11 24 571 Replacing all conrod bearings (N62)

Special tools required: 

• 00 2 590
• 00 9 120
• 11 2 110

(piston removed)

The letter (1) denotes the crankshaft construction stage.

Fig 1: Identifying Crankshaft Construction Stage

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The numbers (2) denote the bearing shell classification for the relevant bearing position from 1 to 5 (main bearing cap).

Install new conrod bearing shells.

Fig 2: Installing New Conrod Bearing Shells

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Insert one red and one blue bearing shell for each conrod.

Install piston. Refer to 11 25 530 Removing and installing/replacing all pistons (N62) .

Check connecting-rod bearing clearance: 

Piston in BDC position.

Fit special tool 00 2 590 (Plastigage Type PG 1) to the oil-free crankshaft.

Position bearing caps so that pair numbers match up.

Fig 3: Positioning Bearing Caps

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Use the old connecting-rod bolts to check connecting-rod clearance.

Tighten down conrod bolts with special tool 00 9 120 or special tool 11 2 110.

Fig 4: Tightening Conrod Bolts

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Tightening torque 11 24 1AZ. Refer to ENGINE - TIGHTENING TORQUES .

Remove bearing cap and read off bearing play at width of flattened plastic thread with assistance of measurement scale.

Fig 5: Measuring Bearing Play

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Conrod bearing clearance. Refer to ENGINE - TECHNICAL DATA .

• Remove plastic thread.
• Lubricate crankshaft and bearing shells.
• Install new connecting-rod screws.

Tighten down conrod bolts with special tool 00 9 120 or special tool 11 2 110.

Fig 6: Tightening Conrod Bolts

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Tightening torque 11 24 1AZ. Refer to ENGINE - TIGHTENING TORQUES .