Ford Ranger/Explorer/Mountaineer 1991-1999

Front Wheel Bearings

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REMOVAL & INSTALLATION



See Figures 1 through 8

  1. Raise and support the vehicle safely. Remove the tire and wheel assembly from the hub and rotor.
  2.  
  3. Remove the caliper from its mounting and position it to the side with mechanics wire in order to prevent damage to the brake line hose.
  4.  
  5. Remove the grease cap from the hub. Remove the cotter pin, retainer, adjusting nut and flatwasher from the spindle.
  6.  
  7. Remove the outer bearing cone and roller assembly from the hub. Remove the hub and rotor from the spindle.
  8.  



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Fig. Fig. 1: Remove the nut and washer from the spindle ...



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Fig. Fig. 2: ... then remove the outer bearing



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Fig. Fig. 3: Pull the hub and rotor assembly from the spindle

  1. Using seal removal tool 1175-AC or equivalent remove and discard the grease seal. Remove the inner bearing cone and roller assembly from the hub.
  2.  
  3. Clean the inner and outer bearing assemblies in solvent. Inspect the bearings and the cones for wear and damage. Replace defective parts, as required.
  4.  



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Fig. Fig. 4: Use a small prytool to remove the old seal



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Fig. Fig. 5: With the seal removed, the inner bearing may be withdrawn from the hub

  1. If the cups are worn or damaged, remove them with front hub remover tool T81P-1104-C and tool T77F-1102-A or equivalent.
  2.  
  3. Wipe the old grease from the spindle. Check the spindle for excessive wear or damage. Replace defective parts, as required.
  4.  

To install:
  1. If the inner and outer cups were removed, use bearing driver handle tool T80-4000-W or equivalent and replace the cups. Be sure to seat the cups properly in the hub.
  2.  
  3. Use a bearing packer tool and properly repack the wheel bearings with the proper grade and type grease. If a bearing packer is not available work as much of the grease as possible between the rollers and cages. Also, grease the cone surfaces.
  4.  



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Fig. Fig. 6: Thoroughly pack the bearing with fresh, high temperature wheel bearing grease

  1. Position the inner bearing cone and roller assembly in the inner cup. A light film of grease should be included between the lips of the new grease retainer (seal).
  2.  
  3. Install the retainer using the proper installer tool. Be sure that the retainer is properly seated.
  4.  



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Fig. Fig. 7: Apply a thin coat of fresh grease to the new seal lip



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Fig. Fig. 8: Use a suitably sized driver to install the inner bearing seal to the hub

  1. Install the hub and rotor assembly onto the spindle. Keep the hub centered on the spindle to prevent damage to the spindle and the retainer.
  2.  
  3. Install the outer bearing cone and roller assembly and flatwasher on the spindle. Install the adjusting nut. Adjust the wheel bearings.
  4.  
  5. Install the retainer, a new cotter pin and the grease cap. Install the caliper.
  6.  
  7. Lower the vehicle and tighten the lug nuts to 100 ft. lbs. Before driving the vehicle pump the brake pedal several times to restore normal brake pedal travel.
  8.  


CAUTION
Retighten the wheel lug nuts to specification after about 500 miles of driving. Failure to do this could result in the wheel coming off while the vehicle is in motion possibly causing loss of vehicle control or collision.

ADJUSTMENT



See Figure 9



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Fig. Fig. 9: 2WD wheel bearing adjustment

  1. Raise and support the vehicle safely. Remove the wheel cover. Remove the grease cap from the hub.
  2.  
  3. Wipe the excess grease from the end of the spindle. Remove the cotter pin and retainer. Discard the cotter pin.
  4.  
  5. Loosen the adjusting nut 3 turns.
  6.  


WARNING
Obtain running clearance between the disc brake rotor surface and shoe linings by rocking the entire wheel assembly in and out several times in order to push the caliper and brake pads away from the rotor. An alternate method to obtain proper running clearance is to tap lightly on the caliper housing. Be sure not to tap on any other area that may damage the disc brake rotor or the brake lining surfaces. Do not pry on the phenolic caliper piston. The running clearance must be maintained throughout the adjustment procedure. If proper clearance cannot be maintained, the caliper must be removed from its mounting.

  1. While rotating the wheel assembly, tighten the adjusting nut to 17-25 ft. lbs. in order to seat the bearings. Loosen the adjusting nut a half turn. Retighten the adjusting nut 18-20 inch lbs.
  2.  
  3. Place the retainer on the adjusting nut. The castellations on the retainer must be in alignment with the cotter pin holes in the spindle. Once this is accomplished install a new cotter pin and bend the ends to insure its being locked in place.
  4.  
  5. Check for proper wheel rotation. If correct, install the grease cap and wheel cover. If rotation is noisy or rough recheck your work and correct as required.
  6.  
  7. Lower the vehicle and tighten the lug nuts to 100 ft. lbs., if the wheel was removed. Before driving the vehicle pump the brake pedal several times to restore normal brake pedal travel.
  8.  


CAUTION
If the wheel was removed, retighten the wheel lug nuts to specification after about 500 miles of driving. Failure to do this could result in the wheel coming off while the vehicle is in motion possibly causing loss of vehicle control or collision.

 
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