GM Full-Size Trucks 1980-1987 Repair Guide

Leaf Spring

Print

REMOVAL & INSTALLATION



See Figures 1, 2, 3 and 4

  1. Raise the vehicle and support it so that there is no tension on the leaf spring assembly.
  2.  
  3. Loosen the spring-to-shackle retaining bolts. Do not remove these bolts.
  4.  
  5. Remove the securing bolts which attach the shackle to the spring hanger.
  6.  



Click image to see an enlarged view

Fig. Fig. 1: Exploded view of the rear suspension, C/K 10, C/K 20 Pickups, Suburban, Blazer and Jimmy



Click image to see an enlarged view

Fig. Fig. 2: Exploded view of the rear suspension, C/K 30 models



Click image to see an enlarged view

Fig. Fig. 3: View of a 1/2 ton rear suspension. Visible are the leaf springs, rear axle housing and the shock absorbers

  1. Remove the nut and bolt which attach the spring to the front hanger.
  2.  
  3. Remove the U-bolt nuts and remove the spring plate.
  4.  
  5. Pull the spring from the vehicle.
  6.  



Click image to see an enlarged view

Fig. Fig. 4: Leaf spring installation

  1. Inspect the spring and replace any damaged components.
  2.  

If the spring bushings are defective, use the following procedures for removal and installation. The3/4 ton and 1 ton trucks use bushings that are staked in place. The stakes must first be straightened. When a new bushing is installed stake it in 3 equally spaced locations. Using a press or vise, remove the bushing and install the new one.

  1. Place the spring assembly onto the axle housing
  2.  

The shackle assembly must be attached to the rear spring eye before the rear shackle is installed.

  1. Position the spring retaining plate and the U-bolts (loosely).
  2.  
  3. It will be necessary to jack the frame in some manner to align the spring and shackle with the spring hangers.
  4.  
  5. Install the shackle bolt and nut and reposition the spring if necessary in order to align the front eye. Position the front eyebolt and nut.
  6.  
  7. Torque the hanger and shackle fasteners to 110 ft. lbs. (149 Nm).
  8.  

Make sure that the bolts are free turning in their bushings prior to tightening.

  1. Lower the truck so that the weight is on the suspension components. Torque the U-bolt nuts to specification listed in the back of this section.
  2.  
  3. Lower the truck completely and remove the jacks.
  4.  

 
label.common.footer.alt.autozoneLogo