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 Forester BaseFACTORY OEM SERVICE PROCEDURE
Oil Pump Chain: Removal
- Remove the transmission body. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Transmission Assembly>REMOVAL .
- Remove the torque converter. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR580)>Torque Converter>REMOVAL .
- Remove the oil pump chain, oil pump sprocket, driven sprocket and oil pump chain cover.NOTE: Oil pump chain cover may be hard to remove because the driven sprocket is installed to the shaft side of the oil pump. In this case, remove it while holding the driven sprocket by hand.
- Remove the seal rings.
- Remove the driven sprocket from oil pump chain cover to remove the oil pump chain.NOTE:
- The driven sprocket is a non-disassembly part.
- If the ball bearing is removed from the driven sprocket, replace it with a new part.
- Remove the snap ring.
- Remove the drive sprocket.
- Remove the oil seal.
- Remove the liquid gasket from the oil pump chain cover and the converter 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.