Chevrolet Blazer/Jimmy 1969-1982 Repair Guide

Springs

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REMOVAL & INSTALLATION





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Fig. Fig. 1 Front coil spring and stabilizer bar mounting-2WD models



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Fig. Fig. 2 FRONT SUSPENSION AND STEERING COMPONENT LOCATIONS-4WD MODELS 1. Differential cover 2. Shock absorber 3. U-bolts 4. Axle 5. Tie rod adjuster sleeve 6. Stabilizer bar 7. Center link 8. Steering knuckle 9. Leaf springs 10. Steering damper 11. Drag link


CAUTION
Springs, particularly coil springs, are under considerable tension. Be very careful when removing and installing them; they can exert enough force to cause very serious injuries.

Two Wheel Drive
  1. Raise the vehicle and support it under the frame so that the control arms will hang free.
  2.  
  3. Remove the lower shock absorber mounting bolt. Detach the stabilizer bar from the lower control arm.
  4.  
  5. Place a floor jack under the lower control arm cross-shaft.
  6.  


CAUTION
As a safety precaution, install a chain through the spring and the lower control arm.

  1. Raise the jack. This will remove the tension on the lower control arm so that the two U-bolts which secure the cross-shaft can be removed.
  2.  
  3. Lower the control arm slowly by releasing the floor jack to the point where the spring can be removed.
  4.  
  5. Remove the spring.
  6.  

To install:

  1. Place the spring on the control arm and then, using a jack, slowly raise the control arm. Use the safety chain as described in Step 3.
  2.  
  3. Place the control arm cross-shaft onto the crossmember and then install the U-bolts and the attaching nuts. Make certain that the indexing hole in the cross-shaft is lined up with the crossmember stud.
  4.  
  5. Tighten the U-bolt nuts to 45 ft. lbs. through 1975, 85 ft. lbs. for 1976 and later models. Remove the safety chain.
  6.  
  7. Install the lower part of the shock absorber and the stabilizer bar.
  8.  
  9. Lower the vehicle.
  10.  

Four Wheel Drive


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Fig. Fig. 3 Front leaf spring mounting-4WD models



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Fig. Fig. 4 Front spring shackle stop-1969-72 models

1973 four wheel drive models have only one short front spring-to-frame rubber bumper on the right side. If you drive hard in rough terrain, there is a good chance of the front driveshaft moving up high enough to break the starter. The cure is to install new longer bumpers (no. 344717) on both sides. You will have to drill a hole for the left one.

  1. Raise and support the truck under the front axle and frame so that the tension on the springs is relieved.
  2.  
  3. Remove the shackle upper retaining bolt and the front spring eye bolt.
  4.  
  5. Remove the spring-to-axle U-bolt nuts. Pull off the spring, the lower plate, and the spring pads.
  6.  
  7. Remove the shackle-to-spring bolt, bushings, and shackle.
  8.  
  9. To replace the bushing, place the spring onto a press or vise and press out the bushing. Press in the new bushing. The new bushing should protrude evenly on both sides of the spring.
  10.  

To install:

  1. Install the spring shackle bushings into the spring and then attach the shackle. Do not tighten the bolt.
  2.  
  3. Place the upper spring cushion onto the spring.
  4.  
  5. Place the front of the spring into the frame and install the bolt but do not tighten it.
  6.  
  7. Position the shackle bushing into the frame and attach the rear shackle but do not tighten it.
  8.  
  9. Install the lower spring pad and the spring retainer plate. Tighten the U-bolts to 150 ft. lbs. for 1973-82 models, 120 ft. lbs. for 1969-72.
  10.  
  11. Tighten the rear spring shackle bolts and the rear eye bolts to 50 ft. lbs. and the front eye bolts to 90 ft. lbs.
  12.  
  13. Lower the vehicle.
  14.  

If there is a rear shackle stop (1969-72), adjust the clearance between it and the spring eye to 1 / 8 inch.

 
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