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Home >> Infiniti >> 2008 >> G35 x >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Front Final Drive (M205)) >> Disassembly And Assembly >> Front Final Drive >> Disassembly and Assembly >> Assembly >> Differential Assembly

Differential Assembly

WARNING: This page is about a different car, the 2008 Infiniti QX56. 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: Identifying Side Gear Thrust Washers
    G04876378Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Install the side gears and side gear thrust washers into the differential case.
  3. Install the pinion mate thrust washers to the two pinion mate gears. Then install the pinion mate gears with the pinion mate thrust washers by aligning them in diagonally opposite positions and rotating them into the differential case.
    Fig 2: Identifying Pinion Mate Gears Into Differential Case
    G04876379Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Install the pinion mate shaft and align the lock pin hole on the pinion mate shaft with the lock pin hole on the differential case.
    Fig 3: Aligning Lock Pin Holes On Differential Case With Shaft
    G04876380Courtesy of NISSAN MOTOR CO., U.S.A.
  5. Measure the side gear end play. If necessary, select the appropriate side gear thrust washers. Refer to " "INSPECTION AND ADJUSTMENT ".
  6. Drive a new lock pin into the pinion mate shaft until it is flush with the differential case using suitable tool.
    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 the differential case with the mark of the drive gear, then place the drive gear onto the differential case.
    Fig 5: Aligning Matching Mark Of Differential Case
    G04876382Courtesy of NISSAN MOTOR CO., U.S.A.
  8. Install and tighten the new drive gear bolts to the specified torque. Refer to "DISASSEMBLY AND ASSEMBLY ".
    CAUTION:
    • Make sure the drive gear back and threaded holes are clean.
    • Do not reuse drive gear bolts.
    • Tighten new drive gear bolts in a crisscross pattern.
      Fig 6: Identifying Drive Gear Bolts
      G04901888Courtesy of NISSAN MOTOR CO., U.S.A.
  9. Press the new side bearing inner races to the differential case using Tools.

    Tool number 

    A: KV38100300 (J-25523) 

    B: ST33081000 

    CAUTION: Do not reuse side bearing inner races.
    Fig 7: Pressing Side Bearing Inner Races To Differential Case
    G04876385Courtesy of NISSAN MOTOR CO., U.S.A.
  10. Install side bearing adjusters into gear carrier.
  11. Apply differential gear oil to the side bearings, and install the differential case assembly with the side bearing outer races into the gear carrier.
    CAUTION: Do not reuse side bearing outer race when replacing side bearing inner race (replace as a set).
    Fig 8: Installing Differential Case Assembly With Side Bearing Outer Races Into Gear Carrier
    G04876340Courtesy of NISSAN MOTOR CO., U.S.A.
  12. Install the side bearing caps with the matching marks aligned.
    NOTE: Do not tighten at this step. This allows further tightening of side bearing adjusters.
    Fig 9: Identifying Matching Marks
    G04901855Courtesy of NISSAN MOTOR CO., U.S.A.
  13. Tighten each side bearing adjuster alternately turning drive gear.
    Fig 10: Tightening Side Bearing Adjuster
    G04901892Courtesy of NISSAN MOTOR CO., U.S.A.
  14. Check and adjust tooth contact, backlash, drive gear runout and total preload torque. Refer to "INSPECTION AND ADJUSTMENT ".

    Recheck above items.

    • After adjusting tooth contact and backlash secure side bearing adjuster with screws and tighten side bearing cap bolt to the specified torque. Refer to "DISASSEMBLY AND ASSEMBLY ".
      Fig 11: Checking Adjust Tooth Contact, Backlash, Drive Gear Runout
      G04901893Courtesy of NISSAN MOTOR CO., U.S.A.
  15. Apply multi-purpose grease to the lips of the new side oil seal. Then drive the new side oil seal in evenly to the gear carrier using suitable tool.
    CAUTION:
    • Do not reuse side oil seal.
    • Do not incline the new side oil seal when installing.
    • Apply multi-purpose grease to the lips of the new side oil seal.
  16. Install the extension tube with a new O-ring.
    CAUTION:
    • Do not reuse O-ring.
    • If the extension tube is being replaced, install a new axle shaft bearing.
      Fig 12: Extension Tube With New O-Ring With Torque Specification
      G04901851Courtesy of NISSAN MOTOR CO., U.S.A.
  17. Apply 3 mm (0.12 in) bead of sealant to the mating surface of the carrier cover as shown.
    • Use Genuine Silicone RTV or equivalent. Refer to "RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS ".
      CAUTION: Remove any old sealant adhering to the mating surfaces. Also remove any moisture, oil, or foreign material adhering to the application and mating surfaces.
      Fig 13: Applying Bead Of Sealant To Mating Surface Of Carrier Cover
      G04901895Courtesy of NISSAN MOTOR CO., U.S.A.
  18. Install the carrier cover to the gear carrier. Tighten the bolts to the specified torque. Refer to "DISASSEMBLY AND ASSEMBLY ".
  19. Install side shaft and side flange.
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