  4.  


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

To install:

  1. Install or connect the following:

    Wheel hub bearing assembly, the washer and the wheel bearing locknut. Torque the wheel bearing locknut to 137-188 ft. lbs. (186-255 Nm).
     

  2.  
  3. Verify that the wheel bearings operate smoothly.

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

  4.  
  5. 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 wheel sensor and its wiring
     
    Brake assembly and the wheels
     

  6.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Cotter pin and adjusting cap and loosen the wheel bearing nut. Carefully tap the end of the axle shaft or use a puller to loosen the shaft from the hub.
     
    Brake caliper and rotor. Do not let the caliper hang by the brake hose, support it with wire.
     
    Parking brake assembly
     
    Nuts and through-bolts to remove the axle housing from the suspension. If equipped with rear wheel steering, use a ball joint press to separate the tie rod end.
     
    4 bolts at the back and remove the bearing flange and hub from the bearing housing
     

  4.  
  5. Press the hub out of the bearing flange and use a puller to remove the bearing from the hub. If it is not damaged, the hub can be used again but the bearing and flange are supplied as a single unit.
  6.  

To install:


NOTE
The wheel bearing and flange are supplied as an assembly.

  1. Place the hub on a press table and press the new bearing and flange onto the hub. Be sure the press tool contacts only the inner bearing race and take care not to damage the seal.
  2.  
  3. Install or connect the following:

    Bearing flange onto the axle housing. Torque the bolts to 58-72 ft. lbs. (78-98 Nm).
     
    Axle housing onto the lower ball joint, torque the nut to 58-69 ft. lbs. (78-93 Nm) and install a new cotter pin
     
    Torque the tie rod end nut to 33-44 ft. lbs. (45-60 Nm) and install a new cotter pin, if equipped with rear wheel steering
     
    Axle shaft into the hub and install the bolts through the suspension bushings. Tighten the bolts temporarily, they will be tightened with the vehicle resting on the wheels.
     
    Brake components and apply the brake to hold the hub from turning
     
    Wheel bearing locknut and torque it to 152-203 ft. lbs. (206-275 Nm)
     
    Insulator and adjusting cap and a new cotter pin
     
    Wheel and lower the vehicle to the ground. Torque the suspension bushing bolts to 57-72 ft. lbs. (77-98 Nm).
     

  4.  

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Raise and support the vehicle safely.
  4.  
  5. Remove or disconnect the following:
    NOTE
    The wheel bearing is integral with the hub and cannot be serviced separately.



    Rear caliper and rotor. Hang the caliper from the body with wire, do not let hang by the brake hose
     
    Rear wheel hub cap, cotter pin and locknut
     
    Hub off the stub axle
     

  6.  

To install:

  1. Install or connect the following:

    New hub assembly onto the axle stub
     

  2.  
  3. Replace the washer and wheel bearing locknut. Torque the locknut to 137-174 ft lbs. (186-235 Nm). Install a new cotter pin

    Brake rotor, caliper and wheel
     

  4.  
  5. Lower the vehicle to the ground.
  6.  


NOTE
If the vehicle is equipped with 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. Remove or disconnect the following:
    NOTE
    The wheel hub bearing assembly is not repairable; it must be replaced when defective.



    Both rear wheels
     
    Wheel speed sensor
     
    Brake caliper and hang it by a piece of wire
     
    Brake caliper support
     
    Disc brake pads
     
    Brake disc
     
    Grease cap
     
    Cotter pin, wheel bearing locknut, washer, and the wheel hub bearing assembly. A slide hammer may be needed to remove the hub bearing assembly.
     

  4.  

To install:

  1. Install or connect the following:

    Wheel hub bearing assembly, the washer and the wheel bearing locknut. Torque the wheel bearing locknut to 137-188 ft. lbs. (186-255 Nm)
     

  2.  
  3. Verify that the wheel bearings operate smoothly.

