Extension Case Oil Seal: Replacement

Lift up the vehicle.
Clean the transmission exterior.
Remove the drain plug (ATF) to drain the ATF.
CAUTION: Because the AFT will be very hot after driving, be very careful not be receive burns.
Perform replacement with a new gasket, and tighten the drain plug (ATF).
Tightening torque:

25 N.m (2.5 kgf-m, 18.4 ft-lb)

Fig 1: Identifying Drain Plug (ATF) And Oil Pan
Courtesy of SUBARU OF AMERICA, INC.
Remove the rear exhaust pipe and muffler.
- Non-turbo model
  Refer to REMOVAL , Rear Exhaust Pipe. Refer to REMOVAL , Muffler.
- Turbo model
Refer to REMOVAL , Rear Exhaust Pipe. Refer to REMOVAL , Muffler.
Remove the heat shield cover.

Fig 2: Identifying Heat Shield Cover
Courtesy of SUBARU OF AMERICA, INC.
Remove the propeller shaft. Refer to REMOVAL , Propeller Shaft.
Using the ST, remove the oil seal.
ST 398527700 PULLER ASSY
Using the ST, install the oil seal.
ST 498057300 INSTALLER
Install the propeller shaft. Refer to INSTALLATION , Propeller Shaft.
Install the heat shield cover.

Fig 3: Identifying Heat Shield Cover
Courtesy of SUBARU OF AMERICA, INC.
Install the rear exhaust pipe and muffler.
- Non-turbo model
  Refer to INSTALLATION , Rear Exhaust Pipe. Refer to INSTALLATION , Muffler.
- Turbo model
Refer to INSTALLATION , Rear Exhaust Pipe. Refer to INSTALLATION , Muffler.
Fill with ATF. Refer to AUTOMATIC TRANSMISSION FLUID .
Bleed the air of control valve.
Refer to AIR BLEEDING OF CONTROL VALVE .
Check the level and leaks of the ATF. Refer to AUTOMATIC TRANSMISSION FLUID .