Avalanche, Sierra, Silverado, C&K Series, 1999-2005

Axle Shaft, Bearing & Seal 2

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Removal & Installation



Semi-Floating Non-Locking Differentials
  1. Remove the wheels and brake drums.
  2.  
  3. Remove the differential cover
  4.  
  5. Turn the differential until you can reach the differential pinion shaft lockscrew. Remove the lockscrew and the pinion shaft.
  6.  
  7. Push in on the axle end. Remove the C-lock from the inner (button) end of the shaft.
  8.  
  9. Remove the shaft, being careful of the oil seal.
  10.  
  11. You can pry the oil seal out of the housing by placing the inner end of the axle shaft behind the steel case of the seal, then prying it out carefully.
  12.  
  13. A puller or a slide hammer is required to remove the bearing from the housing.

    Click image to see an enlarged view

    Fig. Remove the differential pinion shaft lockscrew



    Click image to see an enlarged view

    Fig. Remove the pinion shaft



    Click image to see an enlarged view

    Fig. Remove the C-lock from the inner (button) end of the shaft

  14.  

To install:

  1. Pack the new or reused bearing with wheel bearing grease and lubricate the cavity between the seal lips with the same grease.
  2.  
  3. The bearing has to be driven into the housing. Don't use a drift, you might cock the bearing in its bore. Use a piece of pipe or a large socket instead. Drive only on the outer bearing race. In a similar manner, drive the seal in flush with the end of the tube.
  4.  
  5. Slide the shaft into place, turning it slowly until the splines are engaged with the differential. Be careful of the oil seal.
  6.  
  7. Install the C-lock on the inner axle end. Pull the shaft out so that the C-lock seats in the counterbore of the differential side gear.
  8.  
  9. Position the differential pinion shaft through the case and the pinion gears, aligning the lockscrew hole. Install the lockscrew.
  10.  
  11. Install the cover with a new gasket and tighten the bolts evenly in a criss-cross pattern.
  12.  
  13. Fill the axle with lubricant.
  14.  
  15. Replace the brake drums and wheels.

    Click image to see an enlarged view

    Fig. Remove the axle shaft from the vehicle



    Click image to see an enlarged view

    Fig. Use a puller to remove the oil seal



    Click image to see an enlarged view

    Fig. Install the oil seal using a seal installer

  16.  



Click image to see an enlarged view

Fig. Remove the differential pinion shaft lockscrew-1999 models



Click image to see an enlarged view

Fig. Remove the pinion shaft-1999 models



Click image to see an enlarged view

Fig. Remove the C-lock from the inner (button) end of the shaft-1999 models

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove the wheels and brake drums.
  4.  
  5. Remove the differential cover
  6.  
  7. Turn the differential until you can reach the differential pinion shaft lockscrew. Remove the lockscrew and the pinion shaft.
  8.  
  9. Push in on the axle end. Remove the C-lock from the inner (button) end of the shaft.
  10.  
  11. Remove the shaft, being careful of the oil seal.
  12.  
  13. You can pry the oil seal out of the housing by placing the inner end of the axle shaft behind the steel case of the seal, then prying it out carefully.
  14.  
  15. A puller or a slide hammer is required to remove the bearing from the housing.
  16.  

To install:

  1. Pack the new or reused bearing with wheel bearing grease and lubricate the cavity between the seal lips with the same grease.
  2.  
  3. The bearing has to be driven into the housing. Don't use a drift, you might cock the bearing in its bore. Use a piece of pipe or a large socket instead. Drive only on the outer bearing race. In a similar manner, drive the seal in flush with the end of the tube.
  4.  
  5. Slide the shaft into place, turning it slowly until the splines are engaged with the differential. Be careful of the oil seal.
  6.  
  7. Install the C-lock on the inner axle end. Pull the shaft out so that the C-lock seats in the counterbore of the differential side gear.
  8.  
  9. Position the differential pinion shaft through the case and the pinion gears, aligning the lockscrew hole. Install the lockscrew.
  10.  
  11. Install the cover with a new gasket and tighten the bolts evenly in a criss-cross pattern.
  12.  
  13. Fill the axle with lubricant.
  14.  
  15. Replace the brake drums and wheels.

    Click image to see an enlarged view

    Fig. Remove the axle shaft from the vehicle-1999 models



    Click image to see an enlarged view

    Fig. Use a puller to remove the oil seal-1999 models



    Click image to see an enlarged view

    Fig. Install the oil seal using a seal installer-1999 models

  16.  

 
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