Audi TT (2007 year). Manual - part 24

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.

– Remove front right wheel.
– Release fasteners -1 ... 4- and remove centre noise insulation.

– Only on TT Roadster: Remove noise insulation frame

– Unplug electrical connector -2- on exhaust gas pressure sen‐

sor 1 -G450- .

Note

Ignore items marked -1- and -arrows-.

– Disengage fuel hose -3- at bracket.
– Pull off bracket for fuel lines towards right -arrow- and move

clear to one side.

– Unplug electrical connector -1- at supplementary fuel pump -

V393- .

– Remove bolts -2- and -4-, detach bracket with supplementary

fuel pump -V393- and move clear to one side.

1. Toothed belt drive    

87

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.

– Loosen bolt -1-.
– Remove nut -2- and bolt -3-.
– Detach hose retainer -arrow- from fuel filter and move fuel filter

-8- clear to one side with fuel hoses -4 ... 7- connected.

– Unplug electrical connector -3- at radiator outlet coolant tem‐

perature sender -G83- .

– Remove nut -1- and bolt -2-.
– Move coolant pipe (right-side) -arrows- to side (coolant hoses

remain connected).

– Release retaining clips -arrows- and detach cover (top) for

toothed belt.

– Release fasteners -arrows- and remove right wheel housing

liner (bottom section).

– Remove vibration damper 

⇒ page 49

 .

Note

The poly V-belt tensioner does not have to be locked.

88

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.

– Remove bolts -arrows-.
– Detach toothed belt cover (bottom and centre).

Caution

Irreparable damage can be caused if the toothed belt slips.

♦ Turn crankshaft only in direction of engine rotation.

– Rotate crankshaft by turning bolt on crankshaft sprocket until

camshaft sprocket is positioned at “TDC”.

• The toothed segment -arrow- must face upwards.
– Lock camshaft hub with diesel injection pump locking pin

-3359- .

Note

♦

Camshaft sprocket is shown in illustration with toothed belt

removed.

♦

Disregard -item 1-.

– Lock crankshaft sprocket in position with crankshaft stop -

T10050- .

• The markings on the sprocket -2- and the crankshaft stop -1-

must align -arrow-. The pin of the crankshaft stop must engage

in the aperture in the sealing flange.

Note

The crankshaft stop can only be pushed onto the sprocket from

the front face of the teeth.

1. Toothed belt drive    

89

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.

– Slacken bolts -1- for camshaft sprocket approx. 90°.

Note

Disregard -arrow-.

– Remove bolt -1- for coolant pipe.
– Using bit XZN 10 -T10385- , loosen bolts -2- for high-pressure

pump sprocket approx. 90°.

– Loosen nut -1- for tensioning roller.
– Turn eccentric adjuster of tensioning roller with special

wrench, long reach -T10264- anti-clockwise -arrow- until ten‐

sioning roller can be secured with locking tool -T10265- .

90