Infinity_FX35_FX45_2003-2005

Upper Control Arm

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Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Raise and safely support the vehicle.
  4.  
  5. Remove the rear tire.
  6.  
  7. Remove the stabilizer connecting rod mounting bracket from the suspension arm.
  8.  
  9. Remove the halfshaft from the vehicle.
  10.  
  11. Remove the cotter pin of the suspension arm ball joint, and loosen the nut.
  12.  
  13. Use a ball joint remover or suitable tool to remove the suspension arm from the axle. Be careful not to damage the ball joint boot.
    CAUTION
    Temporarily tighten the mounting nut to prevent damage to the threads and to prevent the ball joint remover from coming off.

  14.  
  15. Remove the fixing nuts and bolts between the suspension arm and the rear suspension member.
  16.  
  17. Remove the suspension arm from vehicle.
  18.  
  19. Check the suspension arm and bushing for deformation, cracks, or damage. If any non-standard condition is found, replace it.
  20.  
  21. Check the boot of the ball joint for cracks, or damage, and also for grease leakage.
  22.  
  23. Manually move the ball stud to confirm it moves smoothly with no binding.
    NOTE
    Before measuring, move ball joint at least ten times by hand to check for smooth movement.

  24.  
  25. Hook a spring scale at the cotter pin mounting hole. Confirm the spring scale measurement value is within 2.18 - 14.8 lbs. (9.7 - 66.0 N) when the ball joint stud begins moving. If it is outside the specified range, replace the suspension arm assembly.
  26.  
  27. Attach the mounting nut to the ball stud. Make sure the rotating torque is within 5 - 30 inch lbs. (0.5 - 3.4 Nm) with a preload gauge . If it is outside the specified range, replace the suspension arm assembly.
  28.  
  29. Move the tip of the ball joint in the axial direction to check for looseness. If it is outside the specified range of 0 in. (0mm), replace the suspension arm assembly.
  30.  

To install:

  1. Install the suspension arm onto the vehicle.
  2.  
  3. Install the fixing nuts and bolts between the suspension arm and the rear suspension member. Tighten them to 53 ft. lbs. (73 Nm).
  4.  
  5. Reattach the suspension arm ball joint to the axle. Tighten the ball joint nut to 96 ft. lbs. (130 Nm).
  6.  
  7. Install a new cotter pin.
  8.  
  9. Install the halfshaft.
  10.  
  11. Install the stabilizer connecting rod mounting bracket onto the suspension arm, and tighten the two mounting bolts to 41 ft. lbs. (55 Nm).
  12.  
  13. Install the rear tire.
    NOTE
    Refer to component parts location and do not reuse non-reusable parts.



    Perform final tightening of the rear suspension member installation position (rubber bushing) under unladen conditions with the tires on level ground.
     

  14.  
  15. Check wheel alignment.
  16.  
  17. After adjusting wheel alignment, adjust the neutral position of the steering angle sensor.
  18.  

 
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