Audi TT (2007 year). Manual — part 26
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.
• Pointer -2- on tensioner roller must be centred between tabs
-1- and -3- on base plate.
Note
The maximum permissible sideways deviation from the specified
position is 5 mm.
♦ Re-adjust valve timing if requirements are not met
♦ If requirements are met, continue with procedure after adjust‐
ing valve timing correctly as described below
Re-adjusting valve timing:
– If camshaft hub cannot be locked, withdraw crankshaft stop -
T10050- until pin is clear of bore.
– Turn crankshaft in opposite direction of engine rotation slightly
past “TDC”.
– Now turn crankshaft slowly in direction of engine rotation until
it is possible to lock camshaft hub.
– Loosen bolts for camshaft sprocket after locking hub.
A - If pin of crankshaft stop -T10050- is on left side of bore:
– Then turn the crankshaft in direction of engine rotation until the
pin -arrow- on the crankshaft stop engages in the sealing
flange as the crankshaft rotates.
– Tighten camshaft sprocket bolts to 20 Nm.
B - If pin of crankshaft stop -T10050- is on right side of bore:
– Turn crankshaft slightly in opposite direction to engine rota‐
tion.
– Turn crankshaft in direction of engine rotation again until pin
of crankshaft stop engages in sealing flange as crankshaft ro‐
tates.
– Tighten camshaft sprocket bolts to 20 Nm.
Procedure after adjusting valve timing correctly:
– Remove diesel injection pump locking pin -3359- and crank‐
shaft stop -T10050- .
– Turn crankshaft two rotations in direction of engine rotation by
turning bolt for crankshaft sprocket until crankshaft is just be‐
fore “TDC”.
– Check valve timing once again
.
1. Toothed belt drive
95
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.
– If camshaft hub can now be locked, tighten camshaft sprocket
.
– Tighten bolts -2- for high-pressure pump sprocket to final tor‐
– Check valve timing once again
Assembling
Installation is carried out in the reverse order; note the following:
Note
♦
Renew seals and/or gaskets.
♦
Secure all hose connections with the correct type of hose clips
(same as original equipment) ⇒ Electronic parts catalogue .
.
66 .
– Install coolant pipe (right-side)
96
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.
2
Cylinder head
Note
Audi TT models with a TDI engine (2.0 ltr. 4-valve common rail)
are always equipped with steel glow plugs.
2.1
Cylinder head cover - exploded view
1 - Bolts
❑ 5 Nm
2 - Fuel rail
❑ Observe rules for clean‐
❑ Do not attempt to bend
high-pressure pipes to a
different shape
❑ Installing high-pressure
3 - Bolt
❑ Tightening torque ⇒
4 - Injector
❑ Observe rules for clean‐
❑ Removing and installing
5 - Bolt
❑ Tightening torque ⇒
6 - Cover for injector
7 - Bush for fuel rail
❑ Renew if damaged or
leaking
8 - Nut
❑ Tightening torque ⇒
9 - Clamping piece
10 - Cable guide
11 - Cylinder head cover
12 - Gasket
❑ Renew if damaged or leaking
13 - Bolt
❑ Renew if seal is damaged
❑ Tightening torque and sequence
14 - Sealing cap
15 - Heat shield
2. Cylinder head
97
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 cover - tightening torque and sequence
– Tighten bolts for cylinder head cover in the sequence -1 ... 7-
to 9 Nm.
2.2
Removing and installing cylinder head
cover
Removing
– Remove engine cover panel -arrows-.
– Unplug electrical connector -2- on exhaust gas pressure sen‐
sor 1 -G450- .
Note
Ignore items marked -1- and -arrows-.
– Unfasten clips -arrows- and press toothed belt cover (top) to
right side.
98
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