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Differential Side Retainer Oil Seal: Replacement

  1. Remove the front tires. Ref. to WHEEL AND TIRE SYSTEM>TIRE AND WHEEL>REMOVAL
  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 gear oil will be hot. Be careful not to receive burns. 
    • Be careful not to spill the 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. Replace the gasket with a new part and install the drain plug using the TORX® bit T70.

    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)

    G10322885Courtesy of SUBARU OF AMERICA, INC.
  5. Remove the crossmember support - rear.
    G11256105Courtesy of SUBARU OF AMERICA, INC.
  6. Remove the center exhaust pipe (rear). Ref. to EXHAUST (H4DOTC)>CENTER EXHAUST PIPE>REMOVAL>CENTER EXHAUST PIPE (REAR)
    NOTE:

    Perform this procedure only when removing the LH side. 

  7. Remove the brake hose bracket. Ref. to FRONT SUSPENSION>FRONT STRUT>REMOVAL
    NOTE:

    Remove only the brake hose bracket. 

  8. Disconnect the arm assembly front.
    1. Remove the bolt and nut from the front axle housing.
    2. Lower the arm assembly front, and remove the ball stud from the front axle housing.
      CAUTION:

      Be careful not to damage the boot of the ball joint. 

      G14601732Courtesy of SUBARU OF AMERICA, INC.
  9. Using a crowbar, separate the front drive shaft.
    G08318895Courtesy of SUBARU OF AMERICA, INC.
  10. Remove the differential side retainer oil seal using the ST (PULLER ASSY).
    CAUTION:

    If removing the oil seal with a flat tip screwdriver, be careful not to scratch the differential side retainer. 

  11. Using the ST, install a new 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. 

    Preparation tool: 

    ST: DIFFERENTIAL SIDE OIL SEAL INSTALLER (18675AA000)

    G10322906Courtesy of SUBARU OF AMERICA, INC.
  12. Set the ST (OIL SEAL PROTECTOR) to the differential side retainer.
  13. Replace the circlip of the front drive shaft with a new part.
  14. Install the front drive shaft and remove ST.

    Preparation tool: 

    ST: OIL SEAL PROTECTOR (28399SA010)

    G08318906Courtesy of SUBARU OF AMERICA, INC.
  15. Connect the arm assembly front.
    CAUTION:
    • Always use a new flange bolt and a new flange nut. 
    • While holding the bolt side, tighten the nut to the specified torque. 
    • Be careful not to damage the boot of the ball joint. 

    Tightening torque: 

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

    G14611671Courtesy of SUBARU OF AMERICA, INC.
  16. Install the brake hose bracket. Ref. to FRONT SUSPENSION>FRONT STRUT>INSTALLATION
  17. Install the center exhaust pipe (rear). Ref. to EXHAUST (H4DOTC)>CENTER EXHAUST PIPE>INSTALLATION>CENTER EXHAUST PIPE (REAR)
  18. Install the crossmember support - rear.

    Tightening torque: 

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

    G11256105Courtesy of SUBARU OF AMERICA, INC.
  19. Lower the vehicle.
  20. Pour in transmission gear oil and check the oil level. Ref. to MANUAL TRANSMISSION AND DIFFERENTIAL (TY75)>TRANSMISSION GEAR OIL 
  21. Install the front tires. Ref. to WHEEL AND TIRE SYSTEM>TIRE AND WHEEL>INSTALLATION
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