GM Full-Size Trucks 1988-1998 Repair Information

Drive Axle Shaft, Hub and Bearing

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REMOVAL & INSTALLATION



See Figures 1 through 10



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Fig. Fig. 1: Remove the hub nut and washer

  1. Raise and support the front end on jackstands.
  2.  
  3. Remove the wheel.
  4.  
  5. Remove the skid plate.
  6.  
  7. Remove the hub nut and washer. Insert a long drift or dowel through the vanes in the brake rotor to hold the rotor in place. Be careful!
  8.  



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Fig. Fig. 2: Using a puller, force the outer end of the axle shaft out of the hub



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Fig. Fig. 3: Matchmark the flange



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Fig. Fig. 4: Remove the inboard flange bolts



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Fig. Fig. 5: Remove the drive axle from the vehicle



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Fig. Fig. 6: Exploded view of the front axle-K-Series



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Fig. Fig. 7: Left side driveshaft-K-Series



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Fig. Fig. 8: Installing the shaft seal



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Fig. Fig. 9: Installing the differential carrier



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Fig. Fig. 10: Installing the thrust washer

  1. Loosen, but do not remove (yet!) the axle shaft inner flange bolts.
  2.  
  3. Remove the brake pipe and wire support brackets from the upper control arm.
  4.  
  5. If equipped, unplug the wheel speed sensor electrical connection.
  6.  
  7. Disconnect the tie rod end from the steering knuckle. Push the linkage to the other side of the truck and secure it out of the way.
  8.  
  9. Disconnect the lower shock absorber mounting bolt and swivel it out of the way.
  10.  
  11. Remove the stabilizer bar clamp. Remove the stabilizer bar bolt, spacer and bushings at the lower control arm.
  12.  
  13. Position a floor jack under the spring seat and lower control arm, this will relieve spring tension on the upper arm. Do not remove the floor jack until the drive axle is reinstalled.
  14.  
  15. Remove the cotter pin on the upper ball joint and loosen the stud nut. Loosen the stud from the control arm and then remove the stud nut completely. Press the ball stud out of the knuckle.
  16.  
  17. Using a puller, force the outer end of the axle shaft out of the hub. Remove the inboard flange bolts and the remove the drive axle.
  18.  


WARNING
Never allow the vehicle to rest on the wheels with the axle shaft removed!

To install:
  1. Position the shaft in the hub and install the washer and hub nut finger tight. Install the inner flange bolts finger tight.
  2.  
  3. Connect the upper ball joint to the knuckle and tighten the stud nut to 75 ft. lbs. (100 Nm). Install a new cotter pin.
  4.  
  5. Install the stabilizer bar bolt, spacer and bushings at the lower control arm. Tighten the bolt to 24 ft. lbs. (33 Nm).
  6.  
  7. Install the stabilizer bar clamp. Tighten the bolts to 12 ft. lbs. (16 Nm).
  8.  
  9. Install the lower shock mounting bolt and tighten it to 54 ft. lbs. (73 Nm).
  10.  
  11. Connect the tie rod end at the steering knuckle. Tighten the nut to 35 ft. lbs. (47 Nm).
  12.  
  13. Install the brake support pipe and tighten the nut to 13 ft. lbs. (17 Nm).
  14.  
  15. Insert a drift into the brake rotor and tighten the inner flange bolts to 59 ft. lbs. (80 Nm). Tighten the outer hub nut to 173 ft. lbs. (235 Nm) on 1988-91 models, 180 ft. lbs. (245 Nm) on 1992-95 models and 165 ft. lbs. (225 Nm) on 1996-98 models. Remove the drift.
  16.  
  17. Install the skid plate. Install the wheels and lower the truck.
  18.  

 
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