11 24 571 Replacing all connecting rod bearings (M52 / S52 / M52TU / M54 / M56)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2006 BMW X5, 2006 BMW X3, 2005 BMW X5, 2005 BMW X3, and 2004 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

00 2 590
00 9 120
11 2 110

(piston removed)

IMPORTANT: Note grinding stages on crankshaft. Refer to ENGINE - TECHNICAL DATA .

Install new connecting rod bearing shells.

Insert one blue (1) and one red (2) bearing shell (irrespective of the color coding on the connecting rod shaft).

Fig 1: Inserting Bearing Shells

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Install piston. Refer to 11 25 530 REMOVING AND INSTALLING OR REPLACING ALL PISTONS (M52 / S52 / M52TU / M54 / M56) .

Check connecting rod bearing clearance.

Piston in BDC position.

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

Fig 2: Fitting Special Tool To Oil -Free Crankshaft

Courtesy of BMW OF NORTH AMERICA, INC.

Fit bearing caps so that pair numbers match up.

IMPORTANT: Do not distort connecting rods or crankshaft.

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

Fig 3: Tightening Down Connecting Rod Bolts With Special Tool

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

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 4: Measuring Bearing Play

Courtesy of BMW OF NORTH AMERICA, INC.

Connecting Rod bearing clearance, refer to ENGINE - TECHNICAL DATA .

Remove plastic thread.
Coat crankshaft and bearing shells with oil.
Install new connecting rod bolts and tighten down.
Tightening torque 11 24 1AZ. Refer to ENGINE - TIGHTENING TORQUES .