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Assembly Inspection And Adjustment

WARNING: This page is about a different car, the 2018 Nissan Titan XD and 2018 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

Total Preload Torque 

  1. Install the differential side shaft and differential side flange.
    CAUTION: The differential side shaft and differential side flange must be installed in order to measure total preload torque.
  2. Rotate the drive pinion back and forth two to three times to check for unusual noise and rotation malfunction.
  3. Rotate the drive pinion at least 20 times to check for smooth operation of the bearings.
  4. Measure total preload torque using Tool (A).
    GNSDB124113Courtesy of NISSAN NORTH AMERICA, INC.

    Tool

    : ST3127S000 (J-25765-A)

    Total preload torque

    : Refer to Inspection and Adjustment .
    NOTE: Total preload torque = drive pinion bearing preload torque + Side bearing preload torque
    • If the measured value is out of the specification, check and adjust each part. Adjust the drive pinion bearing preload torque first, then adjust the side bearing preload torque.

      If the total preload torque is greater than specification

      -On drive pinion bearings:

      Replace the collapsible spacer.

      -On side bearings:

      Use thinner side bearing adjusting washers by the same amount to each side. For selecting adjusting washer refer to Inspection and Adjustment .

      If the total preload torque is less than specification

      -On drive pinion bearings:

      Tighten the drive pinion lock nut.

      -On side bearings:

      Use thicker side bearing adjusting washers by the same amount to each side. For selecting adjusting washer, refer to Inspection and Adjustment .

Tooth Contact 

  1. Apply red lead to the drive gear.
    G04076208Courtesy of NISSAN NORTH AMERICA, INC.
    NOTE: Apply red lead to both faces of all gears then check all gears.
  2. Rotate the drive gear back and forth several times. Then check for correct drive pinion to drive gear tooth contact as shown.
    G04076209Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION: Check tooth contact on drive side and reverse side.
  3. If the tooth contact is improperly adjusted, follow the procedure below to adjust the drive pinion height (dimension X).
    G04076232Courtesy of NISSAN NORTH AMERICA, INC.
    • If the tooth contact is near the face (face contact), or near the heel (heel contact), use a thicker drive pinion height adjusting washer to move drive pinion closer to the drive gear.
      G04076233Courtesy of NISSAN NORTH AMERICA, INC.

      Refer to Inspection and Adjustment .

    • If the tooth contact is near the flank (flank contact), or near the toe (toe contact), use a thinner drive pinion height adjusting washer to move the drive pinion farther from the drive gear.
      G04076234Courtesy of NISSAN NORTH AMERICA, INC.

      Refer to Inspection and Adjustment .

Backlash 

  1. Fit a dial indicator to the drive gear face to measure the backlash.
    G04076355Courtesy of NISSAN NORTH AMERICA, INC.
    NOTE: Gear carrier case is not magnetic. A magnetic gear carrier case holder can be used to mount dial indicator.

    Backlash:

    Refer to Inspection and Adjustment .
    • If the backlash is outside of the specification, change the thickness of the side bearing adjusting washers.

      If the backlash is greater than specification:

      Make drive gear back side adjusting washer thicker, and drive gear tooth side adjusting washer thinner by the same amount. For selecting adjusting washers, Refer to Inspection and Adjustment .

      If the backlash is less than specification:

      Make drive gear back side adjusting washer thinner, and drive gear tooth side adjusting washer thinner by the same amount. For selecting adjusting washers, Refer to Inspection and Adjustment .
      CAUTION: Do not change the total amount of washers as it will change the side bearing preload torque.

Companion Flange Runout 

  1. Rotate companion flange and check for runout on the companion flange face (inner side of the bolt holes) and companion flange inner side (socket diameter) using suitable tool.
    G04150160Courtesy of NISSAN NORTH AMERICA, INC.

    Runout limit

    Companion flange face:

    Refer to Inspection and Adjustment .

    Companion flange inner side:

    Refer to Inspection and Adjustment .
  2. If the runout is outside the runout limit, follow the procedure below to adjust.
    1. Rotate the companion flange on the drive pinion by 90°, 180° and 270° while checking for the position where the runout is minimum.
    2. If the runout is still outside of the runout limit after the companion flange has been rotated on the drive pinion, possible cause could be an assembly malfunction of drive pinion and drive pinion bearing or a malfunctioning drive pinion bearing.
    3. If the runout is still outside of the runout limit after repair of the assembly of drive pinion and drive pinion bearing or drive pinion bearing, replace the companion flange.
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