GM Corsica/Beretta 1988-1996 Repair Guide

Front Hub and Bearing and Steering Knuckle

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REMOVAL & INSTALLATION



See Figures 1, 2, 3, 4, 5, 6 and 7


WARNING
You will need a special tool to pull the bearing free of the halfshaft (drive axle), GM tool no. J-28733 or the equivalent. You should also use a halfshaft boot protector, GM tool no. J-33162 or the equivalent to protect the parts from damage on cars equipped with the 2.0L engine and boot protector J-34754 on all other engines.

  1. With the vehicle weight on the tires, break the hub nut loose.
  2.  
  3. Raise and safely support the vehicle. Remove the wheel and tire assembly.
  4.  
  5. Install a boot cover over the outer CV-joint boot.
  6.  
  7. Remove the brake caliper and support it aside (on a wire); do not allow the caliper to hang on the brake line.
  8.  
  9. Remove the rotor.
  10.  
  11. Remove the hub nut.
  12.  



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Fig. Fig. 1: Remove the hub nut from the vehicle

  1. Unfasten the hub and bearing mounting bolts.
  2.  



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Fig. Fig. 2: Remove the hub and bearing assembly mounting bolts

  1. Remove the brake rotor splash shield.
  2.  
  3. Install J 28733 or equivalent hub puller tool, then turn the bolt and press the hub and bearing from the halfshaft.
  4.  



Click image to see an enlarged view

Fig. Fig. 3: Attach a suitable puller to the hub and bearing to separate it from the halfshaft



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Fig. Fig. 4: Remove the hub and bearing assembly from the vehicle

  1. Disconnect the stabilizer link from the lower control arm.
  2.  
  3. Remove the cotter pin and the ball joint-to-knuckle attaching nut.
  4.  
  5. Separate the ball joint from the steering knuckle, using J 29330 or equivalent tool.
  6.  
  7. Remove the halfshaft from the knuckle and support it aside.
  8.  
  9. Matchmark the strut in relationship to the knuckle, for alignment purposes and remove the strut-to-knuckle attaching nuts.
  10.  
  11. Remove the knuckle from the strut.
  12.  
  13. Using a brass drift, remove the inner knuckle seal.
  14.  



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Fig. Fig. 5: Exploded view of the hub and bearing and steering knuckle assemblies - 1988-90 vehicles, 1991 similar



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Fig. Fig. 6: Hub and bearing and steering knuckle mounting - 1992-96 vehicles

To install:
  1. Clean and inspect the steering knuckle bore and the bearing mating surfaces.
  2.  
  3. Lubricate a new seal and the bearing with a high temperature wheel bearing grease, then using a driving tool, install the seal in the knuckle.
  4.  



Click image to see an enlarged view

Fig. Fig. 7: Use a suitable driver to install the knuckle seal

  1. Connect the ball joint to the knuckle and install the ball joint-to-knuckle attaching nut, hand tight.
  2.  
  3. Position the knuckle to the strut and install the attaching bolts. Align the matchmarks and tighten the attaching bolts to 129 ft. lbs. (175 Nm) for 1988-90 vehicles, and to 133 ft. lbs. (180 Nm) for 1991-96 vehicles. Tighten the ball joint-to-knuckle attaching nut to 55 ft. lbs. (75 Nm) for 1988-90 vehicles, and to 26 ft. lbs. (35 Nm) plus 60 degree rotation for 1991-96 vehicles.
  4.  
  5. Install a new O-ring between the bearing and knuckle assembly.
  6.  
  7. Install the splash shield, hub/bearing assembly, to the knuckle and install the attaching bolts. Tighten the attaching bolts to 67 ft. lbs. (90 Nm) for 1988-90 vehicles and 70 ft. lbs. (95 Nm) for 1991-92 vehicles.
  8.  
  9. Remove the boot cover from the outer CV-joint boot and slide the halfshaft into the knuckle assembly.
  10.  
  11. Install the hub washer and attaching nut, (use and new nut) on the halfshaft. Tighten the attaching nut to a partial torque of 71 ft. lbs. (100 Nm), at this time.
  12.  
  13. Connect the stabilizer link to the lower control arm.
  14.  
  15. Install the brake rotor, caliper and the wheel/tire assembly.
  16.  
  17. Lower the vehicle and final-tighten the hub nut to 191 ft. lbs. (259 Nm).
  18.  

 
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