Removing and installing non-return valve with vacuum hose in plenum chamber — AUDI
Removing and installing non-return valve with vacuum hose in plenum chamber on Audi: 10 steps. What to remove, in what order, and what to check after.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi A6/A7 C7 (4G, 2011–2018); platform code 4X
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- Risk of damage to vacuum hosesDisconnect vacuum hoses carefully. Damaged vacuum hoses must be renewed. — Pull vacuum hose (arrow) off plenum chamber partition panel.
- To facilitate installation, moisten the vacuum hose with water, but not with oil.
📋 Procedure
- Disconnect earth wire from battery terminal Electrical system27Disconnecting and connecting battery.
- Remove body brace Running gear, axles, steering40Suspension strut, upper links; Removing and installing body brace.
- Release catch (arrow A) and open cover (arrow B).
- Unscrew nuts (2, 3, 4) and move electrical wires clear.
- Remove electrical connector (1) from bracket and unplug connector.
- Unscrew bolts (arrows), detach terminal 30 wiring junction 2TV22 from plenum chamber partition panel and move to one side.
- ⚠ Risk of damage to vacuum hosesDisconnect vacuum hoses carefully. Damaged vacuum hoses must be renewed. — Pull vacuum hose (arrow) off plenum chamber partition panel.
- If fitted, unplug electrical connector (1).
- Remove non-return valve with vacuum hose (2) (pull it off brake servo). [Note: To facilitate installation, moisten the vacuum hose with water, but not with oil.]
- Observe steps required after connecting battery Electrical system27Battery; Disconnecting and connecting battery.
Other AUDI procedures
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- Removing engine – Audi A8 D3 · 41 torque figures
- Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
- Installing engine – Audi A8 D4 · 36 torque figures
- Removing and installing camshaft timing chain · 29 torque figures
- Removing and installing drive chain for balance shaft
- Removing and installing coolant pipes (left-side) – Audi
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- Removing and installing rear seat backrest – Audi A3
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Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.