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

  4.  
  5. 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 wheel sensor and its wiring
     
    Brake assembly and the wheels
     

  6.  

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove or disconnect the following:

    Cotter pin and adjusting cap and loosen the wheel bearing nut. Carefully tap the end of the axle shaft or use a puller to loosen the shaft from the hub
     
    Brake caliper and rotor. Do not let the caliper hang by the brake hose, support it with wire.
     
    Parking brake assembly
     
    Nuts and through-bolts to remove the axle housing from the suspension. If equipped with rear wheel steering, use a ball joint press to separate the tie rod end
     
    4 bolts at the back and remove the bearing flange and hub from the bearing housing
     

  4.  
  5. Press the hub out of the bearing flange and use a puller to remove the bearing from the hub. If it is not damaged, the hub can be used again but the bearing and flange are supplied as a single unit.
  6.  

To install:


NOTE
The wheel bearing and flange are supplied as an assembly.

  1. Place the hub on a press table and press the new bearing and flange onto the hub. Be sure the press tool contacts only the inner bearing race and take care not to damage the seal.
  2.  
  3. Install or connect the following:

    Bearing flange onto the axle housing. Torque the bolts to 58-72 ft. lbs. (78-98 Nm)
     
    Axle housing onto the lower ball joint, torque the nut to 58-69 ft. lbs. (78-93 Nm) and install a new cotter pin
     
    Torque the tie rod end nut to 33-44 ft. lbs. (45-60 Nm) and install a new cotter pin, if equipped with rear wheel steering
     
    Axle shaft into the hub and install the bolts through the suspension bushings. Tighten the bolts temporarily, they will be tightened with the vehicle resting on the wheels
     
    Brake components and apply the brake to hold the hub from turning
     
    Wheel bearing locknut and torque it to 152-203 ft. lbs. (206-275 Nm)
     
    Insulator and adjusting cap and a new cotter pin
     
    Wheel and lower the vehicle to the ground. Torque the suspension bushing bolts to 57-72 ft. lbs. (77-98 Nm)
     

  4.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Raise and support the vehicle safely.
  4.  
  5. Remove or disconnect the following:
    NOTE
    The wheel bearing is integral with the hub and cannot be serviced separately.



    Rear caliper and rotor. Hang the caliper from the body with wire, do not let hang by the brake hose
     
    Rear wheel hub cap, cotter pin and locknut
     
    Hub off the stub axle
     

  6.  

To install:

  1. Install or connect the following:

    New hub assembly onto the axle stub
     

  2.  
  3. Replace the washer and wheel bearing locknut. Torque the locknut to 137-174 ft lbs. (186-235 Nm). Install a new cotter pin

    Brake rotor, caliper and wheel
     

  4.  
  5. Lower the vehicle to the ground.
  6.  



Click image to see an enlarged view

Fig. Hub and bearing assembly-I30


NOTE
If the vehicle is equipped with 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. Remove or disconnect the following:
    NOTE
    The wheel hub bearing assembly is not repairable; it must be replaced when defective.



    Both rear wheels
     
    Wheel speed sensor
     
    Brake caliper and hang it by a piece of wire
     
    Brake caliper support
     
    Disc brake pads
     
    Brake disc
     
    Grease cap
     
    Cotter pin, wheel bearing locknut, washer, and the wheel hub bearing assembly. A slide hammer may be needed to remove the hub bearing assembly.
     

  4.  

To install:

  1. Install or connect the following:

    Wheel hub bearing assembly, the washer and the wheel bearing locknut. Torque the wheel bearing locknut to 137-188 ft. lbs. (186-255 Nm)
     

  2.  
  3. Verify that the wheel bearings operate smoothly.

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

  4.  
  5. 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 wheel sensor and its wiring
     
    Brake assembly and the wheels
     

  6.  



