Nissan Pick-ups and Pathfinder 1989-1995

Axle Shaft, Bearing and Seal

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REMOVAL & INSTALLATION



With Drum Brakes

See Figures 1 through 6

  1. Raise the rear of the vehicle and support it. Remove the rear wheel and tire.
  2.  
  3. Disconnect the rear parking brake cable by removing the adjusting nut and clamps.
  4.  



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Fig. Fig. 1: Exploded view of the rear axle assembly-drum brake type



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Fig. Fig. 2: Remove the nuts securing the wheel bearing cage with the baffle plate



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Fig. Fig. 3: After unfastening the retainers, remove the backing plate from the axle housing



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Fig. Fig. 4: View of the axle shaft removed from axle housing-note the splined end of the shaft



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Fig. Fig. 5: After removing the axle shaft remove the bearing grease seal from the axle housing



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Fig. Fig. 6: Install the bearing grease seal squarely into the axle housing using a suitable driver or the correct size socket

  1. Disconnect the brake tube at the rear brake backing plate. Plug the end of the brake tube to prevent loss of brake fluid and system contamination.
  2.  
  3. Remove the brake drum.
  4.  
  5. Remove the nuts securing the wheel bearing cage with the baffle plate.
  6.  

If only removing the axle shaft and the oil seal is good, take care to not damage the seal when pulling the axle. If the wheel bearing and/or seal must be replaced, proceed to step 7.

  1. Pull out the axle shaft assembly together with the brake backing plate using a slide hammer.
  2.  
  3. Remove the oil seal in the axle housing if necessary, and discard. It can be pried out with a small pry bar. Oil the lips of the new seal and install it carefully to avoid damage to the lip.
  4.  
  5. To replace the bearing, unbend and discard the lockwasher. Remove the locknut with a soft drift and a hammer.
  6.  
  7. Press the old bearing and cage off the shaft.
  8.  
  9. Remove the oil seal in the cage. Use a brass drift to remove the bearing cup after the seal has been removed.
  10.  

To install:
  1. Install a new cup with a brass drift. Install a new oil seal over the bearing cup. Lubricate the area between the seal lips with grease after installation.
  2.  
  3. Place the bearing cage and spacer on the axle shaft, then fit the bearing, tapping it into place with a soft drift and light hammer blows.
  4.  
  5. Place the flat bearing lockwasher over the bearing, then the new nut lockwasher. Install the locknut, tightening to 108 ft. lbs. (147 Nm). Continue to tighten after that until the grooves line up with the lockwasher tabs. The nut can be tightened up to 145 ft. lbs. (196 Nm). Bend the lockwasher tabs into place.
  6.  
  7. Lubricate the bearing and recess in the axle housing with wheel bearing grease. Coat the axle splines with gear oil. Coat the seal surface of the shaft with grease.
  8.  
  9. Install the axle shaft and then check the axle end-play. It should be 0.004-0.012 in. (0.1-0.3mm). The end-play is adjusted by adding or removing shims behind the brake backing plate. Tighten the backing plate attaching nuts to 39-46 ft. lbs. (53-63 Nm).
  10.  

With Disc Brakes

See Figures 7 and 8

  1. Raise the rear of the vehicle and support it. Remove the rear wheel and tire.
  2.  
  3. Disconnect the rear parking brake cable by removing the adjusting nut and clamps.
  4.  
  5. Disconnect the brake tube at the rear brake backing plate. Plug the end of the brake tube to prevent loss of brake fluid or system contamination.
  6.  



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Fig. Fig. 7: Exploded view of the rear axle assembly-disc brake type



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Fig. Fig. 8: Axle shaft end-play is adjusted by the addition or subtraction of shims behind the backing plate

  1. Remove the brake caliper assembly and rotor.
  2.  
  3. Remove the nuts securing the wheel bearing retainer to the brake backing plate.
  4.  
  5. If replacing the bearing and not just a faulty seal, pull out the axle shaft assembly together with the brake backing plate using a slide hammer.
  6.  
  7. Remove the oil seal in the axle housing if necessary. It can be pried out with a small pry bar.
  8.  
  9. To replace the bearing, unbend and discard the lockwasher. Remove the locknut with a spanner wrench.
  10.  
  11. Remove the wheel bearing together with the bearing housing and the backing plate from the axle shaft.
  12.  
  13. Remove the outer wheel bearing inner race from the axle shaft.
  14.  
  15. Pry out the old grease seal from the bearing housing.
  16.  
  17. Press out the wheel bearing outer race.
  18.  

To install:
  1. Using a brass drift, press the new bearing into the housing until it bottoms.
  2.  
  3. Oil the lips of the new seal and install it carefully to avoid damage to the lip. Press on the new seal until it bottoms in the housing.
  4.  
  5. Install the backing plate over the housing and press the axle shaft into the inner bearing race. Be careful not to damage the seal.
  6.  
  7. Grease the seat of the locknut and then tighten it to 181-217 ft. lbs. (245-294 Nm).
  8.  
  9. Turn the bearing housing two or three revolutions; it must rotate smoothly. Bend out part of the lock washer in order to lock the nut.
  10.  
  11. Press the new oil seal into the axle housing with a drift and mallet.
  12.  
  13. Lubricate the bearing and recess in the axle housing with wheel bearing grease. Coat the axle splines with gear oil. Coat the seal surface of the shaft with grease.
  14.  
  15. Install the axle shaft and then check the axle end-play. It should be 0.004-0.012 in. (0.1-0.3mm). The end-play is adjusted by adding or removing shims behind the brake backing plate. Tighten the backing plate attaching nuts to 39-46 ft. lbs. (53-63 Nm).
  16.  

 
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