Crankshaft: Description and Operation

Crankshaft Overview





1 Crankshaft

• Measuring axial play, refer to => [ Crankshaft Axial Clearance, Checking ] Crankshaft Axial Clearance, Checking.

• Measuring radial clearance, refer to => [ Crankshaft Radial Clearance, Checking ] Crankshaft Radial Clearance, Checking.

• Do not rotate the crankshaft when measuring radial play.

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

2 Alignment Bushing

• Quantity: 2

• Install into the cylinder block.

3 Guide Frame

• Installing.

4 Bolt

• Replace

• Tightening sequence.

5 Thrust Washer

• Only on the 3rd crankshaft bearing.

• Lubricating grooves face outward.

• Observe the locating point.

• Measuring crankshaft axial clearance, refer to => [ Crankshaft Axial Clearance, Checking ] Crankshaft Axial Clearance, Checking.

6 Bearing Shell

• For the guide frame.

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

• Bearing shells that are worn down to the nickel layer must be replaced.

• Install new bearing shells for the guide frame with the proper colored mark.

7 Torque Converter Centering Bushing

• Refer to.

8 Fitting Pin

• Make sure the crankshaft fits correctly.

9 Thrust Washer

• Only on the 3rd crankshaft bearing.

• Lubricating grooves face outward.

• Observe the locating point.

• Measuring crankshaft axial clearance, refer to => [ Crankshaft Axial Clearance, Checking ] Crankshaft Axial Clearance, Checking.

10 Bearing Shell

• For the cylinder block with oil groove.

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

• Install new bearing shells for the cylinder block with the proper colored mark.

Guide Frame, Installing





- Replace the bolts - 1 through 16 -.

- Install the alignment bushings in the guide frame.

- Tighten the guide frame bolts in the following sequence:

- Tighten the bolts - 1 through 16 - to 30 Nm.

- Tighten the bolts - 1 through 16 - to 50 Nm.

- Tighten the bolts - 1 through 16 - an additional 90° (1/4) turn.

Allocation of Crankshaft Bearing Shells for the Cylinder Block





Bearing shells with the correct thickness are allocated to the cylinder block by the factory. Colored dots on the bearing shells serve for identifying bearing shell thickness.

• - Arrow - points to belt pulley side.

Allocation of bearing shells to the cylinder block is identified with a letter by each bearing.





Allocation of Crankshaft Bearing Shells for the Guide Frame





• Bearing shells with the correct thickness are allocated to the guide frame by the factory. Colored dots on the bearing shells serve for identifying bearing shell thickness.

• Allocation of bearing shells to crankshaft is identified with a sequence of letters on the crankshaft side. The prefix "1" - arrow - indicates color code for bearing 1.





Torque Converter Bushing





• Partial and replacement engines, new as well as replacement crankshafts are delivered without the bushing - arrow -. The bushing must be installed before installing the drive plate.