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
Drive Pinion: Inspection
- Make sure that all component parts are free of scratches, holes and other faults.
- Check the tooth contact. Ref. to CONTINUOUSLY VARIABLE TRANSMISSION (TR690)>Drive Pinion>ADJUSTMENT .
- Apply differential gear oil to the taper roller bearing and rotate the bearing to check for noise or dragging, etc.
- Check the bearing preload of the drive pinion.CAUTION: Before measuring, apply differential gear oil to the roller part of taper roller bearing, and rotate it several times.
Starting torque:
14.3 - 46.4 N (1.5 - 4.7 kgf, 3.2 - 10.4 lbf)
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.