Isuzu Cars and Trucks 1981-1991

Front Hub and Wheel Bearing

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CAUTION
Some brake pads contain asbestos, which has been determined to be a cancer causing agent. Never clean the brake surfaces with compressed air! Avoid inhaling any dust from any brake surface! When cleaning brake surfaces, use a commercially available brake cleaning fluid.

REMOVAL AND INSTALLATION
Front Wheel Drive Cars

DO NOT remove the hub from the steering knuckle unless it is absolutely necessary!

  1. Raise and support the front of the vehicle safely and block the rear wheels. Loosen the wheel nuts. Remove the cotter pin, hub nut and thrust washer. Make sure the driveshaft splines are loose inside the hub. Damage to the driveshaft may result if the shaft is pulled out while remove the hub assembly.
  2.  
  3. Remove the caliper and support it on a wire.
  4.  
  5. Remove the rotor. With hub remover J-34866 and slide hammer J-261901 or equivalents, remove the hub assembly.
  6.  
  7. Remove the tie rod nut. Using a ball joint removal tool, separate the tie rod from the steering knuckle.
  8.  
  9. Remove the two ball joint-to-control arm/tension rod retaining nuts and bolts.
  10.  
  11. Remove the strut-to-steering knuckle retaining nuts/bolts.
  12.  
  13. Remove the steering knuckle, bearing and oil seal. When removing the axle shaft from the steering knuckle, be careful not to drop it and support it with a wire.
  14.  


NOTE
A arbor press or equivalent is used to separate the hub and bearing from the steering knuckle.

  1. To remove the bearing from the steering knuckle, use the following procedure:
  2.  
    1. Using a suitable seal puller, remove the oil seals from both sides of the hub assembly.
    2.  
    3. Using suitable snapring pliers, remove the snaprings from both sides of the hub assembly.
    4.  
    5. Using a suitable arbor press and the proper bearing removal tools, press the inside inner race, bearing and outside inner bearing race out of the hub assembly.
    6.  
    7. Using a press, install the bearings, seals and hub into the knuckle assembly.
    8.  




Click image to see an enlarged view

Fig. Front hub and bearings FWD vehicles



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Fig. Removing the hub assembly



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Fig. Removing wheel bearings

To install:

  1. Install the steering knuckle assembly. When installing the driveshaft to the steering knuckle, be careful not to damage the driveshaft boots.
  2.  
  3. Install the strut-to-steering knuckle retaining nuts/bolts.
  4.  
  5. Install the two ball joint-to-control arm/tension rod retaining nuts and bolts.
  6.  
  7. Install the tie rod, nut and cotter pin.
  8.  
  9. Install the rotor.
  10.  
  11. Install the caliper as outlined in the Brakes section.
  12.  
  13. Install the front wheel and lower the vehicle. Torque the following:
  14.  
    1. Tension rod to control arm bolts: 80 ft. lbs.
    2.  
    3. Strut to steering knuckle: 87 ft. lbs.
    4.  
    5. Tie rod castle nut: 29 ft. lbs.
    6.  
    7. Wheel bearing nut: 137 ft. lbs.
    8.  


4-Wheel Drive Trucks
  1. Raise and safely support the vehicle. Remove the wheel assembly.
  2.  
  3. Remove the brake caliper and support it on a wire. Remove the rotor and dust shield.
  4.  
  5. Remove the axle shaft from the hub.
  6.  
  7. Remove the tie rod end-to-steering knuckle nut and separate the tie rod from the steering knuckle.
  8.  
  9. Support the lower control arm and separate the steering knuckle from the lower ball joint.
  10.  
  11. Separate the steering knuckle from the upper ball joint.
  12.  
  13. Remove the steering knuckle from the vehicle.
  14.  
  15. Remove the outer bearing race with a hammer and a brass drift.
  16.  



Click image to see an enlarged view

Fig. Exploded view of the manual locking hub assembly 4WD



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Fig. Exploded view of the automatic locking hub assembly 4WD



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Fig. Removing the spindle nut



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Fig. Removing the outer bearing races

To install:

  1. Install the outer bearing races using a suitable race installer and a press. If a bearing race installer is not available. Grind about 0.25 and 190.50mm off of the outer portion of the old race and use that to drive the new race into position. Be careful not to damage the new race. Bearing damage will result.
  2.  
  3. Torque the ball joint nuts to 75 ft. lbs.
  4.  
  5. Install the steering knuckle to the vehicle.
  6.  
  7. Install the steering knuckle to the upper ball joint. Install the nut and new cotter pin.
  8.  
  9. Install the tie rod end-to-steering knuckle nut.
  10.  
  11. If equipped with 4WD, install the axle shaft to the hub.
  12.  
  13. Install the dust cover, rotor and brake caliper as outlined in the Brakes section. </