Infinity_QX4_1998-2003

Pinion Seal

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Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove the or disconnect the following:
    NOTE
    The front brake calipers must be removed so that there is no additional drag when measuring pinion bearing preload.



    Driveshaft
     
    Front wheels
     
    Front brake calipers
     

  4.  
  5. Use an inch lb. torque wrench and measure the amount of torque required to maintain pinion rotation through several revolutions.
  6.  
  7. Matchmark the pinion flange to the pinion.
  8.  
  9. Remove the or disconnect the following:

    Pinion flange
     
    Oil seal

    Click image to see an enlarged view

    Fig. Use a puller to remove the front pinion flange.



    Click image to see an enlarged view

    Fig. Use Special Tool J-34286 to remove the front oil seal.

     

  10.  

To install:

  1. Install or connect the following:

    Pinion seal
     
    Pinion flange
     

  2.  
  3. Rotate the pinion flange occasionally while tightening the flange nut to make sure the pinion bearings seat correctly.
  4.  
  5. Take frequent bearing preload torque readings. Tighten the flange nut to achieve the preload torque readings originally recorded. Do not exceed 137 - 217 ft. lbs. (186 - 294 Nm) torque when tightening the pinion flange nut.
    CAUTION
    If the bearing preload can not be achieved at the specified torque, remove the pinion bearing and install a new adjustment spacer.

  6.  
  7. Install or connect the following:

    Front brake calipers
     
    Front wheels
     
    Driveshaft. Tighten the fasteners to 29 - 33 ft. lbs. (39 - 44 Nm).
     

  8.  
  9. Fill the differential with gear lubricant and check for leaks.

    Click image to see an enlarged view

    Fig. Use Special Tool J-25405 to drive in the front pinion oil seal



    Click image to see an enlarged view

    Fig. Use Special Tool J-44195 to hold the pinion flange when installing the flange nut.

  10.  

 
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