Determining the classification of the crankshaft main bearing shell
WARNING: This page is about a different car, the 2022 BMW X7, 2021 BMW X7, 2020 BMW X7, and 2019 BMW X7. However, it is still accessible from the selected car via links, so may be relevant.
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.
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.
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
- Refer to DEACTIVATING THE 48 V ELECTRICAL SYSTEM .
- Refer to REMOVING THE COMPLETE FRONT AXLE WITH THE ENGINE AND TRANSMISSION .
- Refer to REMOVING THE ENGINE FROM THE FRONT AXLE .
- Refer to INSTALLING THE ENGINE ON THE ASSEMBLY JIG .
- Refer to RELEASING THE OIL DRAIN PLUG .
- Refer to TIGHTENING THE OIL DRAIN PLUG .
- Refer to REMOVING CHARGE AIR LINE .
- Refer to REMOVING ACOUSTIC COVER AT REAR .
- Refer to REMOVING ALL IGNITION COILS .
- Refer to REMOVING ALL SPARK PLUGS .
- Refer to REMOVING THE HIGH PRESSURE LINE BETWEEN THE HIGH PRESSURE PUMP AND THE RAIL .
- Refer to REMOVING HIGH PRESSURE PUMP .
- Refer to REMOVING THE HIGH-PRESSURE RAIL WITH INJECTORS OF CYLINDERS 1 TO 3 .
- Refer to REMOVING THE HIGH-PRESSURE RAIL WITH INJECTORS OF CYLINDERS 4 TO 6 .
- Refer to REMOVING BOTH ACTUATORS .
- Refer to REMOVING THE CYLINDER HEAD COVER .
- Refer to REMOVING TANK VENT VALVE .
- Refer to REMOVING THE INTAKE PLENUM .
- Refer to REMOVING THE LAMBDA OXYGEN SENSOR .
- Refer to REMOVING THE OXYGEN SENSOR MONITOR .
- Refer to REMOVING CATALYTIC CONVERTER .
- Refer to REMOVING THE OIL RETURN LINE FOR THE EXHAUST TURBOCHARGER .
- Refer to REMOVING THE COOLANT LINE BETWEEN THE COOLANT PUMP AND CYLINDER HEAD .
- Refer to BLOCKING ENGINE IN TDC FIRING POSITION .
- Refer to REMOVING CHAIN TENSIONER .
- Refer to RELEASING THE VANOS CENTRAL VALVE OF THE INTAKE ADJUSTER .
- Refer to RELEASING VANOS CENTRAL VALVE OF THE EXHAUST CAMSHAFT ADJUSTER .
- Refer to REMOVING THE VANOS CENTRAL VALVE OF THE INTAKE ADJUSTER .
- Refer to REMOVING THE VANOS CENTRAL VALVE OF THE EXHAUST CAMSHAFT ADJUSTER .
- Refer to REMOVING INTAKE ADJUSTER .
- Refer to REMOVING EXHAUST CAMSHAFT ADJUSTER .
- Refer to REMOVING THE TEST GAUGES FOR SECURING THE CAMSHAFTS .
- Refer to REMOVING THE CYLINDER HEAD .
- Refer to REMOVING THE CYLINDER HEAD GASKET .
- Refer to REMOVING THE VIBRATION DAMPER .
- Refer to REMOVING FLYWHEEL .
- Refer to REMOVING FRONT AXLE DIFFERENTIAL .
- Refer to REMOVING BEARING BRACKET .
- Refer to REMOVING OIL SUMP .
- Refer to REMOVING OIL PUMP .
- Refer to REMOVING THE OIL DEFLECTOR .
- Refer to REMOVING ALL THE PISTONS WITH THE CONNECTING ROD .
- Refer to REMOVING REAR TIMING CASE COVER .
- Refer to REMOVING TIMING CHAIN .
- Refer to REMOVING CRANKSHAFT .
NOTE:
TECHNICAL INFORMATION
The main bearing shells and guide bearing shells are classified by numbers.
Observe the classification of the main and guide bearing shells.
The main bearing shells and guide bearing shells are classified by numbers.
Observe the classification of the main and guide bearing shells.
- Read off the code letters on the crankcase
.
K = Clutch side
Item numbers (7) to (1) describe the bearing seats 7 to 1. The code number is located on each of the crankshaft bearing caps.
- Read off the code letters on the crankshaft
.
K = Clutch side
Item numbers (1) to (7) describe the bearing seats 1 to 7. The code number is located on each of the crankshaft bearing caps.
- Enter the code letters of the crankcase and the code letters of the crankshaft .
| Code letter on the crankcase | Key performance indicator on the crankshaft | |
| Bearing seat 1 | ||
| Bearing seat 2 | ||
| Bearing seat 3 | ||
| Bearing seat 4 | ||
| Bearing seat 5 | ||
| Bearing seat 6 | ||
| Bearing seat 7 |
Check
Result
» All code letters are to be found in the table.
Measure
- Determine the classification of the main guide bearing shells based on further information.
Table for classifying main bearing shells 1, 2, 3, 5, 6 (X7 xDrive40i 2019-2022)
Table for classifying guide bearing shell 4 (X7 xDrive40i 2019-2022)
Table for classifying main bearing shell 7 (X7 xDrive40i 2019-2022)