Removing the cylinder head cover
WARNING:
Hot surfaces.
Risk of burning!
Risk of burning!
- Perform all work only on components that have cooled down.
WARNING:
Working on fuel system.
Risk of fire! Danger of explosion!
Risk of fire! Danger of explosion!
- When working on the fuel system, make sure the workstation has sufficient ventilation, e.g., by means of extraction.
- Tightly seal off open lines and connections; collect any leakage fuel directly at the point of exit.
- No fire, sparks, open flames or smoking.
Preliminary work
- Bring front compartment lid in the SERVICE POSITION .
- Deactivate the 48 v ELECTRICAL SYSTEM .
- Disconnect all battery GROUND LEADS .
- Remove the ACOUSTIC COVER .
- Remove the rear left engine compartment COVER .
- Remove the rear right engine compartment COVER .
- Remove the hood rear SEAL .
- Remove left and right WIPER ARM .
- Remove the cowl COVER .
- Remove the left and right shock tower TENSION STRUT .
- Remove the upper part FIREWALL .
- Remove rear ACOUSTIC COVER .
- Remove right sealing FRAME .
- Remove the bottom second FIREWALL .
- Remove all IGNITION COILS .
- Remove FUEL DELIVERY LINE .
- Remove the HIGH PRESSURE LINE between the high pressure pump and the rail.
- Remove the cylinders 1 to 3 RAIL with injectors.
- Remove the cylinders 4 to 6 RAIL with injectors.
- Remove HIGH PRESSURE PUMP .
- Remove the top right and left engine compartment COVER .
- Remove the left and right hood gasket STAND .
- Remove the left and right FRONT-END STRUT .
- Remove front CROSS CONNECTION .
- Remove the rear top CROSS CONNECTION .
- Remove the front UNDERBODY PROTECTION .
- Remove the fan COWL .
- Remove both ACTUATORS .
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.
Bolts of the cylinder head cover
1 Bolts of the cylinder head cover
- A Cylinder head cover
21
NOTE:
RISK OF DAMAGE
Damage to wires when disconnecting connectors and plug connections.
Sheared wires can cause a short circuit.
Damage to wires when disconnecting connectors and plug connections.
Sheared wires can cause a short circuit.
- Do not pull on wires when disconnecting connectors and plug connections.
- Unlock the locks (1).
- Feed the engine ventilation line (2) out and set it aside.
- Loosen nut (1).
- Feed out ground cable (2) and set it aside.
- Loosen screws (3).
- Thread out holder (4) and set aside.
- Unlock and detach the locks (arrows).
- Feed out the wiring harness section (1) for the sensor system 2
and put it aside.
- Unlock and release the connector (1) at the exhaust camshaft sensor.
- Loosen clamp (2).
- If installed:
- Unlock and loosen connector (1).
- Loosen screw (2).
- Remove the differential pressure sensor (3) and put it to one side.
- Loosen screws (1).
- Feed out the bracket (2) of the positive battery cable and set it aside.
- Loosen clamps (1).
- Loosen clamp (1).
- Feed out the wiring harness section (2) for the injectors and ignition coils and set aside.
- Unlock and release the connector (1) on the intake camshaft sensor.
- Loosen clamps (2).
- Loosen clamps (1).
- Loosen all the screws (21) to (1) on the cylinder head cover (A) in sequence.
- Feed out and remove the cylinder head cover (1).