Audi Workshop Service and Repair Manuals

Crankshaft - exploded view

1 -	Crankshaft

q	Measuring axial clearance → Chapter

q	Measuring radial clearance → Chapter

q	Crankshaft dimensions → Chapter

2 -	Dowel sleeve

q

4x

q	Insert in cylinder block

3 -	Retaining frame

4 -

Bolt

q

Renew

q	Tightening torque and sequence → Fig.

5 -	Thrust washer

q	Only fitted on 3rd crankshaft bearing

q	Installation position: oil grooves face outwards

q	Note location

6 -	Bearing shell

q	For retaining frame (without oil groove)

q	Renew used bearing shells

q	Install new bearing shells for retaining frame with correct coloured markings → Fig.

7 -

Dowel pin

q	Check that pin is firmly seated in crankshaft

8 -	Thrust washer

q	Only fitted on 3rd crankshaft bearing

q	Installation position: oil grooves face outwards

9 -	Bearing shell

q	For cylinder block (with oil groove)

q	Renew used bearing shells

q	Install new bearing shells for the cylinder block with the correct coloured markings → Fig.

Retaining frame - tightening torque and sequence   Note Renew the bolts tightened with specified tightening angle. –  Insert two dowel sleeves in cylinder block. –  Tighten bolts in 3 stages in the sequence shown:

Stage	Bolts	Tightening torque/angle specification
1.	-1 … 16-	30 Nm
2.	-1 … 16-	50 Nm
3.	-1 … 16-	turn 180° further

Allocation of crankshaft bearing shells for cylinder block Bearing shells of the correct thickness are matched to the bearings in the cylinder block at the factory. Coloured dots on the bearing shells are used to identify the bearing shell thickness. l  -Arrow-: Pulley end. The allocation of the bearing shells to the cylinder block is identified by a code letter next to the relevant bearing.

Letter on cylinder block		Colour coding of bearing
R	=	Red
G	=	Yellow
B	=	Blue

Allocation of crankshaft bearing shells for retaining frame Bearing shells of the correct thickness are matched to the bearings in the retaining frame at the factory. Coloured dots on the side of the bearing shells are used to identify the bearing shell thickness. The allocation of the bearing shells to the bearing positions in the retaining frame is indicated by a sequence of letters on the flywheel flange on the crankshaft. The first letter in the sequence stands for bearing „1“, the second letter for bearing „2“, etc.

Letter on crankshaft		Colour coding of bearing
R	=	Red
G	=	Yellow
B	=	Blue

Position of dowel sleeves –  Check that dowel sleeves -1 ... 4- are inserted in retaining frame at positions shown in illustration. l  -Arrow-: Pulley end.