Extension Case: Disassembly

Hit the extension case lightly with a plastic hammer, and take out the transfer clutch.
NOTE: Be careful not to damage the oil seal of the extension case.

Fig 1: Tapping Extension Case With Plastic Hammer
Courtesy of SUBARU OF AMERICA, INC.
Remove the transfer clutch pipe from the extension case.
NOTE: Be careful not to deform the transfer clutch pipe.

Fig 2: Transfer Clutch Pipe And Extension Case
Courtesy of SUBARU OF AMERICA, INC.
Remove the dust cover from extension case.
Remove the oil seal from the extension case.