Mitsubishi Montero, Sport 1998-06

Wheel Bearings

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Adjustment



The bearings are integral with the hub. No adjustment is possible.

  1. With the caliper removed, check the rotational starting torque. Rotational torque should be 2.7-11.5 inch lbs. (0.3-1.3 Nm). Rotational torque can be adjusted by tightening or loosening the adjusting nut.
  2.  
  3. Check the hub axial. Endplay should not exceed 0.002 inch (0.05mm). If adjusting nut tightening does not bring the axial play within specifications, the bearings must be replaced.
  4.  
  5. Check hub endplay. Endplay should be 0.02-0.03 inch (0.4-0.7mm). Shims are available to adjust endplay.
  6.  
  7. Install the hub assembly. Tighten the nut to 94-145 ft. lbs. (127-196 Nm). Loosen it completely. Tighten the nut to 18 ft. lbs. (25Nm), then back it off 30 degrees.
  8.  

  1. Tighten the wheel bearing nut to 119 ft. lbs. (162 Nm) while turning the rotor.
  2.  
  3. Loosen the wheel bearing adjusting nut completely.
  4.  
  5. Tighten the nut to 18 ft. lbs. (25 Nm), then loosen the nut approximately 30°.
  6.  
  7. Using a dial indicator, check the wheel bearing end-play. The specification is 0.002 in. (0.05mm).
  8.  
  9. Install the locknut.
  10.  

The bearings are integral with the hub. No adjustment is possible.

  1. With the caliper removed, check the rotational starting torque. Rotational torque should be 2.7-11.5 inch lbs. (4-19Nm). Rotational torque can be adjusted by tightening or loosening the adjusting nut.
  2.  
  3. Check the hub axial. Endplay should not exceed 0.002 inch (0.05mm). If adjusting nut tightening does not bring the axial play within specifications, the bearings must be replaced.
  4.  
  5. Check hub endplay. Endplay should be 0.02-0.03 inch (0.4-0.7mm). Shims are available to adjust endplay.
  6.  
  7. Install the hub assembly. Tighten the nut to 94-145 ft. lbs. (127-196Nm). Loosen it completely. Tighten the nut to 18 ft. lbs. (25Nm), then back it off 30 degrees.
  8.  

Removal & Installation



The wheel bearings are not replaceable. If defective, the hub/bearing assembly must be replaced.

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

    Tire and wheel assembly
     
    Hub cover
     
    Nut
     
    Washer
     
    Brake hose
     
    Speed sensor
     
    Caliper
     
    Rotor
     
    Dust cover
     
    Tie rod end
     
    Upper and lower arms from the knuckle
     
    Rotor shield
     
    Hub/knuckle assembly
     

  4.  
  5. Mount the assembly in a vise. Install tool MB990998, or equivalent on the hub. Tighten the nut to 188 ft. lbs. (255 Nm). Check the rotation starting torque. Torque should be 15.48 inch lbs. (1.75 Nm). Wheel bearing backlash should be 0.
  6.  
  7. If the hub is to be replaced, remove the hub-to-knuckle bolts.
  8.  
  9. Installation is the reverse of removal. Observe the following torques:

    Hub-to-knuckle bolts: 65 ft. lbs. (88 Nm)
     
    Hub nut: 188 ft. lbs. (255 Nm)
     

  10.  

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

    Wheel
     
    Caliper
     
    Hub cover
     
    Snapring
     
    Shim
     
    Drive flange
     
    Spring washer
     
    Nut
     
    Hub and outer bearing
     
    Oil seal
     
    Inner bearing
     
    Races
     

  4.  
  5. Installation is the reverse of removal.
  6.  
  7. Install the hub assembly. Tighten the nut to 94-145 ft. lbs. (127-196 Nm). Loosen it completely. Tighten the nut to 18 ft. lbs. (25 Nm), then back it off 30 degrees.
  8.  



