Audi TT (2007 year). Manual - part 13

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.

13 – Crankshaft group

1

Cylinder block (pulley end)

1.1

Poly V-belt drive with tensioner and air conditioner compressor - exploded

view

1 - Poly V-belt

❑ Check for wear
❑ Before removing, mark

direction of rotation with

chalk or felt-tip pen

❑ Removing and installing

⇒ page 44

❑ Do not kink
❑ When installing, make

sure it is properly seated

on pulleys.

2 - Poly V-belt tensioner

❑ Removing and installing

⇒ page 47

3 - Vibration damper

❑ With poly V-belt pulley
❑ Installation position:

hole in vibration damper

must be positioned over

raised section of crank‐

shaft sprocket

❑ Removing and installing

⇒ page 49

4 - Bolt

❑ Renew
❑ Use only genuine bolts

⇒  Electronic parts cata‐

logue

❑ 10 Nm + 90°

5 - Bolt

❑ Tightening torque ⇒ 

6 - Dowel sleeve

❑ Ensure correct seating in bracket for ancillaries

7 - Bolt

8 - Bolt

❑ Tightening torque 

⇒ Item 20 (page 85)

9 - Idler roller

❑ For toothed belt

10 - Bolt

❑ Tightening torque 

⇒ Item 6 (page 84)

1. Cylinder block (pulley end)    

43

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.

11 - Idler roller

❑ For toothed belt

12 - Bracket for ancillaries

❑ Removing and installing 

⇒ page 50

13 - High-pressure pump

14 - Bolt

❑ 23 Nm

15 - Bolt

❑ Tightening torque and sequence 

⇒ page 44

16 - Alternator

17 - Bolt

18 - Air conditioner compressor

19 - Bolt

20 - Dowel sleeve

❑ Ensure correct seating in bracket for ancillaries

Bracket for ancillaries - tightening torque and tightening sequence
– Renew bolts for bracket for ancillaries and fit as follows:
♦ Bolts -1- and -2- M10x52.
♦ Bolts -3- and -6- M10x30.
♦ Bolts -4- and -5- M10x60.
– Tighten bolts for bracket for ancillaries in the sequence

-1 ... 6- in 4 stages as follows:

1.

Screw in all bolts by hand until they make contact.

2.

Tighten all bolts to 40 Nm.

3.

Turn bolts -3- and -6- 45° further.

4.

Turn bolts -1, 2, 4, 5- 90° further.

1.2

Removing and installing poly V-belt - ve‐

hicles with tensioner and air conditioner

compressor

Special tools and workshop equipment required

44

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.

♦ Locking pin -T10060 A-

Removing
– Release fasteners -1 ... 4- and remove centre noise insulation.

– Release fasteners -arrows- and remove right wheel housing

liner (bottom section).

1. Cylinder block (pulley end)    

45

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.

Caution

If a used belt runs in the opposite direction when it is refitted,

this can cause breakage.

♦ Before removing, mark direction of rotation of poly V-belt

with chalk or felt-tipped pen for re-installation.

– To slacken poly V-belt turn tensioner in clockwise direction

-arrow-.

– Lock tensioner with locking pin -T10060 A-
– Take off poly V-belt.
Installing
Installation is carried out in the reverse order; note the following:

Note

Before fitting poly V-belt, make sure all mechanical units (e.g. al‐

ternator and air conditioner compressor) are firmly in position.

– Fit poly V-belt on all poly V-belt pulleys:
1 - Crankshaft
2 - Tensioner
3 - Alternator
4 - Air conditioner compressor

– Hold tensioner with ring spanner and remove locking pin -

T10060 A- .

– Slacken tensioner.
– Check that poly V-belt is properly seated.
– Start engine and check that belt runs properly.
– Install right wheel housing liner (bottom section) and noise in‐

46