Click image to see an enlarged view

Fig. Hub and bearing assembly-1998-2001 Q45

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Cotter pin and adjusting cap and loosen the wheel bearing nut. Carefully tap the end of the axle shaft or use a puller to loosen the shaft from the hub
     
    Brake caliper and rotor. Do not let the caliper hang by the brake hose, support it with wire.
     
    Parking brake assembly
     
    Nuts and through-bolts to remove the axle housing from the suspension. If equipped with rear wheel steering, use a ball joint press to separate the tie rod end
     
    4 bolts at the back and remove the bearing flange and hub from the bearing housing
     

  4.  
  5. Press the hub out of the bearing flange and use a puller to remove the bearing from the hub. If it is not damaged, the hub can be used again but the bearing and flange are supplied as a single unit.
  6.  

To install:


NOTE
The wheel bearing and flange are supplied as an assembly.

  1. Place the hub on a press table and press the new bearing and flange onto the hub. Be sure the press tool contacts only the inner bearing race and take care not to damage the seal.
  2.  
  3. Install or connect the following:

    Bearing flange onto the axle housing. Torque the bolts to 58-72 ft. lbs. (78-98 Nm)
     
    Axle housing onto the lower ball joint, torque the nut to 58-69 ft. lbs. (78-93 Nm) and install a new cotter pin
     
    Torque the tie rod end nut to 33-44 ft. lbs. (45-60 Nm) and install a new cotter pin, if equipped with rear wheel steering
     
    Axle shaft into the hub and install the bolts through the suspension bushings. Tighten the bolts temporarily, they will be tightened with the vehicle resting on the wheels
     
    Brake components and apply the brake to hold the hub from turning
     
    Wheel bearing locknut and torque it to 152-203 ft. lbs. (206-275 Nm)
     
    Insulator and adjusting cap and a new cotter pin
     
    Wheel and lower the vehicle to the ground. Torque the suspension bushing bolts to 57-72 ft. lbs. (77-98 Nm)
     

  4.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Raise and support the vehicle safely.
  4.  
  5. Remove or disconnect the following:
    NOTE
    The wheel bearing is integral with the hub and cannot be serviced separately.



    Rear caliper and rotor. Hang the caliper from the body with wire, do not let hang by the brake hose.
     
    Rear wheel hub cap, cotter pin and locknut
     
    Hub off the stub axle
     

  6.  

To install:

Click image to see an enlarged view

Fig. Rear hub and related parts-2002 G20

  1. Install or connect the following:

    New hub assembly onto the axle stub
     

  2.  
  3. Replace the washer and wheel bearing locknut. Torque the locknut to 137-174 ft lbs. (186-235 Nm). Install a new cotter pin.

    Brake rotor, caliper and wheel
     

  4.  
  5. Lower the vehicle to the ground.
  6.  



Click image to see an enlarged view

Fig. Rear hub and related components-I35

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.

Wheel hub bearing does not require maintenance. If any of the following symptoms are noted, replace wheel hub bearing assembly.

  1. Growling noise is emitted from wheel hub bearing during operation.
  2.  
  3. Wheel hub bearing drags or turns roughly. This occurs when turning hub by hand after bearing lock nut is tightened to specified torque.
  4.  

  1. Remove brake caliper assembly.
  2.  
  3. Remove wheel bearing lock nut.
  4.  
  5. Remove brake rotor.
  6.  
  7. 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.


    WARNING
    Be careful not to depress brake pedal, or piston will pop out. Make sure brake hose is not twisted.

  8.  
  9. Remove the sensor rotor using suitable puller, drift and bearing replacer.
  10.  

To install:

  1. With vehicles equipped with ABS, press-fit ABS sensor rotor into wheel hub bearing using a drift.
    NOTE
    Do not reuse ABS sensor rotor. When installing, replace it with a new one.

  2.  
  3. Press-fit ABS sensor rotor as far as the location shown.

