Mazda Trucks 1994-1998 Repair Guide

Spindle Bearings

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REMOVAL & INSTALLATION



Navajo and 1994-97 B Series Pick-up Models
  1. Loosen the front wheel lug nuts.
  2.  
  3. Raise and support the vehicle safely. Remove the wheel and tire assembly.
  4.  
  5. Remove the disc brake calipers and support the caliper on the vehicle's frame rail.
  6.  
  7. Remove the hub locks and lock nuts.
  8.  
  9. Remove the hub and rotor.
  10.  
  11. Remove the nuts retaining the spindle to the steering knuckle. Tap the spindle with a plastic or rawhide hammer to jar the spindle from the knuckle.
  12.  
  13. Inspect the needle bearings inside the spindle bore. If worn or damaged, replace as follows:
    1. Place the spindle in a vise on the second step of the spindle. Wrap a shop towel around the spindle or use a brass-jawed vise to protect the spindle.
    2.  
    3. Remove the oil seal and needle bearing from the spindle with a slide hammer and seal remover tool, 1175-AC or equivalent.
    4.  
    5. Clean all dirt and grease from the spindle bearing bore. Bearing bore must be free from nicks and burrs.
    6.  
    7. Place the bearing in the bore with the manufacturer's identification facing outward. Drive the bearing into the bore using spindle bearing replacer tool, T83T-3123-A and drive handle T80T-4000-W or equivalent.
    8.  
    9. Install the grease seal in the bearing bore with the lip side of the seal facing towards the tool. Drive the seal in the bore using spindle bearing replacer tool, T83T-3123-A and drive handle T80T-4000-W or equivalent. Coat the bearing seal lip with Multi-Purpose Long Life Lubricant C1AZ-19590-B or equivalent.
    10.  

  14.  

To install:
  1. Inspect the seal on the axle shaft, and if damaged or worn replace it. Refer to front axle shaft REMOVAL & INSTALLATION procedure in this Section.
  2.  
  3. Install the splash shield and spindle onto the steering knuckle. Install and tighten the spindle nuts to 35-45 ft. lbs. (47-61Nm).
  4.  

Since the rotor is removed, check that the wheel bearings are properly greased and that the rotor grease seal is in acceptable condition.

  1. Install the rotor on the spindle.
  2.  
  3. Install the wheel bearing, locknut, thrust bearing, snapring and locking hubs.
  4.  
  5. Install the disc brake calipers. Install the wheel and tire assembly.
  6.  
  7. Lower the vehicle. Tighten the lug nuts to specification.
  8.  

1998 B Series Pick-up Models

The 1998 B Series Pick-up models do not use spindles. Instead they use an internally splined wheel hub which is pressed into a sealed bearing. If the assembly goes bad, it must be replaced as an entire unit. For REMOVAL & INSTALLATION procedures, refer to Suspension & Steering .

MPV Models

See Figure 1

  1. Raise and safely support the vehicle. Remove the wheel and tire assembly.
  2.  
  3. Remove and discard the locknut from the end of the halfshaft.
  4.  
  5. Remove the brake caliper and disc brake rotor. Support the caliper aside with rope or mechanics wire; do not let the caliper hang by the brake hose.
  6.  
  7. Remove the cotter pin and nut and, using a suitable tool, disconnect the tie rod end from the knuckle.
  8.  
  9. Remove the cotter pin and loosen the lower ball joint nut. Separate the lower arm from the knuckle using a suitable tool.
  10.  
  11. Remove the knuckle-to-strut bolts and nuts and remove the knuckle/hub assembly from the vehicle.
  12.  
  13. Pry out the inner oil seal from the knuckle.
  14.  
  15. Position the knuckle/hub assembly in a press and, using a suitable driver, press the hub from the knuckle.
  16.  

If the inner bearing race remains on the hub, position the hub in a vise, secured by the flange. Move the race away from the hub using a hammer and chisel, then position the hub in a press and press the race off of the hub.

  1. Pry out the outer oil seal from the knuckle.
  2.  
  3. Remove the retaining ring and position the knuckle in a press. Using a suitable driver, press the wheel bearing from the knuckle.
  4.  
  5. If necessary, mark the position of the dust shield on the knuckle and remove the dust shield, using a hammer and chisel. Do not reuse the dust cover, if removed.
  6.  



Click image to see an enlarged view

Fig. Fig. 1: Front wheel hub, knuckle and bearing assembly-4WD MPV

To install:
  1. If the dust cover was removed, mark the new cover in the same place as the old was marked during removal. Align the cover and knuckle marks and press the cover onto the knuckle.
  2.  
  3. Press a new wheel bearing into the knuckle, using a suitable driver. Install the retaining ring and a new outer seal. Apply grease to the seal lip.
  4.  
  5. Press the hub into the knuckle, using a suitable driver. Install a new inner seal and lubricate the seal lip with grease.
  6.  
  7. Install the knuckle/hub assembly onto the strut, install the bolts and nuts and tighten to 69-86 ft. lbs. (93-117 Nm).
  8.  
  9. Install the lower ball joint into the knuckle and tighten the nut to 115-137 ft. lbs. (157-187 Nm). Install a new cotter pin.
  10.  
  11. Connect the tie rod to the knuckle and install the nut. Tighten to 43-58 ft. lbs. (59-78 Nm) and install a new cotter pin.
  12.  
  13. Install the brake rotor and caliper.
  14.  
  15. Install a new locknut on the end of the halfshaft and tighten to 174-231 ft. lbs. (235-314 Nm). After tightening, stake the nut with a blunt chisel.
  16.  
  17. Install the wheel and tire assembly and lower the vehicle. Check the front end alignment.
  18.  

 
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