Canyon, Colorado 2004-2005

Pinion Seal

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Removal & Installation



  1. Raise the vehicle.
  2.  
  3. Remove the rear brake drums.
  4.  
  5. Remove the propeller shaft.
  6.  
  7. Measure the amount of torque required to rotate the pinion. Use an inch-pound torque wrench. Record this measurement for reassembly.
  8.  
  9. Place an alignment mark between the pinion and the pinion yoke.
  10.  
  11. Install the flange and holding tool J-8614-01, and remove the pinion nut while holding the tool.
  12.  
  13. Remove the washer.
  14.  
  15. Install the J 8614-3 (2) and the J 8614-2 (3) into the as shown.
  16.  
  17. Remove the pinion yoke by turning the J 8614-3 (3) clockwise while holding the J-8614-01 (1). Use a container in order to retrieve the lubricant.
  18.  
  19. Remove the pinion oil seal. Use a suitable seal removal tool. Do not damage the housing.

    Click image to see an enlarged view

    Fig. Removing the pinion nut using a pinion holding fixture tool

  20.  

To install:

  1. Using an oil seal installer, install the pinion seal.
  2.  
  3. Apply sealant to the splines of the pinion yoke.
  4.  
  5. Align the reference marks.
  6.  
  7. Install the pinion yoke.
    NOTE
    Do not hammer the pinion flange/yoke onto the pinion shaft. Pinion components may be damaged if the pinion flange/yoke is hammered onto the pinion shaft.

  8.  
  9. Using a soft-faced hammer, tap the pinion yoke until the threads on the pinion shaft can be seen.
  10.  
  11. Install the washer and a new pinion nut.
  12.  
  13. Install the J-8614-01 onto the pinion yoke as shown.
    NOTE
    If the rotating torque is exceeded, the pinion will have to be removed and a new collapsible spacer installed.

  14.  
  15. Tighten the pinion nut while holding the tool.
  16.  
  17. Tighten the nut until the pinion end play is just taken up. Rotate the pinion while tightening the nut to seat the bearings.
  18.  
  19. Measure the rotating torque of the pinion. Compare this measurement with the rotating torque recorded during removal.
  20.  
  21. Tighten the nut in small increments, as needed, until the rotating torque is 3-5 inch lbs. (0.40-0.57 Nm) greater than the rotating torque recorded during removal.
  22.  
  23. Once the specified torque is obtained, rotate the pinion several times to ensure the bearings have seated. Recheck the rotating torque and adjust if necessary.
  24.  
  25. Install the propeller shaft.
  26.  
  27. Install the brake drums.
  28.  
  29. Inspect and add axle lubricant to the axle housing, if necessary.
  30.  
  31. Lower the vehicle
  32.  

  1. Raise the vehicle.
  2.  
  3. Remove the rear brake drums.
  4.  
  5. Remove the propeller shaft.
  6.  
  7. Measure the amount of torque required to rotate the pinion. Use an inch-pound torque wrench. Record this measurement for reassembly.
  8.  
  9. Place an alignment mark between the pinion and the pinion yoke.
  10.  
  11. Install the flange and holding tool J-8614-01, and remove the pinion nut while holding the tool.
  12.  
  13. Remove the washer.
  14.  
  15. Install the J 8614-3 (2) and the J 8614-2 (3) into the as shown.
  16.  
  17. Remove the pinion yoke by turning the J 8614-3 (3) clockwise while holding the J-8614-01 (1). Use a container in order to retrieve the lubricant.
  18.  
  19. Remove the pinion oil seal. Use a suitable seal removal tool. Do not damage the housing.

    Click image to see an enlarged view

    Fig. Removing the pinion nut using a pinion holding fixture tool

  20.  

To install:

  1. Using an oil seal installer, install the pinion seal.
  2.  
  3. Apply sealant to the splines of the pinion yoke.
  4.  
  5. Align the reference marks.
  6.  
  7. Install the pinion yoke.
    NOTE
    Do not hammer the pinion flange/yoke onto the pinion shaft. Pinion components may be damaged if the pinion flange/yoke is hammered onto the pinion shaft.

  8.  
  9. Using a soft-faced hammer, tap the pinion yoke until the threads on the pinion shaft can be seen.
  10.  
  11. Install the washer and a new pinion nut.
  12.  
  13. Install the J-8614-01 onto the pinion yoke as shown.
    NOTE
    If the rotating torque is exceeded, the pinion will have to be removed and a new collapsible spacer installed.

  14.  
  15. Tighten the pinion nut while holding the tool.
  16.  
  17. Tighten the nut until the pinion end play is just taken up. Rotate the pinion while tightening the nut to seat the bearings.
  18.  
  19. Measure the rotating torque of the pinion. Compare this measurement with the rotating torque recorded during removal.
  20.  
  21. Tighten the nut in small increments, as needed, until the rotating torque is 3-5 inch lbs. (0.40-0.57 Nm) greater than the rotating torque recorded during removal.
  22.  
  23. Once the specified torque is obtained, rotate the pinion several times to ensure the bearings have seated. Recheck the rotating torque and adjust if necessary.
  24.  
  25. Install the propeller shaft.
  26.  
  27. Install the brake drums.
  28.  
  29. Inspect and add axle lubricant to the axle housing, if necessary.
  30.  
  31. Lower the vehicle
  32.  

 
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