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

🧭 Before you start

Fits: Audi A6/A7 C7 (4G, 2011–2018)

• Renewed: crankcase breather hose

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• Disregard (item 3).
• Disregard (item 2).
• Renew the bolts tightened with specified tightening angle.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 (left-side) .
3. Remove fuel rail (left-side) .
4. Remove refrigerant line with internal heat exchanger Heating, air conditioning87Refrigerant circuit; Removing and installing refrigerant lines with internal heat exchanger.
5. Remove intake manifold flap motor V157.

6. If fitted, detach electrical connector (1) for exhaust gas temperature sender 3G495(item 2) from bracket and unplug connector. [Note: Disregard (item 3).]
7. Remove bolts (1) and detach bracket for intake manifold. [Note: Disregard (item 2).]
8. If fitted, unscrew bolt (1) for heat shield. [Note: Disregard (item 2).]
9. Using removal lever80 - 200, move clear electrical wiring harness at cylinder head cover.
10. ⚠ 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.
11. Loosen bolts in the sequence (7 ... 1).
12. Remove bolts and take off cylinder head cover. [Note: Renew the bolts tightened with specified tightening angle.Renew gasket for cylinder head cover if damaged.Renew crankcase breather hose if it was damaged irreparably during removal.]
13. Clean surfaces; they must be free of oil and grease. [Note: Note the use-by date of the sealant.]
14. Cut off nozzle of tube at front marking (nozzle ∅ approx. 2 mm).
15. Apply sealant bead (arrows) at each joint between cylinder head and timing chain cover (top).
16. Tighten cylinder head cover bolts .
17. Install intake manifold flap motor V157.
18. Install injectors .
19. Check fuel system for leaks .

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