Nissan Pick-ups and Pathfinder 1970-1988

Upper Control Arm

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REMOVAL & INSTALLATION



1978-83 Models

See Figures 1 and 2

  1. Perform Steps 1-4 of the Upper Ball Joint removal procedure.
  2.  
  3. Remove the bolts retaining the upper arm pivot shaft and remove the shaft, arm and camber adjusting shims from the body. Note the location of the shims so that they may be installed in their original positions during assembly.
  4.  
  5. To remove the upper arm shaft and bushings from the arm, remove the nuts and washers from the shaft. Use a press, first on one end of the shaft and then the other, to press out the bushings. Remove the shaft.
  6.  

To install:
  1. Coat the bushing with soapy water and press it into the upper arm. Install the washers onto the shaft and install the shaft into the arm. Be sure the chamfered side of the washer is against the shaft flange. Measure the distance between the outer collar on the bushing and the washer on the shaft (dimension C in the illustration); it should exceed 0.177 in. (4.5mm).
  2.  
  3. Press the other bushing into the arm, and check dimension C . Also check the distance between the outer collars of both bushings (dimension D ) and the distance between the end of the bushing and the centerline of the shaft mounting bolt bore (dimension E ). D should be 5.69-5.77 in. (144.6-146.6mm); E should be 1.114 in. (28.3mm).
  4.  
  5. Rotate the pivot shaft in the arm until the angle is as specified in the illustration. Install the nuts and washers on the shaft. Tighten the bushings to 56-76 ft. lbs.
  6.  
  7. Install the upper arm and shaft assembly to the body, replacing the camber shims in their original locations. Tighten the bolts to 80-108 ft. lbs.
  8.  
  9. Follow Step 6 of the upper ball joint removal procedure.
  10.  



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Fig. Fig. 1: Upper pivot shaft and bushing dimension for 1978-83 models



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Fig. Fig. 2: 1978-83 upper arm pivot shaft installation before tightening shaft nuts

1984-88 Models

See Figures 3 and 4

  1. Separate the upper ball joint from the knuckle as previously described.