Click image to see an enlarged view

Fig. Front axle hub and related components-Montero Sport

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Raise and support the vehicle safely. Remove the tire and wheel assembly.
  4.  
  5. Remove the brake caliper assembly and position it to the side, with wire.
  6.  
  7. Remove the dust cap, snapring and shim. Remove the drive flange.
  8.  
  9. Remove the spring washer. Remove the jamnut, using tool MB990954, or equivalent.
  10.  
  11. Remove the front hub assembly from the vehicle.
  12.  

To install:

  1. Install the front hub assembly.
  2.  
  3. On 4WD vehicles, use a spring scale to measure the hub rotary sliding resistance. Specification should be 2.7-11.5 inch lbs. If not within specification remove the lock washer. If the resistance is lower than specification, use tool MB9909954 to tighten the jamnut. If the resistance is higher than specification, use MB9909954 to tighten the jamnut. Install a dial indicator gauge and move the hub in the axial direction. Measure the wheel bearing movement. Specification should be 0.002 inch or less. If not within specification, remove the spring washer and use special tool MB990954 to tighten the jamnut. If adjustment is not possible, disassemble the hub and inspect each component.
  4.  
  5. Install the lock washer.
    NOTE
    If the hole position is not aligned with the jam nut, move it within a range of not more than a 20 degree angle, until the holes are aligned.

  6.  
  7. Install the drive flange, shim and snapring.
  8.  
  9. On 4WD vehicles, push the halfshaft in by hand towards the knuckle until they touch. Measure the clearance between the drive flange and the spacer. Specification should be 0.02-0.03 inch. If not within specification select and adjusting shim that will bring the halfshaft end play within to specification.
  10.  
  11. Continue the installation in the reverse order of the removal procedure.
  12.  

The wheel bearings are not replaceable. If defective, the hub/bearing assembly must be replaced.

Click image to see an enlarged view

Fig. Front hub and bearing assembly-Montero

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

    Tire and wheel assembly
     
    Hub cover
     
    Nut
     
    Washer
     
    Brake hose
     
    Speed sensor
     
    Caliper
     
    Rotor
     
    Dust cover
     
    Tie rod end
     
    Upper and lower arms from the knuckle
     
    Rotor shield
     
    Hub/knuckle assembly
     

  4.  
  5. Mount the assembly in a vise. Install tool MB990998, or equivalent on the hub. On 2002-2003 vehicles tighten the nut to 167-209 ft. lbs. (226-284 Nm) and on 2004-2006 vehicles tighten the nut to 141-155 ft. lbs. (190-210 Nm). Check the rotation starting torque. Torque should be 15.48 inch lbs. (1.75 Nm). Wheel bearing backlash should be 0.
  6.  
  7. If the hub is to be replaced, remove the hub-to-knuckle bolts.
  8.  
  9. Installation is the reverse of removal. Observe the following torques:

    Hub-to-knuckle bolts: 65 ft. lbs. (88 Nm)
     

  10.  
  11. On 2002-2003 vehicles tighten the hub nut to 167-209 ft. lbs. (226-284 Nm) and on 2004-2006 vehicles tighten the hub nut to 141-155 ft. lbs. (190-210 Nm).
  12.  



Click image to see an enlarged view

Fig. Front hub and bearing assembly-Montero Sport

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

    Wheel
     
    Caliper
     
    Hub cover
     
    Snapring
     
    Shim
     
    Drive flange
     
    Spring washer
     
    Nut
     
    Hub and outer bearing
     
    Oil seal
     
    Inner bearing
     
    Races
     

  4.  
  5. Installation is the reverse of removal.

    Click image to see an enlarged view

    Fig. The bearing races can be removed from the hub using a drift and hammer-Montero Sport



    Click image to see an enlarged view

    Fig. Install the new races into the hub using the proper size driver-Montero Sport

  6.  
  7. Install the hub assembly. Tighten the nut to 94-145 ft. lbs. (127-196 Nm). Loosen it completely. Tighten the nut to 18 ft. lbs. (25 Nm), then back it off 30 degrees.
  8.  

