Infinity_QX4_1998-2003

Pinion Seal

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Removal & Installation



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



    Driveshaft
     
    Rear wheels
     
    Brake drums
     

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

    Pinion flange
     
    Wheel speed sensor and rotor, if equipped
     
    Oil seal
     
    Pinion bearing
     
    Collapsible spacer
     

  8.  

To install:


NOTE
Use a new collapsible spacer and wheel speed sensor rotor for assembly.

  1. Install or connect the following:

    Collapsible spacer
     
    Pinion bearing
     
    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
    Never loosen the pinion nut to reduce bearing preload. If it is necessary to reduce bearing preload, install a new collapsible spacer.

  6.  
  7. Install or connect the following:

    Brake drums
     
    Rear wheels
     
    Driveshaft. Tighten the fasteners to 58 - 65 ft. lbs. (78 - 88 Nm).
     

  8.  
  9. Fill the differential with gear lubricant and check for leaks.
  10.  

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



    Driveshaft
     
    Rear wheels
     
    Brake drums
     

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

    Pinion flange
     
    Oil seal
     

  8.  

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:

    Brake drums
     
    Rear wheels
     
    Driveshaft. Tighten the fasteners to 58 - 65 ft. lbs. (78 - 88 Nm).
     

  8.  
  9. Fill the differential with gear lubricant and check for leaks.
  10.  

 
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