ON Charge Pipe: Removal

Remove the intercooler. (Turbo model) Refer to REMOVAL , Intercooler.
Remove the air intake chamber. (Non-turbo model) Refer to REMOVAL , Air Intake Chamber.
Remove the oil charge pipe, and then remove the O-ring from flange side.

Fig 1: Identifying ATF Level Gauge And Oil Charge Pipe
Courtesy of SUBARU OF AMERICA, INC.