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

    Tire and wheel assembly
     
    Caliper assembly and suspend it from the upper arm
     
    Dust cap
     
    Cotter pin, castellated nut lock, wheel bearing nut and washer from the spindle
     
    Outer wheel bearing
     
    Hub and rotor as an assembly
     
    Grease seal and inner wheel bearing
     

  4.  
  5. If required, press the inner and outer bearing outer races from the hub assembly.
  6.  
  7. If replacement of the hub is necessary, matchmark the brake disc with the hub, then separate the hub from the disc.
  8.  

To install:

  1. If removed, place the brake rotor on the hub, while aligning the matchmarks. Tighten the mounting bolts to 34-38 ft. lbs. (47-52 Nm).
  2.  
  3. If removed, press-fit the inner and outer bearing outer races into the hub assembly.
  4.  
  5. Lubricate the seal lip and inside surface of the front hub with MP grease.
  6.  
  7. Install or connect the following:

    Inner wheel bearing and repack
     
    New grease seal
     
    Hub assembly on the spindle
     
    Outer wheel bearing, washer and nut, lubricate. When the bearing preload is properly set, install the nut lock and a new cotter pin.
     
    Grease cap
     
    Caliper assembly
     
    Tire and wheel assembly
     

  8.  


    Click image to see an enlarged view

    Fig. The bearing races can be removed from the hub using a drift and hammer



    Click image to see an enlarged view

    Fig. Install the new races into the hub using the proper size driver



    Click image to see an enlarged view

    Fig. Exploded view of the hub and wheel bearing assembly-Montero


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

    Tire and wheel assembly
     
    Caliper assembly and suspend it from the upper arm
     
    Dust cap
     
    Cotter pin, castellated nut lock, wheel bearing nut and washer from the spindle
     
    Outer wheel bearing
     
    Hub and rotor as an assembly
     
    Grease seal and inner wheel bearing
     

  4.  
  5. If required, press the inner and outer bearing outer races from the hub assembly.
  6.  
  7. If replacement of the hub is necessary, matchmark the brake disc with the hub, then separate the hub from the disc.
  8.  

To install:

  1. If removed, place the brake rotor on the hub, while aligning the matchmarks. Tighten the mounting bolts to 34-38 ft. lbs. (47-52 Nm).
  2.  
  3. If removed, press-fit the inner and outer bearing outer races into the hub assembly.
  4.  
  5. Lubricate the seal lip and inside surface of the front hub with MP grease.
  6.  
  7. Install or connect the following:

    Inner wheel bearing and repack
     
    New grease seal
     
    Hub assembly on the spindle
     
    Outer wheel bearing, washer and nut, lubricate. When the bearing preload is properly set, install the nut lock and a new cotter pin.
     
    Grease cap
     
    Caliper assembly
     
    Tire and wheel assembly

    Click image to see an enlarged view

    Fig. The bearing races can be removed from the hub using a drift and hammer



    Click image to see an enlarged view

    Fig. Install the new races into the hub using the proper size driver



    Click image to see an enlarged view

    Fig. Exploded view of the hub and wheel bearing assembly-Montero

     

  8.  

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

    Tire and wheel assembly
     
    Caliper assembly and suspend it from the upper arm
     
    Dust cap
     
    Cotter pin, castellated nut lock, wheel bearing nut and washer from the spindle
     
    Outer wheel bearing
     
    Hub and rotor as an assembly
     
    Grease seal and inner wheel bearing
     

  4.  
  5. If required, press the inner and outer bearing outer races from the hub assembly.
  6.  
  7. If replacement of the hub is necessary, matchmark the brake disc with the hub, then separate the hub from the disc.
  8.  

To install:

  1. If removed, place the brake rotor on the hub, while aligning the matchmarks. Tighten the mounting bolts to 34-38 ft. lbs. (47-52 Nm).
  2.  
  3. If removed, press-fit the inner and outer bearing outer races into the hub assembly.
  4.  
  5. Lubricate the seal lip and inside surface of the front hub with MP grease.
  6.  
  7. Install or connect the following:

    Inner wheel bearing and repack
     
    New grease seal
     
    Hub assembly on the spindle
     
    Outer wheel bearing, washer and nut, lubricate. When the bearing preload is properly set, install the nut lock and a new cotter pin.
     
