11 24 571 Replacing all conrod bearings (N62/N62TU)

WARNING: This page is about a different car, the 2005 BMW 545i and 2004 BMW 545i. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

For Special Tool identification, see ENGINE- SPECIAL TOOLS - 5-SERIES (E60) and MAINTENANCE & GENERAL INFORMATION - SPECIAL TOOLS - 5-SERIES (E60) .

Special Tools Required:

00 2 590
00 9 120
11 2 110

(Piston Removed)

CAUTION: Note grinding stages on crankshaft. Refer to ENGINE - TECHNICAL DATA- 545I (4.4L) E60/N62 .

The letter (1) denotes the crankshaft construction stage.

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

Fig 1: Identifying Crankshaft Construction Stage

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Install new conrod bearing shells.

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:

Fig 2: Identifying Conrod Bearing Shells

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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: Checking Connecting-Rod Bearing Clearance

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CAUTION: Do not distort conrods or crankshaft.

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.

Tightening torque, refer to 11 24 1AZ in ENGINE - TIGHTENING TORQUES - 545I (4.4L) E60 .

Fig 4: Tightening Down Conrod Bolts With Special Tool

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

Conrod bearing clearance. (refer to ENGINE - TECHNICAL DATA- 545I (4.4L) E60/N62 .)

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

Fig 5: Reading Off Bearing Play With Measurement Scale
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Tighten down conrod bolts with special tool 00 9 120 or special tool 11 2 110.

Tightening torque, refer to 11 24 1AZ in ENGINE - TIGHTENING TORQUES - 545I (4.4L) E60 .

Fig 6: Securing Conrod Bolts With Torque Angle Measuring Dial

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