Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Subaru Outback BaseFACTORY OEM SERVICE PROCEDURE
Extension Case: Removal
- Remove the transmission body. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>TRANSMISSION ASSEMBLY>REMOVAL .
- Remove the electric oil pump. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>ELECTRIC FLUID PUMP>REMOVAL .
- Remove the clip (A) and disconnect the ground terminal (B).
- Remove the bolts securing the extension case and transmission hanger (A).
- Using a plastic hammer and a crowbar wrapped with protection tape or similar, expand the clearance and remove the extension case.CAUTION: Be careful not to damage the oil seal of the extension case.
- Remove the transfer drive gear shim and transfer driven gear shim.
- Remove the O-rings.
- Remove the seal rings.
- Remove the liquid gasket from the extension case and the transmission case.
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.