Crankshaft Overview

Crankshaft Overview

• Secure the engine to the assembly stand using the engine and transmission holder (VAS 6095) when performing repair work. Refer to => [ Engine, Securing to ] Procedures.






1 Cylinder Block

• If the cylinder block is being replaced, then the bearing shells must be allocated again. Refer to => [ Crankshaft Bearing Shell, Allocating ] Service and Repair.

2 Bearing Shell, for the Cylinder Block

• With a lubricating groove.

• Do not interchange used bearing shells (mark them).

• Crankshaft bearing shell, allocating. Refer to => [ Crankshaft Bearing Shell, Allocating ] Service and Repair.

3 Crankshaft

• After removal, place it in such a way it does not rest on the sensor wheel - item 8 - and damage it

• If the crankshaft is being replaced, then the bearing shells must be allocated to the bearing cap. Refer to => [ Crankshaft Bearing Shell, Allocating ] Service and Repair.

• Axial clearance measuring, refer to => [ Crankshaft Axial Play, Measuring ] Crankshaft Axial Play, Measuring.

• Radial clearance measuring, refer to => [ Crankshaft Radial Play, Measuring ] Crankshaft Radial Play, Measuring.

• Do not rotate the crankshaft when measuring the radial play.

• Crankshaft dimensions, refer to => [ Crankshaft Dimensions ] [1][2]Crankshaft, Engine.

• Removing and installing, refer to => [ Sensor Wheel ] Service and Repair.

4 Bearing Shell

• Without a lubricating groove.

• Do not interchange used bearing shells (mark them).

• Crankshaft bearing shell, allocating. Refer to => [ Crankshaft Bearing Shell, Allocating ] Service and Repair.

5 Bolt

• Always replace.

• Observe the tightening sequence, refer to => [ Crankshaft Bearing Cap Bolt Tightening Sequence ].

6 Bearing Cap

• Bearing cap 1: Belt pulley side.

• Retaining tabs on the bearing shells and cylinder block/bearing caps must align above one another.

7 Screw

• 10 Nm + 90° (1/4) additional turn.

• Always replace.

• Replace the sensor wheel every time the bolts are loosened. Refer to => [ Sensor Wheel ] Service and Repair.

8 Sensor Wheel

• For the engine speed sensor (G28).

• Only possible to install in one position - Bores are offset.

• Replace the sensor wheel every time the bolts - item 7 - are loosened.

• Removing and installing, refer to => [ Sensor Wheel ] Service and Repair.

9 Thrust washers

• For bearing 3.

10 Bolt

• Always replace.

• Observe the tightening sequence, refer to => [ Crankshaft Bearing Cap Bolt Tightening Sequence ].

Crankshaft Bearing Cap Bolt Tightening Sequence





- Tighten the crankshaft bearing cap bolts in sequence - 1 through 5 -:

1. Tighten the bolts - 1 through 10 - and the - arrows - by hand.

2. Tighten the bolts - 1 through 10 - to 65 Nm.

3. Tighten the bolts - 1 through 10 - an additional 90° using a ratchet.

4. Tighten the bolts - arrows - to 20 Nm.

5. Tighten the bolts - arrows - an additional 90° using a ratchet.