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
Front Reduction Drive Gear: Assembly
- Using the ST, install a new ball bearing to the front reduction drive gear.CAUTION:
- Be sure to apply CVTF to press-fitting surface of ball bearing.
- Use SUBARU genuine CVTF.
Preparation tool:
ST: INSTALLER (18651AA000)
- Using ST1 and ST2, install a new ball bearing to the front reduction drive gear.
Preparation tool:
ST1: INSTALLER (499757002)
ST2: INSTALLER (398177700)
- Install a new seal ring.CAUTION:
- Before installing seal rings, apply sufficient amount of CVTF to avoid damage and deformation.
- Use SUBARU genuine CVTF.
- When installing the seal rings, do not expand the seal rings too much.
Factory Service Tools
Use the Manual With the Right Hardware
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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.