Infiniti Car 1998-05

Torsion Bar

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Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Loosen the lug nuts.
  4.  
  5. Remove or disconnect the following:

    Wheels
     

  6.  


WARNING
Be sure to disconnect the Anti-lock Brake System (ABS) wheel sensor from the assembly. Failure to do so may result in damage to the sensor wire and the sensor becoming inoperative.



Brake calipers and suspend them with a piece of wire. Do not let them hang by the hose
 

  1. Using a transmission jack, raise the torsion beam a little, then remove the suspension mounting bolts.
  2.  
  3. Lower the jack and remove the suspension assembly.
  4.  
  5. The lateral link and control rod can now be removed.
  6.  
  7. Inspect the torsion beam and control rod for cracks, wear and deformation. The length of the lateral link and control rod is as follows:
    1. A-8.15-8.19 in. (207-208mm).
    2.  
    3. B-15.51-15.55 in. (394-395mm).
    4.  
    5. C-23.66-23.74 in. (601-603mm).
    6.  
    7. D-4.17-4.25 in. (106-108mm).
    8.  

  8.  


    Click image to see an enlarged view

    Fig. Measure the control rod and lateral links at these points-G20 and I30 models


To install:

  1. When installing the control rod, connect the bushing with the smaller inner diameter to the lateral link. Install the lateral link and the control rod on the torsion beam. Place the lateral link with the arrow topside.
  2.  
  3. Place the lateral link and control rod horizontally against the beam, and tighten the bolts. Refer to the illustration.
  4.  
  5. Secure the torsion beam to the vehicle. Make sure the lateral link is horizontal , then tighten the link to the chassis.
  6.  
  7. Attach the struts to the torsion beam and tighten the fasteners.
  8.  
  9. Tighten the torsion beam-to-chassis bolts.
  10.  
  11. Install the calipers, ABS sensor and wheels. Lower the vehicle to the ground. Final tighten the lug nuts.
  12.  


    Click image to see an enlarged view

    Fig. Be sure to install the control rod correctly-G20 and I30 models



    Click image to see an enlarged view

    Fig. The lateral link must be in the horizontal position when tightening the bolts-G20 and I30 models



    Click image to see an enlarged view

    Fig. Tighten the torsion beam-to-chassis bolts with the suspension unloaded-G20 and I30 models


  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Loosen the lug nuts.
  4.  
  5. Remove or disconnect the following:
    WARNING
    Be sure to disconnect the ABS wheel sensor from the assembly. Failure to do so may result in damage to the sensor wire and the sensor becoming inoperative.



    Wheels
     



    Brake calipers and suspend them with a piece of wire. Do not let them hang by the hose
     

  6.  
  7. Using a transmission jack, raise the torsion beam a little, then remove the suspension mounting bolts.
  8.  
  9. Lower the jack and remove the suspension assembly.
  10.  
  11. The lateral link and control rod can now be removed.
  12.  
  13. Inspect the torsion beam and control rod for cracks, wear and deformation. The length of the lateral link and control rod is as follows:
    1. A-8.15-8.19 in. (207-208mm).
    2.  
    3. B-15.51-15.55 in. (394-395mm).
    4.  
    5. C-23.66-23.74 in. (601-603mm).
    6.  
    7. D-4.17-4.25 in. (106-108mm).

      Click image to see an enlarged view

      Fig. Measure the control rod and lateral links at these points-G20 and I30 models

    8.  

  14.  

To install:

  1. When installing the control rod, connect the bushing with the smaller inner diameter to the lateral link. Install the lateral link and the control rod on the torsion beam. Place the lateral link with the arrow topside.

    Click image to see an enlarged view

    Fig. Be sure to install the control rod correctly-G20 and I30 models

  2.  
  3. Place the lateral link and control rod horizontally against the beam, and tighten the bolts. Refer to the illustration.
  4.  
  5. Secure the torsion beam to the vehicle. Make sure the lateral link is horizontal , then tighten the link to the chassis.

    Click image to see an enlarged view

    Fig. The lateral link must be in the horizontal position when tightening the bolts-G20 and I30 models

  6.  
  7. Attach the struts to the torsion beam and tighten the fasteners.
  8.  
  9. Tighten the torsion beam-to-chassis bolts.

    Click image to see an enlarged view

    Fig. Tighten the torsion beam-to-chassis bolts with the suspension unloaded-G20 and I30 models

  10.  
  11. Install the calipers, ABS sensor and wheels. Lower the vehicle to the ground. Final tighten the lug nuts.
  12.  

 
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