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

Special tools required: 

• 00 2 590  . See MAINTENANCE AND GENERAL INFORMATION - SPECIAL TOOLS .
• 00 9 120 
• 11 2 110  . See ENGINE- SPECIAL TOOLS .

(piston removed) 

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 Bearing Shell Classification Number

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Install new conrod bearing shells.

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

Install piston.

Fig 2: Locating Conrod Bearing Shells

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Check connecting-rod bearing clearance: 

Piston in BDC position.

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

Fit bearing caps so that pair numbers match up.

Fig 3: Locating Connecting-Rod Bearing

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Use conrod bolts to check conrod bearing clearance.

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

Tightening torque, see 11 24 1AZ  in 11 24 CONNECTING RODS AND BEARINGS .

Fig 4: Tightening Conrod Bolts With 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 measurement scale.

Conrod bearing clearance. 

• Remove plastic thread.
• Lubricate crankshaft and bearing shells.
• Install new conrod bolts.
  Fig 5: Checking Conrod Bearing Clearance

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

Tightening torque, see 11 24 1AZ  in 11 24 CONNECTING RODS AND BEARINGS .

Fig 6: Tightening Conrod Bolts With Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.