Cylinder Head, Removing and Installing Audi TT 8N

Note. Replace cylinder head bolts. On assembly, replace self-locking nuts and bolts that are tightened by turning through to a specified angle, as well as oil seals and gaskets. When installing an exchange cylinder head, the contact surfaces between supporting elements, roller rocker fingers and cams must be oiled before installing the head. The plastic protectors fitted to protect the open valves must only be removed immediately before installing the cylinder head. When installing a new cylinder head or cylinder head gasket, drain all of the old coolant and refill with new coolant.

Scheme 146

1 - Cylinder head gasket

1. Metal gasket
2. Replace
3. After replacing, fill with new coolant

2 - Cylinder head

1. Removing. Refer to «Cylinder head, removing»(ref-276269-S11337558382008010300000)
2. Checking for distortion. Refer to «Checking cylinder head for distortion»(ref-276269-S27711739342008021500000)
3. Installing. Refer to «Cylinder head, installing»(ref-276269-S42260374582008010300000)
4. After replacing, fill with new coolant

3 - Lifting eye

4 - 23 Nm

5 - Cylinder head cover gasket

1. Replace if damaged

6 - Cylinder head cover

1. Removing and installing. Refer to «Cylinder head cover, removing and installing»(ref-276269-S10542814972008010300000)

7 - Spacing sleeve

1. With seal
2. Replace seal if damaged

8 - 10 Nm

9 - Filler cap

10 - Filler cap seal

1. Replace if damaged

11 - Rubber buffer

1. Replace if damaged

12 - Ignition coil

1. Use puller for ignition coil T10095 A for removal

13 - 10 Nm

1. Bolt with spacer sleeve and seal
2. Replace seal if damaged

14 - 10 Nm

15 - 10 Nm

16 - Wire harness retainer

17 - Cylinder head bolt

1. Replace
2. Note sequence when loosening. Refer to «Cylinder head, removing»(ref-276269-S11337558382008010300000)
3. Note sequence when tightening. Refer to «Cylinder head, installing»(ref-276269-S42260374582008010300000)

18 - Lifting eye

19 - 23 Nm

20 - 10 Nm

21 - Combination valve for secondary air injection system

1. Removing and installing. Refer to «Combination valve for secondary air system, removing and installing»(ref-276269-S39915998252008010300000)

Scheme 147

1. Use a straight edge and feeler gauge to measure for distortion at several points.

1. Max. permissible distortion: 0.05 mm