GM Astro/Safari 1985-1996 Repair Guide

Axle Housing

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REMOVAL & INSTALLATION



See Figures 1 and 2



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Fig. Fig. 1: Exploded view of the rear axle mounting-early-model vehicles



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Fig. Fig. 2: Exploded view of the rear axle mounting-late-model vehicles

  1. Raise and support the rear of the vehicle safely using jackstands.
  2.  

When supporting the rear of the vehicle, be sure to place the jackstands under the frame.

  1. Position a floor jack under and support the rear axle housing.
  2.  
  3. Remove the rear tire and wheel assemblies, then remove the brake drums.
  4.  
  5. Remove the shock absorber-to-axle housing nuts and bolts, then swing the shock absorbers away from the axle housing.
  6.  
  7. Matchmark and remove the driveshaft from the rear axle. The driveshaft may either be removed completely from the vehicle or supported on a wire.
  8.  
  9. Disconnect the brake lines from the axle housing clips and the wheel cylinders.
  10.  

When disconnecting the brake lines from the wheel cylinders, IMMEDIATELY plug all openings to minimize fluid loss and prevent system contamination. YOU MUST keep dirt from entering the lines.

  1. Disconnect the parking brake cable.
  2.  
  3. Disconnect the axle housing-to-spring U-bolt nuts, the U-bolts and the anchor plates. Refer to the Leaf Spring procedures in Suspension & Steering for details and safety.
  4.  
  5. Remove the vent hose from the top of the axle housing.
  6.  
  7. Using the floor jack, carefully lower the axle housing and remove it from the vehicle.
  8.  

To install:
  1. Using the floor jack, raise the axle housing into position under the vehicle.
  2.  
  3. Install the vent hose to the top of the axle housing.
  4.  
  5. Connect the axle housing-to-spring U-bolt nuts, the U-bolts and the anchor plates. Tighten the bolts to specification (for more details, please refer to the spring installation procedures in Suspension & Steering of this information).
  6.  
  7. Connect the brake lines to the axle housing clips and the wheel cylinders.
  8.  
  9. Connect the brake cables, then install the brake drums and bleed the hydraulic brake system. For details, refer to Brakes of this information.
  10.  
  11. Align the matchmarks and install the driveshaft.
  12.  
  13. Install the shock absorber-to-axle housing nuts and bolts. Torque the shock absorber-to-axle housing nuts/bolts to 75 ft. lbs. (102 Nm).
  14.  
  15. Install the rear tire and wheel assemblies.
  16.  
  17. Check and fill the axle housing, as necessary. For details, please refer to General Information & Maintenance of this information. Remember that in order to check fluid level or properly refill the housing, the vehicle MUST be level (supported at 4 points).
  18.  
  19. Remove the jackstands and carefully lower the vehicle.
  20.  

 
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