Extension Case Oil Seal: Replacement

WARNING: This page is about a different car, the 2003 Subaru Outback, 2003 Subaru Legacy, and 2003 Subaru Baja. However, it is still accessible from the selected car via links, so may be relevant.

Clean the transmission exterior.
Drain the ATF completely.
Replace the gasket with a new one, and then tighten the ATF drain plug.
1. Tightening torque: 25 N.m (2.5 kgf-m, 18.1 ft-lb)
  
  Fig 1: Tightening ATF Drain Plug
  Courtesy of SUBARU OF AMERICA, INC.
Remove the rear exhaust pipe and muffler.
2.5 L model
1. < Ref. to REMOVAL , Rear Exhaust Pipe> and < Ref. to REMOVAL , Muffler.>
3.0 L model
1. < Ref. to REMOVAL , Rear Exhaust Pipe> and <Ref. to REMOVAL , Muffler.>
Remove the heat shield cover.
Remove the propeller shaft.
Using the ST, remove the oil seal.
1. ST 398527700 PULLER ASSY
Using the ST, install the oil seal.
1. ST 498057300 INSTALLER
Install the propeller shaft.
Install the heat shield cover.
Install the rear exhaust pipe and muffler.
2.5 L model
1. < Ref. to INSTALLATION , Rear Exhaust Pipe> and < Ref. to INSTALLATION , Muffler.>
3.0 L model
1. < Ref. to INSTALLATION , Rear Exhaust Pipe> and < Ref. to INSTALLATION , Muffler.>
Pour ATF and check the ATF level. < Ref. to AUTOMATIC TRANSMISSION FLUID .>