    Click image to see an enlarged view

    Fig. Press-fit ABS sensor rotor-I35

  4.  
  5. Install wheel hub bearing. Before tightening, apply oil to threaded portion of rear spindle.
    NOTE
    Do not reuse wheel bearing lock nut.

  6.  
  7. Tighten wheel bearing lock nut to 187-254 Nm (138-188 ft. lbs.)
  8.  
  9. Check that wheel bearings operate smoothly.
  10.  
  11. Check wheel hub bearing axial end play. Axial end play should be less than 0.05 mm (0.0020 in.)
  12.  
  13. Stake the lock nut in two places.
  14.  
  15. Install hub cap using a suitable tool.
    NOTE
    Do not reuse hub cap. When installing, replace it with a new one.

  16.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Cotter pin and adjusting cap and loosen the wheel bearing nut. Carefully tap the end of the axle shaft or use a puller to loosen the shaft from the hub.
     
    Brake caliper and rotor. Do not let the caliper hang by the brake hose, support it with wire.
     
    Parking brake assembly
     
    Nuts and through-bolts to remove the axle housing from the suspension. If equipped with rear wheel steering, use a ball joint press to separate the tie rod end.
     
    4 bolts at the back and remove the bearing flange and hub from the bearing housing
     

  4.  
  5. Press the hub out of the bearing flange and use a puller to remove the bearing from the hub. If it is not damaged, the hub can be used again but the bearing and flange are supplied as a single unit.

    Click image to see an enlarged view

    Fig. Rear hub and related components-Q45



    Click image to see an enlarged view

    Fig. Rear hub and related components-G35

  6.  

To install:


NOTE
Refer to the exploded view for tightening values.


NOTE
The wheel bearing and flange are supplied as an assembly.

  1. Place the hub on a press table and press the new bearing and flange onto the hub. Be sure the press tool contacts only the inner bearing race and take care not to damage the seal.
  2.  
  3. Install or connect the following:

    Bearing flange onto the axle housing.
     
    Axle housing onto the lower ball joint, and install a new cotter pin
     
    Torque the tie rod end nut to 33-44 ft. lbs. (45-60 Nm) and install a new cotter pin, if equipped with rear wheel steering
     
    Axle shaft into the hub and install the bolts through the suspension bushings. Tighten the bolts temporarily, they will be tightened with the vehicle resting on the wheels.
     
    Brake components and apply the brake to hold the hub from turning
     
    Wheel bearing locknut and torque it to 152-203 ft. lbs. (206-275 Nm)
     
    Insulator and adjusting cap and a new cotter pin
     
    Wheel and lower the vehicle to the ground. Torque the suspension bushing bolts to 57-72 ft. lbs. (77-98 Nm).
     

  4.  

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Raise and support the vehicle.
  4.  
  5. Remove or disconnect the following:

    Rear tires
     
    Axle shaft nut
     
    Brake caliper and rotor. Hang the caliper from the body with wire, do not let it hang by the brake hose.
     
    Radius rod bolts and nuts
     
    Lower link nuts and bolts
     
    Coil spring
     
    Lower shock bolts
     
    Axle shaft
     
    Suspension arm ball joint
     
    Wheel hub and bearing assembly
     
    Use a puller, drift and bearing replacer and press the wheel bearing outer race off the hub
     
    Use a drift and remove the wheel bearing from the hub

    Click image to see an enlarged view

    Fig. Exploded view of the rear hub and bearing-M45



    Click image to see an enlarged view

    Fig. Exploded view of the rear hub and bearing-2004 Q45

     

  6.  

To install:

  1. Be sure all parts are clean. Carefully press the hub into the new bearing. Be sure the press tool does not contact the inner bearing race. Do not exceed 11,000 lbs. (5000kg) pressure.
  2.  
  3. Install backing plate and the hub and bearing assembly.
  4.  
  5. Reverse the remainder of the removal procedure to complete installation.
  6.  

 
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