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Differential Case ASSY

  1. Install the washer and differential bevel gear into the differential case (RH).
    Fig 1: Identifying Differential Bevel Gear
    G08318146Courtesy of SUBARU OF AMERICA, INC.
  2. Install the differential bevel pinions into differential case (RH) and install the pinion shaft.
    Fig 2: Identifying Pinion Shaft, Differential Bevel Gear And Pinion
    G08579039Courtesy of SUBARU OF AMERICA, INC.
  3. Install the straight pin.
    Fig 3: Locating Straight Pin
    G08318148Courtesy of SUBARU OF AMERICA, INC.
  4. Install the washer and differential bevel gear to the differential case (LH).
    Fig 4: Identifying Differential Bevel Gear
    G08318146Courtesy of SUBARU OF AMERICA, INC.
  5. Install the differential case (RH) to the hypoid driven gear.
    Fig 5: Identifying Differential Case (RH) And Hypoid Driven Gear
    G08318150Courtesy of SUBARU OF AMERICA, INC.
  6. Install the differential case (LH) to the differential case (RH).
  7. Using the ST, install the hypoid driven gear by tightening the installation bolt.

    ST 18270KA020 SOCKET (E20)

    Tightening torque: 

    64 N.m (6.5 kgf-m, 47.2 ft-lb) 

    Fig 6: Installing Hypoid Driven Gear Using Special Tool
    G08318151Courtesy of SUBARU OF AMERICA, INC.
  8. Measure the backlash, and select the washer.
    1. Install the SUBARU genuine axle shaft to differential case.

      Part No. 38415AA070 Axle shaft

    2. Using ST1 and ST2, insert the ST2 through the window of differential case. Measure the backlash of the gear.
      NOTE:
      • Measure the backlash by applying a differential bevel pinion tooth between two differential bevel gear teeth.
      • When measuring, fix the differential bevel pinion gear in place with a screwdriver covered with cloth, or a similar tool.

      ST1 498247001 MAGNET BASE

      ST2 498247100 DIAL GAUGE

      Specification: 

      0.13 - 0.18 mm (0.0051 - 0.0071 in) 

      Fig 7: Measuring Gear Backlash Using Special Tools
      G08318152Courtesy of SUBARU OF AMERICA, INC.
    3. If the backlash is not within specification, select a washer from the table below and replace.
      Washer
      Part No. Thickness mm (in)
      803038021 0.95 (0.037)
      803038022 1.00 (0.039)
      803038023 1.05 (0.041)
  9. Using the ST, install the left and right taper roller bearings.

    ST1 499277100 BUSHING 1-2 INSTALLER

    ST2 398497701 SEAT

    Fig 8: Installing Taper Roller Bearings Using Special Tools
    G08318153Courtesy of SUBARU OF AMERICA, INC.