Determining the classification of the crankshaft main bearing shell

• Read off the code letters on the crankcase  and enter them in the table.

  K = Clutch side

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

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• Read off the code number on the crankshaft  and enter it in the table.

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

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• Enter the code letters from the crankcase  .
• Enter the code numbers from the crankshaft  .

  	Code letters  on the crankcase	Code number/letters  on the crankshaft
  Bearing seat 1
  Bearing seat 2
  Bearing seat 3
  Bearing seat 4
  Bearing seat 5

• Use the table to determine the correct main bearing shell with lubricated groove (1)  for the crankcase.

  The main bearing shells are classified by colors  or numbers  .

  	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)

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• Use the table to determine the correct guide bearing shell with lubricated groove (1)  for the crankcase.

  The guide bearing shells are classified by colors  or numbers  .

  	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 to determine the correct main bearing shell without lubricated groove (1)  for the crankcase.

  The main bearing shells are classified by colors  or numbers  .

  	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 to determine the correct guide bearing shell without lubricated groove (1)  for the crankcase.

The guide bearing shells are classified by colors  or numbers  .

Courtesy of BMW OF NORTH AMERICA, INC.