Volvo Coupes/Sedans/Wagons 1970-1989 Repair Guide

Upper Ball Joint

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INSPECTION



140 Series, 164 Models and 1800 Series

See Figure 1

If the upper ball joint is worn, the wheel and tire assembly will exhibit excessive play when the joint is unloaded. Place a jack beneath the lower control arm and lift the wheel until clear of the ground. Make sure that the upper control arm is not making contact with the rubber stop.



Click image to see an enlarged view

Fig. Fig. 1: Details of the upper ball joint-1800 series

Firmly grasp the top and bottom of the tire and try to rock it in and out; that is, intermittently push the top of the tire towards the engine compartment, then pull it away from the car, while simultaneously doing the opposite to the bottom of the tire. Replace the upper ball joint if the radial play of the wheel and tire assembly is excessive.

Do not confuse possible wheel bearing play with ball joint play. It is advisable that the wheel bearing adjustment procedure in Brakes be followed prior to replacing the ball joint.

REMOVAL & INSTALLATION



140 and 160 Series
  1. Remove the hub cap and loosen the lug nuts two or three turns.
  2.  
  3. Jack up the front of the vehicle and place jackstands beneath the front jacking points. Remove the wheel.
  4.  
  5. Loosen, but do not remove the nut for the upper ball joint. With a hammer, tap around the ball joint stud on the steering knuckle until it loosens. Remove the nut, and safety wire the upper end of the steering knuckle to the stabilizer bar to avoid straining the flexible brake hoses.
  6.  
  7. Loosen the nut for the upper control arm shaft 1 / 2 turn. Lift up the control arm slightly and press out the old ball joint with a press tool and a sleeve.
  8.  

To install:
  1. Make sure that the rubber cover of the new ball joint is filled with multipurpose grease. Bend the pin end over the slot, and make sure that the grease forces its way out.
  2.  
  3. Press the ball joint into the upper control arm using the press tool, a sleeve, and a drift. It is imperative that the ball joint be aligned so that the slot comes into line with the longitudinal shaft of the control arm (either internally or externally) as the pin has maximum movement along this line.
  4.  
  5. Lower the upper control arm to its operating position, and tighten the shaft nuts to 40-45 ft. lbs. (54-61 Nm). Remove the safety wire and place the steering knuckle in position. Install and tighten the ball nut to 60-70 ft. lbs. (81-95 Nm). If the pin rotates during tightening, clamp it firmly with a screw vise.
  6.  
  7. Install the wheel. Remove the jackstands and lower the vehicle. Tighten the lug nuts to 85-90 ft. lbs. (115-122 Nm), then install the hub cap.
  8.  

1800 Series
  1. Remove the hub cap and loosen the lug nuts two or three turns.
  2.  
  3. Jack up the front of the vehicle and place jackstands beneath the lower control arms. Remove the wheel.
  4.  
  5. Remove the two nuts and bolts which hold the ball joint to the upper control arm. Lift the upper control arm up and out of the way.
  6.  
  7. Remove the clamping nut and bolt which secure the ball joint to the steering knuckle. Remove the upper ball joint, sealing washers, and rubber cover assembly.
  8.  

To install:
  1. Make sure that the rubber cover of the new ball joint is filled with multipurpose grease. If the old ball joint is being reused, make sure that the rubber cover is not damaged, and fill it with grease.
  2.  
  3. After making sure that the sleeve and sealing washers (circlips) are positioned properly, place the ball joint assembly on the steering knuckle and install the clamping nut and bolt.
  4.  
  5. Lower the upper control arm into position over the ball joint and install the attaching nuts and bolts.
  6.  
  7. Install the wheel. Remove the jackstands and lower the vehicle. Tighten the lug nuts to 85-90 ft. lbs. (115-122 Nm), then install the hub cap.
  8.  

 
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