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11 24 571 Replacing all connecting rod bearings (S65)

WARNING: This page is about a different variant/trim than selected.

Necessary preliminary tasks: 

Install new conrod bearing shells.

Installation: 

Install one blue (1) and one red (2) bearing shell in each conrod.

Install all PISTONS  .

Fig 1: Identifying Bearing Shell
G04748253Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Check connecting rod bearing clearance.

Piston in BDC position.

Place special tool 00 2 590 (Plastigage model PG 1) on oil-free crankshaft.

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

Fig 2: Identifying Bearing Caps Position
G04741606Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Do not distort connecting rods or crankshaft.

Use the old conrod bearing bolts to check conrod clearance.

Tighten down conrod bolts with special tool 00 9 120 TORQUE ANGLE MEASURING DIAL .

Tightening torque: 11 24 1AZ .

Fig 3: Tightening Connecting Rod Bolts Using Special Tool (00 9 120)
G04739762Courtesy of BMW OF NORTH AMERICA, INC.

Remove conrod bearing cap and read off bearing clearance at width of pinched plastic thread on measuring scale.

Conrod bearing clearance: Refer to TECHNICAL DATA .

Tightening torque: 11 24 1AZ .

Fig 4: Locating Bearing Clearance At Width Of Crushed Plastic Thread (Plastigage)
G04739763Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.