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.
Oil Check Valves And Oil Separator Overview
2009 Audi A6 BaseSECTION Oil Check Valves And Oil Separator Overview
WARNING: This page is about a different variant/trim than selected.
- O-ring
- Replace
- Oil Check Valve
- 20 Nm
- For oil supply to right cylinder head
- Gasket
- Replace
- Cover with Oil Separator
- With connection for crankshaft housing ventilation
- Removing and installing, refer to COVER WITH OIL SEPARATOR
- Bolt
- 9 Nm
- O-ring
- Replace
- 2 pieces
- Connecting Piece
- For crankcase ventilation
- Installed location, refer to Fig 2
- O-ring
- Replace
- 2 pieces
- Bolt
- 9 Nm
- Bolt
- 3 Nm
- Crankcase Ventilation Hose
- To the cylinder head covers
- O-rings
- Replace
- Hose for Crankcase Ventilation
- To the air guide pipe
- Hose Clamp
- Oil Check Valve
- 20 Nm
- For oil supply to left cylinder head
- O-ring
- Replace
-- Install the crankcase ventilation connector -1- with new O-rings into the oil separator cover:
- Installation position: The tab -2- must engage into the guide -arrow-.
RENDER: 1.0x
NO RELATED
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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.