    Grease cap
     
    Caliper assembly
     
    Tire and wheel assembly

    Click image to see an enlarged view

    Fig. The bearing races can be removed from the hub using a drift and hammer



    Click image to see an enlarged view

    Fig. Install the new races into the hub using the proper size driver



    Click image to see an enlarged view

    Fig. Exploded view of the hub and wheel bearing assembly-Montero

     

  8.  

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

    Tire and wheel assembly
     

  4.  
  5. If equipped with locking hub:
    1. Place the locking hub in the free position.
      NOTE
      A free position can be obtained by shifting the transfer shift lever to the 2H position, then moving the vehicle in reverse for approximately 3-6 ft. (1-2 m).

    2.  
    3. Remove the hub cover.
    4.  
    5. Remove the snapring from the axle shaft.
    6.  
    7. Remove the bolts and remove the automatic locking hub.
    8.  

  6.  
  7. Remove or disconnect the following:

    Caliper assembly and suspend it from the upper arm.
     
    Lockwasher and locknut
     
    Hub and rotor as an assembly from the knuckle together with the inner and outer bearings
     
    Outer bearing, grease seal and inner wheel bearing
     
    Inner and outer bearing outer races from the hub assembly, if required
     

  8.  
  9. If replacement of the hub is necessary, matchmark the brake disc with the hub, then separate the hub from the disc.
  10.  

To install:

  1. Install or connect the following:

    Brake rotor on the hub, while aligning the matchmarks, if removed
     
    Press-fit the inner and outer bearing outer races into the hub assembly
     
    Inner wheel bearing, repack with grease
     
    New grease seal
     
    Hub assembly to the spindle
     
    Outer wheel bearing and locknut, lubricate
     

  2.  
  3. When the bearing preload is properly set, install the lockwasher.
  4.  
  5. If equipped with locking hubs:
    1. Apply a coating of semi-drying sealant to the locking hub body and front hub contact surfaces.
    2.  
    3. Align the key of the brake B and the keyway of the knuckle spindle and loosely install the automatic locking hub assembly. Tighten the mounting bolts to 36-43 ft. lbs. (50-60 Nm).
    4.  

  6.  
  7. Install the wheel and tire assembly
  8.  

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

    Tire and wheel assembly
     

  4.  
  5. If equipped with locking hub:
    1. Place the locking hub in the free position.
      NOTE
      A free position can be obtained by shifting the transfer shift lever to the 2H position, then moving the vehicle in reverse for approximately 3-6 ft. (1-2 m).

    2.  
    3. Remove the hub cover.
    4.  
    5. Remove the snapring from the axle shaft.
    6.  
    7. Remove the bolts and remove the automatic locking hub.
    8.  

  6.  
  7. Remove or disconnect the following:

    Caliper assembly and suspend it from the upper arm.
     
    Lockwasher and locknut
     
    Hub and rotor as an assembly from the knuckle together with the inner and outer bearings
     
    Outer bearing, grease seal and inner wheel bearing
     
    Inner and outer bearing outer races from the hub assembly, if required
     

  8.  
  9. If replacement of the hub is necessary, matchmark the brake disc with the hub, then separate the hub from the disc.
  10.  

To install:

  1. Install or connect the following:

    Brake rotor on the hub, while aligning the matchmarks, if removed
     
    Press-fit the inner and outer bearing outer races into the hub assembly
     
    Inner wheel bearing, repack with grease
     
    New grease seal
     
    Hub assembly to the spindle
     
    Outer wheel bearing and locknut, lubricate
     

  2.  
  3. When the bearing preload is properly set, install the lockwasher.
  4.  
  5. If equipped with locking hubs:
    1. Apply a coating of semi-drying sealant to the locking hub body and front hub contact surfaces.
    2.  
    3. Align the key of the brake B and the keyway of the knuckle spindle and loosely install the automatic locking hub assembly. Tighten the mounting bolts to 36-43 ft. lbs. (50-60 Nm).
    4.  

  6.  
  7. Install the wheel and tire assembly
  8.  

 
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