Chrysler Full-Size Trucks 1967-1988 Repair Guide

Leaf Springs

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REMOVAL & INSTALLATION



See Figures 1 through 5

  1. Raise the truck and safely support the rear with jackstands under the frame. Be sure that the front wheels are chocked and that the parking brake is set. The wheels should be touching the floor, but the weight must be off of the springs.
  2.  
  3. Remove the nuts, lockwashers and U-bolts that hold the axle to the springs.
  4.  
  5. Remove the front pivot bolt.
  6.  
  7. Disconnect and remove the outer shackle and bolt assembly from the hanger, then remove the spring.
  8.  

To install:
  1. Position the spring in place, then install the eye bolt and nut. Do not tighten the bolt yet.
  2.  
  3. Install the shackles and bolts. Tighten them just enough to make them snug.
  4.  
  5. Make sure that the spring center bolt enters the locating hole in the axle pad. On headless-type spring bolts, install the bolts with the lock groove lined up with the lockbolt hole in the bracket. Install the lockbolt and tighten the lockbolt nut. Install the lubrication fittings.
  6.  



Click image to see an enlarged view

Fig. Fig. 1: Rear suspension with auxiliary spring-1972-78 trucks

  1. Install the U-bolts, lockwashers and nuts. Make them just snug for now. Align the auxiliary spring parallel with the main spring.
  2.  
  3. Lower the truck to its normal position with the weight on the springs.
  4.  
  5. Tighten all bolts and nuts to specification with the truck's weight on the suspension.
  6.  

1967-68


1 / 2 -20 U-bolt nuts: 4-70 ft. lbs. (81-94 Nm)
 
3 / 4 -16 U-bolt nuts: 175-225 ft. lbs. (237-305 Nm)
 
9 / 16 -18 U-bolt nuts: 120-130 ft. lbs. (162-176 Nm)
 
5 / 8 -18 U-bolt nuts: 175-200 ft. lbs. (237-271 Nm)
 
13 / 32 -20 shackle bolts: 35-40 ft. lbs. (47-54 Nm)
 
7 / 16 -20 shackle bolts: 45-50 ft. lbs. (61-67 Nm)
 
Eye bolt: 150-175 ft. lbs. (203-237 Nm)
 

1969-73


U-bolt nuts:
 



D100-50-80 ft. lbs. (67-108 Nm)
 
All others-100-150 ft. lbs. (135-203 Nm)
 
Shackle bolts:
 



D100-65-105 ft. lbs. (88-142 Nm)
 
All others-125-175 ft. lbs. (169-237 Nm)
 
Eye bolt:
 



D100-65-105 ft. lbs. (142 Nm)
 
All others-125-175 ft. lbs. (169-237 Nm)
 

1974


U-bolt nuts:
 



100 series-85 ft. lbs. (115 Nm)
 
200/300-115 ft. lbs. (155 Nm)
 
Shackle bolts: 80 ft. lbs. (108 Nm)
 
Eye Bolt: 80 ft. lbs. (108 Nm)
 

1975-78


U-bolt nuts:
 



1 / 2 -20 nuts-65 ft. lbs. (88 Nm)
 
9 / 16 -18 nuts-110 ft. lbs. (149 Nm)
 
Shackle bolts and eye bolts:
 



1 / 2 -20-93 ft. lbs. (126 Nm)
 
5 / 8 -18-160 ft. lbs. (216 Nm)
 
3 / 4 -16-200 ft. lbs. (271 Nm)
 

1979-88


U-bolt nuts:
 



1 / 2 -20 nuts-65 ft. lbs. (88 Nm)
 
9 / 16 -18 nuts-110 ft. lbs. (149 Nm)
 
Shackle bolts and eye bolts:
 



1 / 2 -20-95 ft. lbs. (128 Nm)
 
5 / 8 -18-125 ft. lbs. (169 Nm)
 
3 / 4 -16-155 ft. lbs. (210 Nm)
 



Click image to see an enlarged view

Fig. Fig. 2: Rear suspension for the 1972-88 Ramcharger/Trail Duster D100/150 and W100/150



Click image to see an enlarged view

Fig. Fig. 3: Rear suspension with auxiliary spring 1972-78 D100/200 and 1979-88 D100/150



Click image to see an enlarged view

Fig. Fig. 4: Rear suspension with auxiliary spring for D250/W250, D300/W300 and D350/W350



Click image to see an enlarged view

Fig. Fig. 5: Rear sway bar on W-series trucks

 
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