11 24 571 Replacing all conrod bearings (M62)

(piston removed)

refer to ENGINE - TECHNICAL DATA - 540I (E39) .

Install new conrod bearing shells.

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

Install pistons,

refer to 11 25 530 REMOVING AND INSTALLING / REPLACING ALL PISTONS (M62) .

Fig 1: Installing New Conrod Bearing Shells

Courtesy of BMW OF NORTH AMERICA, INC.

Check connecting-rod bearing clearance:

Piston in BDC position.

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

Place bearing caps in position, making sure that matching numbers are paired.

Fig 2: Checking Connecting-Rod Bearing Clearance

Courtesy of BMW OF NORTH AMERICA, INC.

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

Tighten down conrod screws with special tool 00 9 120 or special tool 11 2 110, respectively.

Tightening torque, refer to 11 24 1AZ in ENGINE - TIGHTENING TORQUES - 540i .

Fig 3: Checking Connecting-Rod Clearance

Courtesy of BMW OF NORTH AMERICA, INC.

Remove bearing cover and read off bearing clearance across width of pinched plastic thread with the help of the measuring scale.

Conrod bearing clearance,

refer to ENGINE - TECHNICAL DATA - 540I (E39) .

• Remove plastic thread.
• Lubricate crankshaft and bearing shells.
• Insert new conrod bolts and tighten down.

Tightening torque, refer to 11 24 1AZ in ENGINE - TIGHTENING TORQUES - 540i

Fig 4: Measuring Bearing Clearance Across Width Of Pinched Plastic Thread With Help Of Measuring Scale

Courtesy of BMW OF NORTH AMERICA, INC.