Determining the classification of the crankshaft main bearing shell
CAUTION:
Component with heavy weight.
Injury hazard!
Injury hazard!
- Note component's center of gravity.
- Support component using a jack.
- Secure component against falling off the jack.
CAUTION:
On releasing high pressure line, fuel may emerge at high speed.
Injury hazard!
Injury hazard!
- Wear suitable personal protective equipment.
- Before performing any installation work, allow cooling system to cool down to less than 40°C.
- Note warnings on cylinder head cover.
NOTE:
TECHNICAL INFORMATION
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
Preliminary work
- Remove ENGINE
- Install the ENGINE on the assembly stand
- Release the OIL DRAIN PLUG
- Tighten the OIL DRAIN PLUG
- Remove all SPARK PLUGS
- Remove the HIGH PRESSURE LINE between the high pressure pump and the rail
- Remove HIGH PRESSURE PUMP
- Remove the RAIL with injectors
- Remove both ACTUATORS
- Remove the cylinder head COVER .
- Remove tank VENT VALVE .
- Remove the INTAKE PLENUM .
- Remove the cylinder head HEAT SHIELD .
- Remove the exhaust turbocharger OIL RETURN LINE .
- Remove the exhaust turbocharger coolant RETURN LINE .
- Remove the exhaust gas turbocharger COOLANT FEED LINE .
- Block ENGINE in TDC firing position.
- Remove CHAIN TENSIONER .
- Release the intake adjuster VANOS CENTRAL VALVE .
- Release exhaust camshaft adjuster VANOS CENTRAL VALVE .
- Remove the intake adjuster VANOS CENTRAL VALVE .
- Remove the exhaust camshaft adjuster VANOS CENTRAL VALVE .
- Remove intake ADJUSTER .
- Remove exhaust camshaft ADJUSTER .
- Remove the TEST GAUGES for securing the camshafts.
- Remove the CYLINDER HEAD .
- Remove the cylinder HEAD GASKET .
- Remove the oil pan ACOUSTIC COVER .
- Remove the VIBRATION DAMPER .
- Remove FLYWHEEL .
- Remove FRONT AXLE DIFFERENTIAL
- Remove bearing BRACKET .
- Remove OIL PAN .
- Remove rear timing case COVER .
- Remove TIMING CHAIN .
- Remove oil VACUUM PUMP .
- Remove the OIL DEFLECTOR .
- Remove all PISTONS with connecting rod.
- Remove CRANKSHAFT .
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) |