Head gasket identification holes (AAT)
![](https://www.audimanual.ru/img/a6/1351.jpg)
Mounting pins (AAT)
![](https://www.audimanual.ru/img/a6/1352.jpg)
Withdrawal
1. Disconnect the negative battery cable.
![](https://www.audimanual.ru/img/a6/1353.jpg)
2. Remove plastic covers.
![](https://www.audimanual.ru/img/a6/1354.jpg)
3. Unscrew the nuts.
![](https://www.audimanual.ru/img/a6/1355.jpg)
4. Remove the cover.
5. Drain the engine oil and coolant.
6. Disconnect all hoses from the head.
7. Remove the auxiliary drive belt.
8. Remove the timing belt tensioner and camshaft sprocket.
![](https://www.audimanual.ru/img/a6/1356.jpg)
9. Unscrew the short bolts.
![](https://www.audimanual.ru/img/a6/1357.jpg)
10. Unscrew the long bolts.
![](https://www.audimanual.ru/img/a6/1358.jpg)
11. Remove the timing belt cover.
12. Remove the camshaft cover and fuel pump drive belt.
13. Disconnect fuel pipes from injectors.
![](https://www.audimanual.ru/img/a6/1359.jpg)
14. Disconnect all wires from the head that prevent its removal.
![](https://www.audimanual.ru/img/a6/1360.jpg)
15. Remove the turbocharger, disconnect the exhaust pipe from the turbocharger.
16. Disconnect the exhaust pipe from the exhaust manifold.
![](https://www.audimanual.ru/img/a6/1361.jpg)
17. Remove the intake and exhaust manifolds.
![](https://www.audimanual.ru/img/a6/1362.jpg)
18. Unscrew the bolts.
![](https://www.audimanual.ru/img/a6/1363.jpg)
19. Disconnect the ventilation hoses.
![](https://www.audimanual.ru/img/a6/1364.jpg)
20. Remove the brake vacuum pump.
![](https://www.audimanual.ru/img/a6/1365.jpg)
21. Remove the piston from the cylinder head (AAT).
![](https://www.audimanual.ru/img/a6/1366.jpg)
22. Remove the sealing ring.
![](https://www.audimanual.ru/img/a6/1367.jpg)
23. Remove head bolts in reverse tightening sequence (see fig. Cylinder head bolt tightening sequence).
![](https://www.audimanual.ru/img/a6/1368.jpg)
24. Remove head (AAT).
25. Remove the head gasket.
Examination
1. In order not to damage the fuel pump belt tensioner and the coolant hose fitting, it is recommended to remove them from the head.
![](https://www.audimanual.ru/img/a6/1369.jpg)
2. Remove the tensioner (AAT).
![](https://www.audimanual.ru/img/a6/1370.jpg)
3. Unscrew the bolts.
![](https://www.audimanual.ru/img/a6/1371.jpg)
4. Remove the pipe (AAT).
5. Thoroughly clean all surfaces and openings of the head elements.
Label on the top of the gasket (AAT)
![](https://www.audimanual.ru/img/a6/1372.jpg)
Cylinder head bolt tightening sequence
![](https://www.audimanual.ru/img/a6/1373.jpg)
Installation
Head installation is carried out in the reverse order of removal, while remembering to install a new head gasket and replace the old bolts.
![](https://www.audimanual.ru/img/a6/1374.jpg)
1. Install a new head gasket (AAT).
![](https://www.audimanual.ru/img/a6/1375.jpg)
2. After installing the head, remove the mounting pins.
![](https://www.audimanual.ru/img/a6/1376.jpg)
3. Tighten the bolts to the required tightening torque.
![](https://www.audimanual.ru/img/a6/1377.jpg)
4. Tighten the bolts to the required angle.
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