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Differential Side Retainer Oil Seal: Replacement

  1. Remove the collector cover.
  2. Lift up the vehicle.
  3. Remove the front under cover. Ref. to REMOVAL , Front Under Cover.
  4. Using the TORX® bit T70, remove the oil drain plug, and drain the transmission gear oil completely.
    Fig 1: Identifying Drain Plug
    G05332645Courtesy of SUBARU OF AMERICA, INC.
  5. Tighten the oil 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 2: Identifying Drain Plug
    G05332645Courtesy of SUBARU OF AMERICA, INC.
  6. Remove the center exhaust pipe, (non-turbo model) Ref. to REMOVAL , Center Exhaust Pipe.
  7. Remove the center exhaust pipe, (turbo model) Ref. to REMOVAL , Center Exhaust Pipe.
  8. Separate the front drive shaft from the transmission. Ref. to REMOVAL , Front Drive Shaft.
  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.
    NOTE:
    • 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 seal RH and LH.

    ST 18675AA000 DIFFERENTIAL SIDE OIL SEAL INSTALLER

    Fig 3: Identifying ST Differential Side Oil Seal Installer (18675AA000)
    G05002972Courtesy of SUBARU OF AMERICA, INC.
  11. Install the front drive shaft. Ref. to INSTALLATION , Front Drive Shaft.
  12. Install the center exhaust pipe, (non-turbo model) Ref. to INSTALLATION , Center Exhaust Pipe.
  13. Install the center exhaust pipe, (turbo model) Ref. to INSTALLATION , Center Exhaust Pipe.
  14. Install the front under cover. Ref. to INSTALLATION , Front Under Cover.
  15. Lower the vehicle.
  16. Add the transmission gear oil through the oil level gauge hole. Ref. to TRANSMISSION GEAR OIL .
  17. Install the collector cover.
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