Crankshaft Assembly Overview

Crankshaft Assembly 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 Assembly Stand ] Engine, Securing to Assembly Stand.





1 Cylinder Block

• Checking cylinder bore, refer to --> [ Cylinder Bore, Checking ] Testing and Inspection.

• If the cylinder block is being replaced, then the bearing shells must be reallocated. Refer to --> [ Crankshaft Bearing Shell Allocation ] Crankshaft Bearing Shell Allocation.

• Piston and cylinder dimensions, refer to --> [ Piston and Cylinder Dimensions ] Piston and Cylinder Dimensions.

2 Bearing Shell, Cylinder Block

• With lubricating groove.

• Do not interchange used bearing shells (mark).

• Allocation of the crankshaft bearing shells. Refer to --> [ Crankshaft Bearing Shell Allocation ] Crankshaft Bearing Shell Allocation.

3 Crankshaft

• After removal, lay aside so that sensor wheel is not rested on and become damaged.

• If the crankshaft is being replaced, then the bearing shells must be reallocated to the bearing cover. Refer to --> [ Crankshaft Bearing Shell Allocation ] Crankshaft Bearing Shell Allocation.

• Crankshaft bearing cap tightening sequence. Refer to --> [ Crankshaft Bearing Cap, Tightening Sequence ].

• Crankshaft needle bearing replacing. Refer to --> [ Crankshaft Needle Bearing, with DSG Transmission Only ] Crankshaft Needle Bearing, with DSG Transmission Only.

• Checking axial play, refer to --> [ Crankshaft, Checking Axial Play ] Crankshaft, Checking Axial Play.

• Checking radial play, refer to --> [ Crankshaft, Checking Radial Play ] Crankshaft, Checking Radial Play.

• Do not turn the crankshaft when measuring radial play.

• Crankshaft dimensions, refer to --> [ Crankshaft Dimensions ] Specifications.

4 Bearing Shell, Crankshaft Bearing Cap

• Without lubricating groove.

• Do not interchange used bearing shells (mark).

• Allocation of the crankshaft bearing shells. Refer to --> [ Crankshaft Bearing Shell Allocation ] Crankshaft Bearing Shell Allocation.

5 Bolt

• Always replace.

• Tightening sequence, refer to --> [ Crankshaft Bearing Cap, Tightening Sequence ].

6 Bearing Cap

• Bearing cap 1: Belt pulley side.

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

7 Screw, 10 Nm + 1/4 turn (90°)

• 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 (RPM) sensor.

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

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

9 Thrust Washers

• For bearing 3.

10 Bolt

• Always replace.

• Tightening sequence, refer to --> [ Crankshaft Bearing Cap, Tightening Sequence ].

Crankshaft Bearing Cap, Tightening Sequence





- Tighten the crankshaft bearing cap bolts in sequence - 1 through 10 -:

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

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

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

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

5. Tighten the bolts - arrows - an additional 90°.