LaCrosse 2006-2007

Lower Control Arms

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Bushing Replacement



Horizontal
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove the lower control arm.
  4.  
  5. Secure the lower control arm in a vise.
    NOTE
    Use a 1 / 2  x 20 in standard thread nut with the puller bolt.



    Click image to see an enlarged view

    Fig. Tool assembly for horizontal bushing removal

  6.  
  7. Assemble the bushing removal tools as indicated:

    The nut (1)
     
    The J 21474-01 washer (2)
     
    The J 21474-01 bearing (3)
     
    The J 21474-5 (4)
     
    The J 21474-01 puller bolt (5)
     

  8.  
  9. Tighten the puller bolt (5) until the bushing is removed.
  10.  
  11. Disassemble the J 21474-01 and J 21474-5.
  12.  

To install

  1. Lubricate the bushing with liquid hand soap or equivalent.
    NOTE
    Use a 1 / 2  x 20 in standard thread nut with the puller bolt.



    Click image to see an enlarged view

    Fig. Tool assembly for horizontal bushing installation

  2.  
  3. Assemble the following bushing installation tools as indicated:

    The nut (1)
     
    The J 21474-01 washer (2)
     
    The J 21474-01 bearing (3)
     
    The J 21474-5 (4)
     
    The J 21474-01 puller bolt (5)
     

  4.  
  5. Tighten the puller bolt (5) until the bushing is installed into the control arm.
  6.  
  7. Disassemble the J 21474-01 and J 21474-5 .
  8.  
  9. Remove the control arm from the vice.
  10.  
  11. Install the lower control arm.
  12.  

Vertical
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove the lower control arm.
  4.  
  5. Secure the lower control arm in a vice.
  6.  
  7. Mark the lower control arm along the flat edge of the bushing flange.
    NOTE
    Apply high pressure lubricant such as J 23444-A, or equivalent, to the threads of J 21474-27.



    Click image to see an enlarged view

    Fig. Mark the lower control arm along the flat edge of the bushing flange



    Click image to see an enlarged view

    Fig. For vertical bushing removal, assemble the tool as shown

  8.  
  9. Assemble the following bushing removal tools, or equivalent, as shown:

    J 21474-27
     
    J 21474-13
     
    J 34126
     
    J 35379
     
    J 21474-2
     
    J 21474-4
     

  10.  
  11. Tighten J 21474-4.
  12.  
  13. Disassemble the bushing removal tools.
  14.  

To install:


NOTE
You MUST install the lower control arm vertical bushing in the same position in order to maintain the original vehicle ride, handling, and road feel.



Click image to see an enlarged view

Fig. Vertical bushing alignment

  1. Align the flat edge (1) of the bushing flange to the mark in the control arm. Ensure that the flat edge of the bushing flange is 30° (2) from the centerline of the lower control arm. Ensure that the thin slot in the bushing is facing outboard.
  2.  
  3. Insert the bushing into the control arm.
    NOTE
    Apply J 23444-A or equivalent to the threads of J 21474-27 .



    Click image to see an enlarged view

    Fig. For vertical bushing installation, assemble the tool as shown

  4.  
  5. Assemble the following bushing installation tools as shown:

    J 21474-27
     
    J 21474-13
     
    J 21474-5
     
    J 21474-4
     

  6.  
  7. Tighten J 21474-4.
  8.  
  9. Disassemble the bushing installation tools.
  10.  
  11. Install the lower control arm.
  12.  

Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions Section.
    WARNING
    Use only the recommended tools for separating the ball joint from the knuckle. Do NOT hammer or pry the ball joint from the knuckle. Failure to use the recommended tools may cause damage to the ball joint and seal.


    NOTE
    Use the ignition key in order to unlock the steering column.

  2.  
  3. Turn the steering wheel in order to move the front of the applicable wheel to the outboard most position.
    NOTE
    Use ONLY a frame-contact type vehicle lift or a floor jack at the recommended lift points. Do NOT use a suspension-contact type vehicle lift. Do NOT lift the vehicle by the lower control arms.

  4.  
  5. Raise and support the vehicle.
  6.  
  7. Remove the tire and wheel.
  8.  
  9. If applicable, disconnect the ABS wheel speed sensor connector.
  10.  
  11. If applicable, disconnect the ABS wheel speed sensor jumper harness from the harness retainer clips.
  12.  
  13. Remove the cotter pin from the ball stud.
  14.  
  15. Loosen the ball stud nut.
  16.  
  17. Install tool J 41820 over the ball stud and lower control arm as shown.
  18.  
  19. Rotate the ball stud nut counterclockwise in order to separate the ball stud from the steering knuckle.
  20.  
  21. Remove the tool.
  22.  
  23. Remove the ball stud nut.
  24.  
  25. Remove the lower control arm bolts and nuts.
  26.  
  27. Remove the lower control arm.
  28.  

To install:

Click image to see an enlarged view

Fig. Lower control arm mounting

  1. Install the lower control arm.
  2.  
  3. Install the control arm bolts and nuts. Do not tighten at this time.
    NOTE
    Align the ball stud cotter pin hole parallel to the knuckle in order to ease the cotter pin installation.

  4.  
  5. Install the ball stud to the knuckle.
  6.  
  7. Install the ball stud castle nut. Tighten the nut to 15 ft. lbs. (20 Nm) plus 120°.
    NOTE
    Do NOT loosen the ball stud nut in order to align the ball stud nut slots to the ball stud cotter pin hole.

  8.  
  9. If necessary, tighten the ball stud castle nut in order to align the ball stud castle nut slot to the ball stud cotter pin hole.
    NOTE
    If applicable, ensure that the cotter pin ends do NOT contact the ABS wheel speed sensor, the ABS sensor connector or the drive axle.

  10.  
  11. Install a NEW cotter pin and bend the ends as shown in either example.
  12.  
  13. If applicable, connect the ABS wheel speed sensor jumper harness to the harness retainer clips.
  14.  
  15. If applicable, connect the ABS wheel speed sensor connector.
    NOTE
    This is a prevailing torque type fastener. This fastener may be reused ONLY if the fastener and its counterpart are clean and free from rust and the fastener develops 27 inch lbs. (3 Nm) of torque against its counterpart prior to the fastener seating. If the fastener does not meet these criteria, REPLACE the fastener.

  16.  
  17. Install the lower control arm nuts. Tighten the lower control arm nuts to 92 ft. lbs. (125 Nm).
  18.  
  19. Install the tire and wheel.
  20.  
  21. Lower the vehicle.
  22.  

 
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