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Differential Case Assembly

  1. Install the washer, differential bevel gear and differential bevel pinion in the differential case (RH). Insert the pinion shaft.
  2. Install straight pin from reverse direction.
    Fig 1: Identifying Straight Pin
    G00936376Courtesy of SUBARU OF AMERICA, INC.
  3. Install the washer and differential bevel gear to the differential case (LH). Then put the case over the differential case (RH), and connect both cases.
  4. Install the hypoid driven gear and secure by tightening the bolt.
    1. Standard tightening torque: 62 N.m (6.3 kgf-m, 45.6 ft-lb) 
    Fig 2: Identifying Hypoid Driven Gear
    G00936377Courtesy of SUBARU OF AMERICA, INC.
  5. Measurement of backlash (Selection of washer)
    1. Measure the gear backlash with ST1 and ST2, and insert ST2 through the access window of the case.
      1. ST1 498247001 MAGNET BASE
      2. ST2 498247100 DIAL GAUGE
      NOTE:
      • Measure the backlash by applying a differential bevel pinion tooth between two differential bevel gear teeth.
      • Fix differential bevel pinion gear in place with a screwdriver or similar tool when measuring.
      1. Standard value: 0.13 - 0.18 mm (0.0051 - 0.0071 in) 
      Fig 3: Measuring Backlash By Applying A Differential Bevel Pinion Tooth Between Two Differential Bevel Gear Teeth
      G00936378Courtesy of SUBARU OF AMERICA, INC.
    2. If backlash is not as specified, select a washer from the table below.
      Fig 4: Washer Thickness Table
      G00936379Courtesy of SUBARU OF AMERICA, INC.
  6. Using ST, install taper roller bearing.
    1. ST 398487700 INSTALLER
    Fig 5: Identifying Taper Roller Bearing
    G00936380Courtesy of SUBARU OF AMERICA, INC.