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
Transmission Case: Disassembly
- Remove all plugs from the transmission case.
- Remove the lubrication pipe.
- Remove the oil seal using a flat tip screwdriver wrapped with cloth, etc.
- Remove the ball bearing on the reduction driven gear side using ST.
Preparation tool:
ST: PULLER ASSY (398527700)
- Remove the snap ring on the primary pulley side.
- Using the ST, remove the roller bearing on the primary pulley side.NOTE: Warm up the bearing area of transmission case using a drier or heat gun.
Preparation tool:
ST: PULLER ASSY (398527700)
- Remove the snap ring on the secondary pulley side.
- Using the ST, remove the roller bearing on the secondary pulley side.NOTE: Warm up the bearing area of transmission case using a drier or heat gun.
Preparation tool:
ST: PULLER ASSY (398527700)
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.