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Home >> BMW >> 2012 >> X6 50i >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine - Repair (N63) >> Connecting Rod With Bearing >> 11 24 571 Replacing all connecting rod bearings (N63) >> Check connecting-rod bearing clearance

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 1: Locating Connecting-Rod Bearing Cap Mark
G04739761Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Do not distort connecting rods or crankshaft.

Use conrod bolts to check conrod bearing clearance.

Conrod bolts with special tool 00 9 120.

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

Fig 2: Tightening Connecting-Rod Bearing Cap Bolt
G06178493Courtesy of BMW OF NORTH AMERICA, INC.

Remove bearing cap and read off bearing play at width of flattened plastic thread with assistance of measurement scale.

Conrod bearing clearance  .

Fig 3: Measuring Conrod Bearing Clearance
G04739763Courtesy of BMW OF NORTH AMERICA, INC.

Secure conrod bolts with special tool 00 9 120.

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

Fig 4: Tightening Connecting-Rod Bearing Cap Bolt
G06178493Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.