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Home >> Infiniti >> 2009 >> M45 Base >> Repair and Diagnosis (Single Page) >> Drivelines & Axles >> Differentials & Drive Axles >> Front Final Drive >> Service Information >> Front Final Drive Assembly >> Disassembly and Assembly >> Assembly >> Differential Assembly

Differential Assembly

  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: Installing Side Gear Thrust Washers
    G04876378Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Install side gears and thrust washers into differential case.
    CAUTION:
    • Never reuse circular clip.
    • Make sure that the circular clip is installed to side gear (side retainer side).
  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: Installing Side Gears And Thrust Washers 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: Installing Pinion Mate 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: Never 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 drive gear with the mark of differential case, then place drive gear.
    Fig 5: Identifying Matching Mark Of Drive Gear And Differential Case
    G04876382Courtesy of NISSAN MOTOR CO., U.S.A.
  8. Apply thread locking sealant into the thread hole of drive gear.
    • Use Genuine Medium 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 "DISASSEMBLY AND ASSEMBLY ".
    CAUTION: Tighten bolts in a crisscross fashion.
    Fig 7: Installing Drive Gear Bolts
    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: ST33230000 (J-25805-01) 

    B: ST33061000 (J-8107-2) 

    Fig 8: Pressing Side Bearing Inner Races To Differential Case Using Drift And Base
    G05225538Courtesy of NISSAN MOTOR CO., U.S.A.
    CAUTION: Never reuse side bearing inner race.
  11. Press-fit side bearing outer race into side retainer with the drift and the drift bar.

    Tool number A: ST30611000 (J-25742-1) 

    B: KV31103000 (J-38982) 

    Fig 9: Installing Side Bearing Outer Race Into Side Retainer
    G05225513Courtesy of NISSAN MOTOR CO., U.S.A.
    CAUTION:
    • At first, using a hammer, tap bearing outer race until it becomes flat to side retainer.
    • Never reuse side bearing outer race.
  12. Press-fit side bearing outer race into gear carrier with the drift and the drift bar.

    Tool number A: ST30611000 (J-25742-1) 

    B: KV31103000 (J-38982) 

    Fig 10: Position Of Fitting Side Bearing Outer Race Into Gear Carrier
    G05225514Courtesy of NISSAN MOTOR CO., U.S.A.
    CAUTION:
    • At first, using a hammer, tap bearing outer race until it becomes flat to gear carrier.
    • Never reuse side bearing outer race.
  13. Place the differential case assembly into gear carrier.
  14. Measure side bearing preload. If necessary, select the appropriate side bearing adjusting shim. Refer to "SIDE BEARING PRELOAD ".
    Fig 11: Identifying Differential Case Assembly
    G05225496Courtesy of NISSAN MOTOR CO., U.S.A.
  15. Install selected side bearing adjusting shim (1).
  16. Apply multi-purpose grease to O-ring (2), and install it to side retainer.
    CAUTION: Never reuse O-ring.
  17. Install side retainer assembly to gear carrier.
    Fig 12: Installing Side Bearing Adjusting Shim
    G05225542Courtesy of NISSAN MOTOR CO., U.S.A.
  18. Install side retainer mounting bolts to the specified torque. Refer to "DISASSEMBLY AND ASSEMBLY ".
    Fig 13: Locating Side Retainer Mounting Bolts
    G05225517Courtesy of NISSAN MOTOR CO., U.S.A.
  19. Using the drift, press-fit side oil seal so that its surface comes face to face with the end surface of the side retainer.

    Tool number A: ST33400001 (J-26082) 

    CAUTION:
    • Never reuse oil seal.
    • When installing, never incline oil seal.
    • Apply multi-purpose grease onto oil seal lips, and gear oil onto the circumference of oil seal.
      Fig 14: Installing Side Oil Seal
      G05225469Courtesy of NISSAN MOTOR CO., U.S.A.
  20. Using the drift, press-fit side oil seal so that its surface comes face to face with the end surface of gear carrier.

    Tool number A: KV38102100 (J-25803-01) 

    Fig 15: Installing Side Oil Seal
    G05225470Courtesy of NISSAN MOTOR CO., U.S.A.
    CAUTION:
    • Never reuse oil seal.
    • When installing, never incline oil seal.
    • Apply multi-purpose grease onto oil seal lips, and gear oil onto the circumference of oil seal.
  21. Apply multi-purpose grease to O-ring, and install it to gear carrier.
    CAUTION: Never reuse O-ring.
  22. 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.
  23. Apply sealant to mating surface of carrier cover.
    • Use Genuine Silicone RTV or equivalent. Refer to  "Recommended Chemical Product And Sealant ".
      CAUTION: Remove old sealant adhering to mounting surfaces. Also remove any moisture, oil, or foreign material adhering to application and mounting surfaces.
      Fig 16: Identifying Sealant Applying Area On Mating Surface Of Carrier Cover
      G05225546Courtesy of NISSAN MOTOR CO., U.S.A.
  24. Install carrier cover on gear carrier and tighten mounting bolts with the specified torque. Refer to "DISASSEMBLY AND ASSEMBLY ".
    Fig 17: Locating Carrier Cover Mounting Bolts
    G05225547Courtesy of NISSAN MOTOR CO., U.S.A.
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