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 Ascent BaseFACTORY OEM SERVICE PROCEDURE
Oil Pump Chain: Removal
- Remove the transmission body. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Transmission Assembly>REMOVAL .
- Remove the torque converter. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Torque Converter>REMOVAL .
- Remove the oil pump chain cover.
- 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.
- Remove the snap ring.
- Remove the drive sprocket.
- Remove the oil seal from the oil pump chain cover.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.