Audi TT (2007 year). Manual — part 27
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
-arrows-.
– Press release tabs and disconnect crankcase breather hose
-1- from cylinder head cover.
Note
Ignore items marked -2- and -arrows-.
– Remove bolts -arrows- and detach fuel rail from cylinder head
cover.
– Slacken cylinder head cover bolts in the sequence -7 ... 1-.
– Remove bolts and take off cylinder head cover.
Installing
Installation is carried out in the reverse order; note the following:
Note
♦
Renew gasket for cylinder head cover if damaged.
♦
Renew bolts for cylinder head cover if seals on bolts are dam‐
aged.
– Tighten cylinder head cover bolts
2. Cylinder head
99
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
– Make sure that cylinder head cover is clipped properly to
toothed belt cover.
Note
For illustration purposes, the installation position is shown with
the camshaft sprocket removed.
– Use screwdriver to press clips -arrows- on toothed belt cover
onto cylinder head cover until they engage with a click.
– Make sure there is a clearance between hub and toothed belt
cover.
2.3
Cylinder head - exploded view
1 - Cylinder head
❑ Removing and installing
❑ After removal, the cylin‐
der head must not be
put down on the gasket
side with the glow plugs
still installed, because
the glow plugs project
slightly beyond the gas‐
ket surface
❑ Checking for distortion
❑ Must not be machined
❑ If renewed, change
coolant and engine oil
2 - Washer
3 - Bolt
❑ Renew
❑ Correct sequence when
❑ Tightening torque and
sequence
4 - Centre hex stud
❑ Renew
❑ 20 Nm + 90°
5 - Engine lifting eye
6 - Gasket
❑ Renew
7 - Exhauster pump
❑ Removing and installing
8 - Bolt
100
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
9 - Connection
10 - Bolts
❑ Tightening torque
11 - Gasket
❑ Renew
12 - Bolts
❑ Renew
❑ 20 Nm + 90°
13 - Engine lifting eye
14 - Cylinder head gasket
❑ Renewing
⇒ “2.4 Removing and installing cylinder head”, page 102
❑ If renewed, change coolant and engine oil
15 - Hall sender -G40-
❑ For camshaft position
16 - Bolt
❑ Apply locking fluid when installing; refer to ⇒ Electronic parts catalogue
❑ 10 Nm
Checking cylinder head for distortion
– Use straight edge and feeler gauge to measure cylinder head
for distortion at several points.
• Max. permissible distortion: 0.1 mm.
Note
Cylinder heads must not be reworked on TDI engines.
Identification of cylinder head gasket
1 - Part number
2 - Holes
3 - Ignore
Note
♦
Cylinder head gaskets of different thicknesses are fitted de‐
pending on the amount of piston projection
.
♦
When renewing only the cylinder head gasket, the new gasket
should have the same identification as the old one.
2. Cylinder head
101
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Cylinder head - tightening torque and sequence
– Renew cylinder head bolts.
– Tighten bolts in the sequence -1 ... 10- in 4 stages as follows:
1.
Tighten to 30 Nm.
2.
Tighten to 50 Nm.
3.
Turn 90° further.
4.
Turn 90° further.
2.4
Removing and installing cylinder head
Special tools and workshop equipment required
♦ Removal lever -80 - 200-
♦ Guide pins -3070- with -3070/9-
♦ Counterhold tool -T10051-
102
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