Removing all the pistons with the connecting rod
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.
Preliminary work
- 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 FRONT AXLE DIFFERENTIAL .
- Refer to REMOVING BEARING BRACKET .
- Refer to REMOVING OIL SUMP .
- Refer to REMOVING OIL PUMP .
- Refer to REMOVING THE OIL DEFLECTOR .
NOTE:
The description is provided only at one component. The procedure is the same for all other components.
Removing piston with connecting rod
NOTE:
TECHNICAL INFORMATION
Piston, piston pin, connecting rod and connecting rod bearing shells are matched to each other and balanced.
Always install the pistons, piston pins, connecting rods and connecting rod bearing shells in the cylinder from which they were removed.
Piston, piston pin, connecting rod and connecting rod bearing shells are matched to each other and balanced.
Always install the pistons, piston pins, connecting rods and connecting rod bearing shells in the cylinder from which they were removed.
NOTE:
TECHNICAL INFORMATION
The connecting rods of the engine are balanced and matched to each other.
A single connecting rod is not permitted to be replaced. Always replace all connecting rods.
The connecting rods of the engine are balanced and matched to each other.
A single connecting rod is not permitted to be replaced. Always replace all connecting rods.
Releasing the connecting rod bearing at the bottom
NOTE:
RISK OF DAMAGE
Damage on the cylinder wall and oil spray nozzles .
A large force can scratch the cylinder wall and bend the oil spray nozzles .
Damage on the cylinder wall and oil spray nozzles .
A large force can scratch the cylinder wall and bend the oil spray nozzles .
- Carefully shift the piston and connecting rod in the engine block.
- Turn the crankshaft until the connecting rod bearing journal (1) reaches a vertical position.
NOTE:
RISK OF DAMAGE
Engine damage caused by incorrectly installed bearing shells and bearing brackets .
If the bearing shells and bearing brackets are installed incorrectly, then engine damage can occur .
Engine damage caused by incorrectly installed bearing shells and bearing brackets .
If the bearing shells and bearing brackets are installed incorrectly, then engine damage can occur .
- Always install all bearing shells and bearing brackets in the same position from which they were removed.
- Unscrew the connecting rod bolts (1) .
- Remove the connecting rod bearing cap (2)
and put to one side in the correct order.
It must be possible to reinstall connecting rod bearing caps (2) in the correct position.
NOTE:
RISK OF DAMAGE
Engine damage caused by incorrectly installed bearing shells and bearing brackets .
If the bearing shells and bearing brackets are installed incorrectly, then engine damage can occur .
Engine damage caused by incorrectly installed bearing shells and bearing brackets .
If the bearing shells and bearing brackets are installed incorrectly, then engine damage can occur .
- Always install all bearing shells and bearing brackets in the same position from which they were removed.
- Remove the connecting rod bearing (1)
.
It must be possible to reinstall connecting rod bearings (1) in the correct position.
- Screw special tool 2 463 755
in at large connecting rod eye.
- Press piston (1) with connecting rod up and out of crankcase.
Preliminary work
- 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 FRONT AXLE DIFFERENTIAL .
- Refer to REMOVING BEARING BRACKET .
- Refer to REMOVING OIL SUMP .
- Refer to REMOVING OIL PUMP .
- Refer to REMOVING THE OIL DEFLECTOR .
NOTE:
The description is provided only at one component. The procedure is the same for all other components.
Removing piston with connecting rod
NOTE:
TECHNICAL INFORMATION
Piston, piston pin, connecting rod and connecting rod bearing shells are matched to each other and balanced.
Always install the pistons, piston pins, connecting rods and connecting rod bearing shells in the cylinder from which they were removed.
Piston, piston pin, connecting rod and connecting rod bearing shells are matched to each other and balanced.
Always install the pistons, piston pins, connecting rods and connecting rod bearing shells in the cylinder from which they were removed.
NOTE:
TECHNICAL INFORMATION
The connecting rods of the engine are balanced and matched to each other.
A single connecting rod is not permitted to be replaced. Always replace all connecting rods.
The connecting rods of the engine are balanced and matched to each other.
A single connecting rod is not permitted to be replaced. Always replace all connecting rods.
Releasing the connecting rod bearing at the bottom
NOTE:
RISK OF DAMAGE
Damage on the cylinder wall and oil spray nozzles .
A large force can scratch the cylinder wall and bend the oil spray nozzles .
Damage on the cylinder wall and oil spray nozzles .
A large force can scratch the cylinder wall and bend the oil spray nozzles .
- Carefully shift the piston and connecting rod in the engine block.
- Turn the crankshaft until the connecting rod bearing journal (1) reaches a vertical position.
NOTE:
RISK OF DAMAGE
Engine damage caused by incorrectly installed bearing shells and bearing brackets .
If the bearing shells and bearing brackets are installed incorrectly, then engine damage can occur .
Engine damage caused by incorrectly installed bearing shells and bearing brackets .
If the bearing shells and bearing brackets are installed incorrectly, then engine damage can occur .
- Always install all bearing shells and bearing brackets in the same position from which they were removed.
- Unscrew the connecting rod bolts (1) .
- Remove the connecting rod bearing cap (2)
and put to one side in the correct order.
It must be possible to reinstall connecting rod bearing caps (2) in the correct position.
NOTE:
RISK OF DAMAGE
Engine damage caused by incorrectly installed bearing shells and bearing brackets .
If the bearing shells and bearing brackets are installed incorrectly, then engine damage can occur .
Engine damage caused by incorrectly installed bearing shells and bearing brackets .
If the bearing shells and bearing brackets are installed incorrectly, then engine damage can occur .
- Always install all bearing shells and bearing brackets in the same position from which they were removed.
- Remove the connecting rod bearing (1)
.
It must be possible to reinstall connecting rod bearings (1) in the correct position.
- Screw special tool 2 463 755
in at large connecting rod eye.
- Press piston (1) with connecting rod up and out of crankcase.