Nissan Frontier, Xterra 1998-05

Pinion Seal

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Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Driveshaft
     
    Front wheels
     
    Front brake calipers
     

  4.  


NOTE
The front brake calipers must be removed so that there is no additional drag when measuring pinion bearing preload.

  1. Use an inch lb. torque wrench and measure the amount of torque required to maintain pinion rotation through several revolutions.
  2.  
  3. Remove or disconnect the following:

    Pinion flange
     
    Oil seal
     

  4.  

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 137-180 ft. lbs. (186-245 Nm) torque when tightening the pinion flange nut.
  6.  


CAUTION
If the bearing preload can not be achieved at the specified torque, remove the pinion bearing and install a new adjustment spacer.

  1. Install or connect the following:

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

  2.  
  3. Fill the differential with gear lubricant and check for leaks.
  4.  

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove 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. Remove 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:

    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.
  10.  

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove 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. Remove 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 137-180 ft. lbs. (186-245 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.
  10.  

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove 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. Remove 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:

    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.
  10.  

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove 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. Remove 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 137-180 ft. lbs. (186-245 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.
  10.  

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Raise and support the vehicle safely. Remove the tire and wheel assemblies.
  4.  
  5. Remove the brake calipers and position them to the side. Do not disconnect the fluid lines. Do not press the brake pedal with the calipers removed.
  6.  
  7. Remove the ABS sensor harness from its mount on the knuckle.
  8.  
  9. Support the lower link, using a suitable jack. Separate the upper ball joint stud from the steering knuckle using tool ST2902001 (J-24319-01) or equivalent.
    NOTE
    Support the lower link using a suitable jack.

  10.  
  11. Remove the rear engine cover.
  12.  
  13. Remove the right and left halfshafts from the front final drive, using the proper tool.
  14.  
  15. Disconnect the front driveshaft from the front final drive. Reposition it out of the way, using wire.
  16.  
  17. Measure the drive pinion bearing preload with tool ST3127S00 (J-25765-A) or equivalent. Record the measurement.
  18.  
  19. Put a mating mark on the end of the drive pinion in line with the mating mark -B- on the companion flange.
  20.  
  21. Remove the drive pinion lock nut using tool KV38108300, or equivalent. Discard the lock nut. Do not reuse it.
  22.  
  23. Using the proper tool, remove the companion flange. Using tool KV381054S0 (J-34286) or equivalent, remove the front oil seal.
  24.  

To install:

  1. Installation is the reverse of the removal procedure.
  2.  
  3. Measure the drive pinion bearing preload with the resistance tool. Specification should be equal to the measurement taken during the removal procedure plus an additional 5 inch lb. If the specification is low, tighten the new drive pinion lock nut in 5 ft. lb increments until the drive pinion preload is met.
    NOTE
    Never loosen the drive pinion nut to decrease drive pinion bearing preload. Do not exceed specified preload. If preload torque is exceeded a new collapsible spacer must be installed. If maximum torque is reached prior to reaching the required preload, the collapsible spacer may have been damaged. Replace the collapsible spacer.

  4.  
  5. Drive pinion lock nut torque is 138-216 ft. lbs.
  6.  
  7. Continue the installation in the reverse order of the removal procedure.
  8.  

 
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