Removing and installing timing chain cover (top) - vehicles with engine codes CNSB, CNTC, CHHB — AUDI

🧭 Before you start

Fits: Audi A3 (8V, 2012–2020); platform code 85

• Renewed: seals

Don't miss

• Disregard (item 2).
• Make sure sealant residue does not enter lubrication system.Place a clean cloth over the exposed section of the cylinder head. — Remove sealant residue on bearing saddle.
• Note the use-by date of the sealant.
• Cut off nozzle of tube at front marking (nozzle ∅ approx. 1.5 mm).
• The timing chain cover (top) must be installed within 5 minutes of applying the sealant.

🔧 Engine codes this applies to

📋 Procedure

1. Open filler cap (arrow) on coolant expansion tank briefly to relieve residual pressure in cooling system.
2. Remove engine cover panel .
3. Release hose clip (1), disconnect coolant hose and push towards right.
4. Disconnect hose (2) for activated charcoal filter (press release tab on hose) and move hose clear.
5. Detach connector (1) from camshaft control valve 1N205.

6. Unscrew bolts (arrows) and remove camshaft control valve 1N205(item 2).
7. Remove bolt (1) for dipstick guide tube.
8. Unclip guide tube for oil dipstick from timing chain cover (top) (arrow). [Note: Disregard (item 2).]
9. Unscrew bolts (1 to 6) and remove timing chain cover (top).
10. Remove bolts (3, 5) if necessary. [Note: Renew seals.]
11. ⚠ Make sure sealant residue does not enter lubrication system.Place a clean cloth over the exposed section of the cylinder head. — Remove sealant residue on bearing saddle.
12. Clean surfaces; they must be free of oil and grease. [Note: Note the use-by date of the sealant.]
13. Cut off nozzle of tube at front marking (nozzle ∅ approx. 1.5 mm).
14. ⚠ Make sure lubrication system is not clogged by excess sealant.The bead of sealant must not be thicker than specified. — Apply beads of sealant (arrow) onto clean oil seal, as shown in illustration. [Note: The timing chain cover (top) must be installed within 5 minutes of applying the sealant.]
15. Install timing chain cover (top); tightening sequence .
16. Install camshaft control valve 1 N205.
17. Install engine cover panel .

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