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Home >> Infiniti >> 2010 >> M45 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 138 (Rear Final Drive) >> Rear Final Drive Assembly >> Disassembly and Assembly >> Assembly >> Differential Assembly

Differential Assembly

WARNING: This page is about a different car, the 2008 Infiniti M45 and 2008 Infiniti M35. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install side gear thrust washers with the same thickness as the ones installed prior to disassembly or reinstall the old ones on the side gears.
    Fig 1: Checking Side Gear Thrust Washers
    G04876378Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Install side gears and thrust washers into differential case.
    CAUTION: Make sure that the circular clip is installed to side gears.
  3. Align 2 pinion mate gears in diagonally opposite positions, then rotate and install them into differential case after installing thrust washer to pinion mate gear.
    Fig 2: Identifying Pinion Mate Gears Into Differential Case
    G04876379Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Align the lock pin holes on differential case with shaft, and install pinion mate shaft.
  5. Measure side gear end play. If necessary, select the appropriate side gear thrust washers. Refer to "DIFFERENTIAL SIDE GEAR CLEARANCE ".
    Fig 3: Aligning Lock Pin Holes On Differential Case With Shaft
    G04876380Courtesy of NISSAN MOTOR CO., U.S.A.
  6. Drive a lock pin into pinion mate shaft, using a punch. Make sure lock pin is flush with differential case.
    CAUTION: Do not reuse lock pin.
    Fig 4: Driving Lock Pin Into Pinion Mate Shaft
    G04876381Courtesy of NISSAN MOTOR CO., U.S.A.
  7. Align the matching mark of differential case with the mark of drive gear, then place drive gear.
    Fig 5: Aligning Matching Mark Of Differential Case
    G04876382Courtesy of NISSAN MOTOR CO., U.S.A.
  8. Apply thread locking sealant into the thread hole of drive gear.
    • Use Genuine High Strength Thread Locking Sealant or equivalent.  Refer to "RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS ".
      CAUTION: Drive gear back and threaded holes shall be cleaned and degreased sufficiently.
      Fig 6: Applying Thread Locking Sealant Into Thread Hole Of Drive Gear
      G04876383Courtesy of NISSAN MOTOR CO., U.S.A.
  9. Install drive gear on the mounting bolts, and then tighten to the specified torque. Refer to "COMPONENTS ".
    CAUTION:
    • Tighten bolts in a crisscross fashion.
    • After tightening the bolts to the specified torque, tighten the bolts additionally by turning the bolts 31 to 36 degrees.
      Fig 7: Identifying Drive Gear Bolts Tightening Sequence
      G04876384Courtesy of NISSAN MOTOR CO., U.S.A.
  10. Press side bearing inner races to differential case, using the drift and the base.

    Tool number A: KV38100300 (J-25523) 

    B: ST33061000 (J-8107-2) 

    CAUTION: Do not reuse side bearing inner race.
    Fig 8: Pressing Side Bearing Inner Races Into Differential Case
    G04876385Courtesy of NISSAN MOTOR CO., U.S.A.
  11. Install differential case assembly with side bearing outer races into gear carrier.
  12. Measure side bearing preload. If necessary, select the appropriate side bearing adjusting washers. Refer to "SIDE BEARING PRELOAD ".
    Fig 9: Identifying Correct Bearing Races
    G04876340Courtesy of NISSAN MOTOR CO., U.S.A.
  13. Insert selected left and right side bearing adjusting washers in place between side bearings and gear carrier.
    Fig 10: Placing Side Bearing Adjusting Washers Between Side Bearings And Gear Carrier
    G04876355Courtesy of NISSAN MOTOR CO., U.S.A.
  14. Align matching marks on bearing cap with that on gear carrier.
  15. Install bearing caps and tighten bearing cap mounting bolts to the specified torque. Refer to "COMPONENTS ".
    Fig 11: Aligning Matching Mark On Gear Carrier
    G04876337Courtesy of NISSAN MOTOR CO., U.S.A.
  16. Using the drift, drive side oil seals until it becomes flush with the case end.

    Tool number : KV38100200 (J-26233) 

    CAUTION:
    • Do not reuse oil seal.
    • When installing, do not incline oil seal.
    • Apply multi-purpose grease onto oil seal lips, and gear oil onto the circumference of oil seal.
      Fig 12: Tapping Drive Side Oil Seals
      G04876389Courtesy of NISSAN MOTOR CO., U.S.A.
  17. Check and adjust drive gear runout, tooth contact, drive gear to drive pinion backlash, and total preload torque. Refer to "DRIVE GEAR RUNOUT ", "TOOTH CONTACT ", "BACKLASH ", "TOTAL PRELOAD TORQUE ".

    Recheck above items. Readjust the above description, if necessary.

  18. Apply sealant to mating surface of rear cover.
    CAUTION: Remove old sealant adhering to mounting surfaces. Also remove any moisture, oil, or foreign material adhering to application and mounting surfaces.
    Fig 13: Applying Sealant To Mating Surface Of Rear Cover
    G04876390Courtesy of NISSAN MOTOR CO., U.S.A.
  19. Install rear cover on gear carrier and tighten mounting bolts with the specified torque. Refer to "COMPONENTS ".
  20. Install side flange with the following procedure.
    1. Attach the protector to side oil seal.

      Tool number : KV38107900 (J-39352) 

    2. After the side flange is inserted and the serrated part of side gear has engaged the serrated part of flange, remove the protector.
      Fig 14: Attaching Special Tool To Side Oil Seal
      G04876299Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Put a suitable drift on the center of side flange, then drive it until sound changes.
      NOTE: When installation is completed, driving sound of the side flange turns into a sound which seems to affect the whole final drive.
    4. Confirm that the dimension of the side flange installation (Measurement A) in the figure comes into the following.

      Measurement A: 326 - 328 mm (12.83 - 12.91 in) 

      Fig 15: Identifying Side Gear Serration Part
      G05225590Courtesy of NISSAN MOTOR CO., U.S.A.
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