11 24 571 Replacing All Connecting Rod Bearings (N63)

Special Tools Required: 

• 00 2 590 .
• 00 9 120 .

Necessary Preliminary Tasks: 

• Remove All PISTONS .

Install New Connecting Rod Bearing Shells.

Install One Blue Bearing Shell (1) and One Red Bearing Shell (2) In Each Connecting Rod.

Install PISTONS .

Fig 1: Identifying Blue Bearing Shell and Red Bearing Shell

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Installation Note: 

The Bearing Shells On The Connecting Rod Are Coded.

Connecting Rod Bearing Cap (1): The Red Bearing Shell Is Fitted and The Fastening Notches Are On The Left and Right Sides of The Bearing Shell (See Arrows In Illustration).

Connecting Rod (2): The Blue Bearing Shell Is Fitted and The Fastening Notches Are One Side of The Bearing Shell (See Arrows In Illustration).

Fig 2: Identifying Correct Fitting of Bearing Shells

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Check Connecting-Rod Bearing Play. 

Piston In BDC Position.

Fit Special Tool 00 2 590 (Plastigage Type Pg 1) To Oil-Free Crankshaft.

Fit Bearing Caps So That Matching Numbers Match Up.

Fig 3: Fitting Special Tool 00 2 590 (Plastigage Type Pg 1) To Oil-Free Crankshaft

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Use Connecting Rod Bolts To Check Connecting-Rod Bearing Play.

Connecting Rod Bolts with Special Tool 00 9 120 .

Tightening torque 11 24 1AZ .

Fig 4: Tightening Connecting Rod Bolts Using Special Tool 00 9 120

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Remove Bearing Cap and Read Off Bearing Play At Width of Flattened Plastic Thread with Assistance of Measuring Scale.

CONNECTING-ROD BEARING PLAY .

• Remove Plastic Thread.
• Lubricate Crankshaft and Bearing Shells.
• Install New Connecting Rod Bolts.
  Fig 5: Measuring Connecting-Rod Bearing Play

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Secure Connecting Rod Bolts with Special Tool 00 9 120 .

Tightening torque 11 24 1AZ .

Fig 6: Tightening Connecting Rod Bolts Using Special Tool 00 9 120

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble Engine.