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Home >> Subaru >> 2015 >> WRX Limited, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (Manual Transaxle & Differential (TY75) (W/O STI)) >> Differential Side Retainer Oil Seal >> Replacement

Differential Side Retainer Oil Seal: Replacement

WARNING: This page is about a different variant/trim than selected.
  1. Disconnect the ground cable from battery. <Ref. to BATTERY , NOTE, Note.>
  2. Lift up the vehicle.
  3. Using the TORX® bit T70, remove the drain plug, and drain the transmission gear oil completely.
    CAUTION:
    • Immediately after the vehicle has been running or after idling for a long time, the transmission gear oil will be hot. Be careful not to receive burns.
    • Be careful not to spill the transmission gear oil on the exhaust pipe, to prevent emission of smoke or causing a fire. If gear oil is spilled, wipe it off completely.
  4. Tighten the drain plug using TORX® bit T70.
    NOTE: Use a new gasket.

    Tightening torque: 

    44 N.m (4.5 kgf-m, 32.5 ft-lb) (aluminum gasket, silver) 

    70 N.m (7.1 kgf-m, 51.6 ft-lb) (copper gasket, brown) 

    70 N.m (7.1 kgf-m, 51.6 ft-lb) (metal gasket, black) 

    Fig 1: Identifying Drain Plug
    G05332645Courtesy of SUBARU OF AMERICA, INC.
  5. Remove the center exhaust pipe (rear). <Ref. to REMOVAL , Center Exhaust Pipe.>
  6. Remove the stabilizer link.
    Fig 2: Locating Stabilizer Link Nuts
    G10268621Courtesy of SUBARU OF AMERICA, INC.
  7. Remove the bolt securing the ball joint of the front arm to the housing, then separate the front arms and the housing.
    Fig 3: Separating Front Arms And Housing
    G10268622Courtesy of SUBARU OF AMERICA, INC.
  8. Using a crowbar, separate the left and right front drive shafts.
    Fig 4: Separating Left/Right Front Drive Shafts
    G08318895Courtesy of SUBARU OF AMERICA, INC.
  9. Remove the differential side retainer oil seal.
    NOTE:
    • Be sure to replace the differential side retainer oil seal whenever the front drive shaft is removed from the transmission.
    • Use the ST 398527700 PULLER ASSY to remove the oil seal. If removing the oil seal with a flat tip screwdriver, be careful not to scratch the differential side retainer.
  10. Using the ST, install the differential side retainer oil seal by lightly tapping with a plastic hammer.
    CAUTION:
    • Apply transmission gear oil to the oil seal lips, and install the oil seal while being careful not to deform the lip.
    • Check the identification marks (L, R) during installation not to mix up the oil seals RH and LH.
    NOTE: Use a new oil seal.

    ST 18675AA000 DIFFERENTIAL SIDE OIL SEAL INSTALLER

    Fig 5: Installing Differential Side Oil Seal
    G05002972Courtesy of SUBARU OF AMERICA, INC.
  11. Install the ST to the transmission, and then install the front drive shaft.

    ST 28399SA010 OIL SEAL PROTECTOR

    Fig 6: Installing Front Drive Shaft
    G08318906Courtesy of SUBARU OF AMERICA, INC.
  12. Insert the front arm ball joint and tighten the mounting bolt.

    Tightening torque: 

    50 N.m (5.1 kgf-m, 36.9 ft-lb) 

    Fig 7: Inserting Front Arm Ball Joint
    G10268633Courtesy of SUBARU OF AMERICA, INC.
  13. Install the stabilizer link.

    Tightening torque: 

    60 N.m (6.1 kgf-m, 44.3 ft-lb) 

    Fig 8: Locating Stabilizer Link Nuts
    G10268621Courtesy of SUBARU OF AMERICA, INC.
  14. Install the center exhaust pipe (rear). <Ref. to INSTALLATION , Center Exhaust Pipe.>
  15. Lower the vehicle.
  16. Pour in transmission gear oil and check the oil level. <Ref. to TRANSMISSION GEAR OIL .>
  17. Connect the battery ground terminal. <Ref. to BATTERY , NOTE, Note.>
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