Chrysler RAM50/D50/Arrow 1979-1993 Repair Guide

Lower Control Arm and Bushings

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REMOVAL & INSTALLATION



2WD Models

See Figures 1, 2 and 3

  1. Raise the vehicle and support it safely on jackstands.
  2.  
  3. Remove the wheel from the side of the vehicle in need of repair.
  4.  
  5. Remove the shock absorber.
  6.  
  7. Disconnect the sway bar and strut bar from the lower control arm.
  8.  
  9. Remove the bump stopper and the strut bar from the lower arm.
  10.  
  11. Install spring compressor tool MB990792 or equivalent to the coil spring and compress the spring.
  12.  
  13. Remove the cotter pin and loosen lower ball joint nut, but do not remove the nut from the ball joint-this will keep the lower arm from springing open.
  14.  
  15. Release the lower ball joint taper using tool C-3564-A or equivalent. Remove the lower ball joint nut.
  16.  
  17. Remove the tool and remove the ball stud from the knuckle.
  18.  
  19. Pull the arm down and remove the spring (still compressed) with the rubber isolation pad from the vehicle.
  20.  
  21. Remove the lower arm shaft mounting nuts and remove the arm from the vehicle.
  22.  

To install:
  1. Install the arm to the crossmember finger-tight. Tighten the two lower arm shaft rear mounting nuts to 7-10 ft. lbs. (9-14 Nm). Install the spring with the rubber isolators. Tighten the compressor so the lower ball joint can be inserted through the knuckle.
  2.  
  3. Tighten the lower ball joint nut to 87-130 ft. lbs. (120-180 Nm) Install a new cotter pin through the castle nut slot and ball joint stud.
  4.  
  5. Carefully loosen the spring compressor, making sure the spring seats properly at both ends.
  6.  



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Fig. Fig. 1: Lower control arm components-2WD models



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Fig. Fig. 2: Remove the shock and install tool MB990792 or equivalent to compress the coil spring slightly-2WD models



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Fig. Fig. 3: Use tool C-3564-A (or equivalent) to disconnect the lower ball joint from the knuckle-2WD models

  1. Remove the spring compressor.
  2.  
  3. Connect the sway bar and strut bar to the lower control arm-refer to the sway bar procedures in this section.
  4.  
  5. Install the shock absorber, refer to the shock absorber procedures in this section.
  6.  
  7. Install the wheel and lower the vehicle.
  8.  
  9. When the weight of the vehicle is completely on the suspension, bounce it once or twice and tighten the lower control arm to cross-member mounting nut to 40-54 ft. lbs. (55-75 Nm).
  10.  
  11. Have the front end aligned.
  12.  

4WD Models See Figures 4, 5 and 6

  1. Raise the vehicle and support it safely on jackstands.
  2.  
  3. Remove the wheels.
  4.  
  5. Remove the skid plate.
  6.  
  7. Remove the anchor arm assembly and the torsion bar-refer to the previous procedures in this section.
  8.  
  9. Remove the shock absorber lower attaching bolt.
  10.  
  11. Disconnect the stabilizer bar from the lower control arm.
  12.  



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Fig. Fig. 4: Lower control arm components-4WD models



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Fig. Fig. 5: Remove the shock absorber lower part, the compress the shock-4WD models



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Fig. Fig. 6: Using tool C3894-A, separate the ball joint from the steering knuckle-4WD models

  1. Remove the cotter pin and the nut from the lower ball stud. Separate the lower ball stud from the steering knuckle using a suitable separating tool such as C3894-A or equivalent.
  2.  
  3. Remove the pivot bolts and remove the arm from the vehicle.
  4.  

To Install:
  1. Install the lower control arm to the vehicle.
  2.  
  3. Install the pivot bolts, but do not tighten beyond snug.
  4.  
  5. Insert the ball stud into the steering knuckle. Install the nut, tighten to 87-130 ft. lbs. (120-180 Nm) and install a new cotter pin.
  6.  
  7. Attach the stabilizer bar to the control arm and install the shock mount bolts-refer to the procedures in this section.
  8.  
  9. Install the torsion bar and turn the adjustment nut (anchor mount nut) clockwise to apply a load to the bar-refer to the procedures in this section.
  10.  
  11. Install the wheel. Lower the vehicle so the weight of the vehicle is completely on the suspension.
  12.  
  13. Bounce the suspension once or twice. Tighten the pivot nuts to 101-116 ft. lbs. (140-160 Nm).
  14.  
  15. Set the ride height. Refer to the torsion bar procedure in this section.
  16.  
  17. Align the front end.
  18.  

CONTROL ARM BUSHING REPLACEMENT 2WD Models



  1. Once the lower control arm is removed from the vehicle, the bushings can be removed from the control arm. Pull or pry the bushings out of each side of the control arm.
  2.  
  3. Push the new bushings into the arm in the same positions as the old bushings. Make sure the bushings are installed all the way into the arm.
  4.  

4WD Models See Figures 7 and 8

  1. Using the special tool MB990958-01, remove the bushing from the rear frame bracket.
  2.  

When removing the left-hand bushing, detach the differential carrier-refer to Manual Transmission .

  1. Using the same special tool, press the new bushing into the frame bracket.
  2.  
  3. Remove the bushing from the lower control arm by using the tool MB990883-01.
  4.  
  5. Coat the bushing and the lower control arm with soap solution and press the new bushing into the lower control arm by using the same special tools. Take care not to twist or tilt the bushing.
  6.  



Click image to see an enlarged view

Fig. Fig. 7: Remove the frame bracket lower control arm bushings with tool MB990958-01-4WD models



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Fig. Fig. 8: Use the same tool to install the new bushings to the frame bracket-4WD models

Press the bushing again from the opposite side to equalize bushing projections at both ends.

 
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