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 Outback BaseFACTORY OEM SERVICE PROCEDURE
Drive Pinion: Disassembly
- Flatten the tab of the lock nut.
- Using ST1, ST2 and ST3, fix the drive pinion and remove the lock nut.
Preparation tool:
ST1: ADAPTER (499787500)
ST2: WRENCH (499787700)
ST3: HOLDER (498937110)
- Remove the drive pinion.
- Remove the taper roller bearing (rear) inner race and the plug using a press and an attachment suitable for the press.
- Remove the drive pinion washer and drive pinion spacer.
- Remove the O-rings.
- Using the ST and a press, remove the taper roller bearing (front) inner race and the drive pinion shim.
Preparation tool:
ST: REMOVER (498515500)
- Using the ST, remove the taper roller bearing (front) outer race and the taper roller bearing (rear) outer race.
Preparation tool:
ST: PULLER ASSY (398527700)
- Using the ST, remove the oil seal on the front side and the oil seal on the rear side.CAUTION: Be careful not to damage the fitting surface of oil seal.
Preparation tool:
ST: PULLER ASSY (398527700)
- Remove the plug.
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.