Audi TT (2007 year). Manual - part 20

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.

❑ With drive spur gear for balance shaft assembly

3.2

Crankshaft dimensions

Honing di‐

mension

Main bearing journal ∅

mm

Conrod journal ∅

mm

Basic dimen‐

sion

54.00 –0.022

–0.042

50.90 –0.022

–0.042

3.3

Measuring axial clearance of crankshaft

Special tools and workshop equipment required
♦ Universal dial gauge bracket -VW 387-

♦ Dial gauge -VAS 6079-

Procedure
– Bolt dial gauge -VAS 6079- with universal dial gauge bracket

-VW 387- onto cylinder block (as shown in illustration) and set

it against crank web.

– Press crankshaft against dial gauge by hand.
– Set dial gauge to “0”.
– Push crankshaft away from dial gauge and read off value.
Axial clearance:
• New: 0.07 ... 0.17 mm.
• Wear limit: 0.37 mm

3.4

Measuring radial clearance of crank‐

shaft

Special tools and workshop equipment required
♦ Plastigage

3. Crankshaft    

71

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.

Procedure

Note

♦

Mark used bearing shells for re-installation (but do not mark

bearing surface).

♦

If bearing shells are worn down to nickel layer they must be

renewed.

– Remove bearing cap and clean bearing journal.
– Place a length of Plastigage corresponding to the width of the

bearing on the bearing journal or in the bearing shell.

• The Plastigage must be positioned in the centre of the bearing

shell.

– Fit bearing cap and tighten to 30 Nm. Do not rotate crankshaft.
– Remove bearing cap again.
– Compare width of Plastigage with measurement scale.
Radial clearance:
• New: 0.03 ... 0.08 mm.
• Wear limit: 0.17 mm.

3.5

Extracting and driving in needle bearing

for crankshaft

Note

Depending on the version of the gearbox, a needle bearing is fit‐

ted in the crankshaft ⇒  Electronic parts catalogue .

Special tools and workshop equipment required
♦ Drift -VW 207 C- or centring mandrel -3176-

72

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.

♦ -1- Internal puller Kukko 21/1

♦ -4- Counter-support Kukko 22/1
♦ Depth gauge -VAS 6082-

Pulling out
• Gearbox removed.
– Remove needle bearing using internal puller Kukko 21/1 and

counter-support Kukko 22/1.

Driving in
– Drive in needle bearing with drift -VW 207 C- or centring man‐

drel -3176- .

• Installation position: side with lettering faces outwards.

3. Crankshaft    

73

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.

• Installation depth of -a- = approx. 2 mm.

3.6

Pulling spur gear off crankshaft and

shrink-fitting new spur gear

♦ Hotplate (commercially available)

♦ Fitting tool -10 - 203-

♦ Puller -T10392-
♦ Thrust piece -T10392/1-
♦ Temperature gauge -VAS 6519-
– Remove sealing flange (pulley end) 

⇒ page 56

 .

– Remove sump 

⇒ page 139

 .

Note

If the balance shaft assembly does not have to be renewed, it is

sufficient just to remove the idler gear.

– Remove balance shaft assembly 

⇒ page 144

 .

74