Nissan Pick-ups and Pathfinder 1970-1988

Axle Shaft, Bearing and Seal

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REMOVAL & INSTALLATION



Single Rear Wheels

See Figures 1, 2, 3, 4, 5, 6, 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.
  6.  
  7. Remove the brake drum.
  8.  
  9. Remove the nuts securing the wheel bearing retainer to the brake backing plate.
  10.  
  11. Pull out the axle shaft assembly together with the brake backing plate using a slide hammer.
  12.  
  13. Remove the oil seal in the axle housing if necessary. It can be pried out with a screwdriver. Oil the lips of the new seal and install it carefully to avoid damage to the lip.
  14.  

To install:
  1. To replace the bearing, unbend and discard the lockwasher. Remove the locknut with a soft drift and a hammer.
  2.  
  3. Press the old bearing and cage off the shaft.
  4.  
  5. Remove the oil seal in the cage. Use a brass drift to remove the bearing cup after the seal has been removed.
  6.  
  7. Install the 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.
  8.  
  9. 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.
  10.  
  11. 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.
  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 0.012-0.035 in. (0.3-0.9mm) on 1970-74 models; 0.0008-0.0059 in. (0.02-0.15mm) on 1975-88 models. The end-play is adjusted by adding or removing shims behind the brake backing plate. Tighten the backing plate attaching nuts to 27-35 ft. lbs. (37-47 Nm) on 1970-73 models, or 39-46 ft. lbs. (53-63 Nm) on 1974-88 models.
  16.  



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Fig. Fig. 1: Disconnecting the brake backing plate from the axle housing



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Fig. Fig. 2: Remove the axle shaft with a slide hammer



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Fig. Fig. 3: Unbend the lockwasher to remove the bearing locknut-use a new one for installation



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Fig. Fig. 4: Axle shaft end-play is adjusted by the addition or subtraction of shims behind the brake backing plate



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Fig. Fig. 5: Measure the axial end-play with a dial indicator



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Fig. Fig. 6: Removing the nuts securing the axleshaft to the axle housing



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Fig. Fig. 7: Removing the backing plate from the axle housing



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Fig. Fig. 8: Removing the axleshaft assembly

Dual Rear Wheels

See Figures 9 and 10

  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.
  6.  
  7. Remove the brake drum.
  8.  
  9. Remove the nuts securing the wheel bearing retainer to the brake backing plate.
  10.  
  11. Pull out the axle shaft assembly together with the brake backing plate using a slide hammer.
  12.  
  13. Remove the attaching screws and detach the lockwasher from the rear wheel bearing nut.
  14.  
  15. Remove the rear wheel bearing nut.
  16.  
  17. Remove the bearing and seal, then drive out the races with a brass drift.
  18.  

To install:
  1. Coat the axles shaft splines with 90W gear oil and coat the seal lip with chassis lube.
  2.  
  3. Install new bearing races with an installing drift and pack the hub with chassis lube.
  4.  
  5. Pack each bearing and the O-ring with chassis lube.
  6.  
  7. Install the bearings and axle shaft. Be careful not to damage the seal with the shaft. Always use new seals. Make sure that the axle shaft end-play is 0.003 in. (0.08mm). Observe the following torques:

    Wheel bearing locknut: 123-145 ft. lbs (167-196 Nm).
     
    Backing plate nut: 62-80 ft. lbs. (84-108 Nm).
     
    Wheel lugs: 159-188 ft. lbs. (216-255 Nm).
     

  8.  



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Fig. Fig. 9: Removing the lockwasher attaching screws from a rear axle assembly with dual rear wheels



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Fig. Fig. 10: Removing the bearing locknut from a rear axle assembly with dual rear wheels

 
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