Replacing all crankshaft main bearing shells (B48 and B46 engines) (Cooper Clubman S and JCW)

Special tools required: 

• 00 2 010

Attention!

Replace main bearing bolts.

There must be no oil in the blind holes (risk of cracking).

Do not wash off screw coating.

Incorrect assembly of the bearing caps will result in damage to the crankcase.

Installation note: 

Main bearing shells and guide shells are still classified by colors or numbers.

The classification of the main bearing shells and guide shells is being changed to a classification exclusively by numbers.

The classification by colors is dropped.

Preliminary work needed: 

• Remove CRANKSHAFT 

Enter the code letter on the crankcase in the table.

K = Clutch side

Item numbers (5) to (1) describe the bearing seats 5 to 1. The code number is located on each of the crankshaft bearing caps.

Courtesy of BMW OF NORTH AMERICA, INC.

Item numbers (1) to (5) describe the bearing seats 1 to 5. The code number is located on each of the crankshaft bearing caps

Courtesy of BMW OF NORTH AMERICA, INC.

Enter the code letters of the crankcase and the code numbers of the crankshaft.

Bearing seat 1	Code letter on the crankcase	Key performance indicator on the crankshaft
Bearing seat 2
Bearing seat 3
Bearing seat 4
Bearing seat 5

Use the table below to determine the colors or numbers of the main bearing shells (1) with lubricating groove in the crankcase: 

	A	B	C
1	Classification 1 (blue)	Classification 2 (green)	Classification 2 (green)
2	Classification 1 (blue)	Classification 2 (green)	Classification 3 (brown)
3	Classification 2 (green)	Classification 2 (green)	Classification 3 (brown)

Courtesy of BMW OF NORTH AMERICA, INC.

Use the table below to determine the colors or numbers of the guide bearing shells (1) with lubricating groove in the crankcase: 

	A	B	C
1	Classification 1 (blue)	Classification 2 (green)	Classification 2 (green)
2	Classification 1 (blue)	Classification 2 (green)	Classification 3 (brown)
3	Classification 2 (green)	Classification 2 (green)	Classification 3 (brown)

Courtesy of BMW OF NORTH AMERICA, INC.

Use the table below to determine the colors or numbers of the main bearing shells (1) without lubricating groove in the crankshaft bearing cap: 

	A	B	C
1	Classification 1 (blue)	Classification 1 (blue)	Classification 2 (green)
2	Classification 2 (green)	Classification 2 (green)	Classification 2 (green)
3	Classification 2 (green)	Classification 3 (brown)	Classification 3 (brown)

Courtesy of BMW OF NORTH AMERICA, INC.

Use the table below to determine the colors or numbers of the guide bearing shells (1) without lubricating groove in the crankshaft bearing cap: 

	A	B	C
1	Classification 1 (blue)	Classification 1 (blue)	Classification 2 (green)
2	Classification 2 (green)	Classification 2 (green)	Classification 2 (green)
3	Classification 2 (green)	Classification 3 (brown)	Classification 3 (brown)

Courtesy of BMW OF NORTH AMERICA, INC.

Place main bearing shell (1) with lubricating groove in crankcase (see arrows in illustration).

Observe combination of colors or numbers according to the table.

Courtesy of BMW OF NORTH AMERICA, INC.

Observe combination of colors or numbers according to the table.

Courtesy of BMW OF NORTH AMERICA, INC.

Insert main bearing shell (1) with no lubricating groove in the crankshaft bearing cap (see arrows in illustration).

Observe combination of colors or numbers according to the table.

Courtesy of BMW OF NORTH AMERICA, INC.

Install CRANKSHAFT. 

Check SIDE CLEARANCE .

If necessary, check guide bearing shells, crankshaft and crankcase.

Courtesy of BMW OF NORTH AMERICA, INC.

Rotate crankshaft (1) with special tool 00 2 010 in arrow direction.

Check crankshaft COEFFICIENT OF FRICTION .

Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work: 

Assemble engine.