Determining the classification of the crankshaft main bearing shell
NOTE:
TECHNICAL INFORMATION
The main bearing shells and guide bearing shells are still classified by colors or numbers.
The classification of the main bearing shells and guide bearing shells is being changed to a classification using only numbers. The color classification is being dropped.
The main bearing shells and guide bearing shells are still classified by colors or numbers.
The classification of the main bearing shells and guide bearing shells is being changed to a classification using only numbers. The color classification is being dropped.
- 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.
- 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.
- 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) |
- 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) |
- 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) |
- 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.
| 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) |