Removing and installing cylinder head cover (right-side) - vehicles with one turbocharger — AUDI

🧭 Before you start

Fits: Audi A6/A7 C7 (4G, 2011–2018)

• Renewed: o-rings, crankcase breather hose

Don't miss

• Disregard (item 1).
• If the crankcase breather hose cannot be detached from the cylinder head cover without being damaged irreparably, detach it from the connection for the turbocharger only.
• Renew the bolts tightened with specified tightening angle.Fit new O-rings.Renew gasket for cylinder head cover if damaged.Renew crankcase breather hose if it was damaged irreparably during removal.
• Note the use-by date of the sealant.
• Cut off nozzle of tube at front marking (nozzle ∅ approx. 2 mm).

🔧 Engine codes this applies to

📐 1 workshop diagram for CDUC

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

📋 Procedure

1. Remove engine cover panel .
2. Remove injectors (right-side) .
3. Remove fuel rail (right-side) .
4. Unplug electrical connector (3) at Hall sender G40(item 2) and move clear wiring harness at cylinder head cover using removal lever80 - 200. [Note: Disregard (item 1).]
5. Take electrical connector (3) and pressure differential sender G505(item 2) out of bracket. [Note: Disregard (item 1).]

6. ⚠ Depending on the vehicle version and country version, a crankcase breather hose may be fitted which cannot be detached from the cylinder head cover without being damaged irreparably. For these versions, only detach the crankcase breather hose at the connection piece for the air intake hose. — Press release tabs and detach crankcase breather hose (1). [Note: If the crankcase breather hose cannot be detached from the cylinder head cover without being damaged irreparably, detach it from the connection for the turbocharger only.]
7. Unscrew bolts (arrows) and detach connection from turbocharger.
8. ⚠ Depending on the vehicle version and country version, a crankcase breather hose may be fitted which cannot be detached from the cylinder head cover without being damaged irreparably. For these versions, the hose on the cylinder head cover will be damaged irreparably and must then be renewed. — Remove crankcase breather hose (arrow); to do so, press release tabs (if present) or break hose connection at cylinder head cover as necessary.
9. Loosen bolts in the sequence (7 ... 1).
10. Remove bolts and take off cylinder head cover. [Note: Renew the bolts tightened with specified tightening angle.Fit new O-rings.Renew gasket for cylinder head cover if damaged.Renew crankcase breather hose if it was damaged irreparably during removal.]
11. Clean surfaces; they must be free of oil and grease. [Note: Note the use-by date of the sealant.]
12. Cut off nozzle of tube at front marking (nozzle ∅ approx. 2 mm).
13. Apply sealant bead (arrows) at each joint between cylinder head and timing chain cover (top).
14. Tighten cylinder head cover bolts .
15. Install injectors .
16. Install fuel rail (right-side) .
17. Check fuel system for leaks .

Other AUDI procedures

• Removing and installing timing chain cover (top right) – Audi
• Removing camshafts and re-installing used camshafts - cylinder bank 1 (right-side)
• Removing and installing catalytic converter - vehicles with two turbochargers
• Checking return flow rate of injectors with engine running
• Removing and installing timing chain covers (top) – Audi CDUC
• Removing and installing toothed belt – Audi · 56 torque figures
• 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