Section 7 (Manual Transaxle & Differential (TY85) (WRX-STI)): General Description: Caution

WARNING: This page is about a different variant/trim than selected.

Remove contamination including dirt and corrosion before removal, installation or disassembly.
Keep the disassembled parts in order and protect them from dust and dirt.
Before removal, installation or disassembly, be sure to clarify the failure. Avoid unnecessary removal, installation, disassembly and replacement.
When disassembling the case and other light alloy parts, disassemble by using a plastic hammer. Do not pry apart with screwdrivers or other tools.
Vehicle components are extremely hot after driving. Be wary of receiving bums from heated parts.
Use SUBARU genuine transmission gear oil, grease or equivalent. Do not mix transmission gear oil, grease etc. of different grades or manufacturers.
Be sure to tighten fasteners including bolts and nuts to the specified torque.
Place shop jacks or rigid racks at the specified points.
Apply transmission gear oil onto sliding or revolving surfaces before installation.
Always replace deformed or damaged snap rings.
Before installing O-rings or oil seals, apply sufficient amount of transmission gear oil to avoid damage and deformation.
Be careful not to incorrectly install or fail to install O-rings, snap rings and other such parts.
Before securing a part on a vise, place cushioning materials such as wood blocks, aluminum plates, or waste cloth between the part and the vise.
Avoid damaging the mating surface of the case.
Before applying liquid gasket, completely remove and clean the old liquid gasket.
Be careful of handling the oil seal, O-ring and gasket. If the contact surface of them is damaged, oil leakage may occur.
When pressing-in the oil seal, make sure that the oil seal lip portion and outer surface are not damaged or tilted.
When replacing the taper roller bearing, replace the outer race and inner race as a set.
When replacing the hypoid gear, replace the ring gear and pinion gear as a set.
Replace the bolts if the seating surface or the thread surface is excessively rusted.