Chrysler Full-Size Trucks 1989-1996 Repair Guide

Axle Shaft, Bearing and Seal

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CAUTION
Before servicing any axle shafts, be sure to jack and support the truck so that both rear wheels are off the ground. This will ensure that the vehicle will not roll off the supports if the vehicle is equipped with a limited slip rear axle and one wheel is turned inadvertently.

REMOVAL & INSTALLATION



Chrysler Axles

See Figures 1, 2, 3, 4 and 5

There is no provision for axle shaft end-play adjustment on these axles.



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Fig. Fig. 1: Removing the axle shaft bearing and seal from the Chrysler axle

  1. Jack up the vehicle and remove the rear wheels.
  2.  
  3. Clean all dirt from the housing cover and remove the housing cover to drain the lubricant.
  4.  
  5. Remove the brake drum.
  6.  
  7. Rotate the differential case until the differential pinion shaft lockscrew can be removed. Remove the lockscrew and pinion shaft.
  8.  
  9. Push the axle shafts toward the center of the vehicle and remove the C-locks from the grooves on the axle shafts.
  10.  
  11. Pull the axle shafts from the housing, being careful not to damage the bearing which remains in the housing.
  12.  
  13. Inspect the axle shaft bearings and replace any doubtful parts. Whenever the axle shaft is replaced, the bearings should also be replaced.
  14.  
  15. Remove the axle shaft seal from the bore in the housing using the button end of the axle shaft, or a suitable removal tool.
  16.  
  17. Remove the axle shaft bearing from the housing. On standard axles, use a slide hammer and adapter. On the 9 1 / 4 in. HD axle, use a puller such as C-4828, or its equivalent. Do not reuse the bearing or the seal.
  18.  



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Fig. Fig. 2: Use a slide hammer to remove the axle shaft bearing and seal from the Chrysler axle

  1. Check the bearing shoulder in the axle housing for imperfections. These should be corrected with a file.
  2.  
  3. Clean the axle shaft bearing cavity.
  4.  

To install:
  1. Grease and install the axle shaft bearing in the cavity. An installer tool is recommended, although a drive can be used. Be sure that the bearing is not cocked and that it is seated firmly against the shoulder.
  2.  
  3. Install the axle shaft bearing seal. It should be seated beyond the end of the flange face.
  4.  



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Fig. Fig. 3: Slide out the axle shaft from the housing



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Fig. Fig. 4: Use a suitable tool to pry out and remove the axle shaft seal

  1. Insert the axle shaft, making sure that the splines do not damage the seal. Be sure that the splines are properly engaged with the differential side gear splines.
  2.  



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Fig. Fig. 5: Install the axle shaft seal using a suitable seal driver

  1. Install the C-locks in the grooves on the axle shafts. Pull the shafts outward so that the C-locks seat in the counterbore of the differential side gears.
  2.  
  3. Install the differential pinion shaft through the case and pinions. Install the lockscrew and secure it in position.
  4.  
  5. Clean the housing and gasket surfaces. Install the cover and a new gasket. Refill the axle with the specified lubricant.
  6.  

Replacement differential cover gaskets may not be available. The use of gel type non-sticking sealant is recommended.

Model 60 and 70
  1. Remove the axle shaft flange locknuts and washers, or bolts.
  2.  
  3. On axles with locknuts, rap the axle shafts sharply in the center of the flange with a hammer to free the dowels.
  4.  
  5. Remove the tapered dowels and/or axle shafts.
  6.  

To install:
  1. Clean the gasket area with solvent and install a new flange gasket.
  2.  
  3. Install the axle shaft in to the housing.
  4.  
  5. If the axle has an outer wheel bearing seal, install new gaskets on each side of the seal mounting flange.
  6.  
  7. Install the tapered dowels, lockwashers, and nuts or Durlock® bolts. Tighten the 7 / 16 - 20 nuts to 40-70 ft. lbs. (54-95 Nm); the 1 / 2 - 20 nuts to 65-105 ft. lbs. (88-143 Nm); the Durlock® bolt to 60 ft. lbs. (82 Nm).
  8.  

 
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