GM Corsica/Beretta 1988-1996 Repair Guide

Lower Ball Joint

Imprimir

INSPECTION



  1. Raise and safely support the front of the car, allowing the suspension to hang free.
  2.  
  3. Grasp the wheel at the top and the bottom and shake it in an in-and-out motion. Check for any horizontal movement of the steering knuckle relative to the lower control arm. Replace the ball joint if such movement is noted.
  4.  
  5. If the ball stud is disconnected from the steering knuckle and any looseness is detected, or if the ball stud can be twisted in its socket using finger pressure, replace the ball joint.
  6.  

REMOVAL & INSTALLATION



Only a lower ball joint is used in each lower arm. The MacPherson strut design does not use an upper ball joint.

1988-90 Vehicles

See Figure 1

  1. With the vehicle on the ground, break the lug nuts loose.
  2.  
  3. Raise and safely support the vehicle, then remove the wheel and tire assembly.
  4.  
  5. Use a 1 / 8 in. (3mm) drill bit to drill a hole through the center of each of the 3 ball joint rivets.
  6.  
  7. Use a 1 / 2 in. (13mm) drill bit to drill completely through the rivet.
  8.  
  9. Use a hammer and punch to remove the rivets. Drive them out from the bottom.
  10.  
  11. Use the special tool J-29330 or equivalent ball joint removal tool to separate the ball joint from the steering knuckle (see illustration). Don't forget to remove and discard the cotter pin.
  12.  
  13. Disconnect the stabilizer bar from the lower control arm, then remove the ball joint.
  14.  



Click image to see an enlarged view

Fig. Fig. 1: Lower ball joint removal and installation - 1988-90 vehicles

To install:
  1. Install the new ball joint into the control arm with the 3 bolts supplied as shown and tighten to 50 ft. lbs. (68 Nm).
  2.  
  3. Installation of the remaining components is in the reverse order of removal.
  4.  
  5. Tighten the castellated nut on the ball joint to 55 ft. lbs. (75 Nm) and use a new cotter pin.
  6.  
  7. Install the wheel and tire assembly, then carefully lower the vehicle.
  8.  
  9. Take the vehicle to a reputable repair shop to have the toe setting checked and adjusted if necessary.
  10.  

1991-96 Vehicles

See Figures 2, 3, 4 and 5

  1. With the vehicle on the ground, break the lug nuts loose.
  2.  
  3. Raise and safely support the vehicle.
  4.  
  5. Place jackstands under the suspension supports.
    1. Carefully lower the vehicle slightly, so the weight of the vehicle rest on the suspension supports and NOT on the control arms.
    2.