Mp-T Model

Take out the transfer clutch assembly by lightly tapping the end of rear drive shaft with a plastic hammer.
NOTE: Be careful not to damage the oil seal of the extension.

Fig 1: Tapping End Of Rear Drive Shaft With Plastic Hammer
Courtesy of SUBARU OF AMERICA, INC.
Remove the transfer clutch pipe while being careful not to deform the pipe.

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