Removing the cylinder head cover
WARNING:
High-voltage system.
The high-voltage system operates on the basis of hazardous, electrical voltage and high currents. Mortal hazard through electric shock!
The high-voltage system operates on the basis of hazardous, electrical voltage and high currents. Mortal hazard through electric shock!
- All work on the high-voltage system may only be carried out by specially trained and technically experienced personnel.
- For additional information see: 61 00... SAFETY INSTRUCTIONS ON HANDLING HYBRID CARS .
- For additional information see: 61 25... NOTES ON REPAIR OF HIGH-VOLTAGE BATTERY UNIT .
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.
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
- Refer to BRINGING FRONT COMPARTMENT LID IN THE SERVICE POSITION .
- Refer to DISCONNECTING ALL BATTERY GROUND LEADS .
- Refer to REMOVING THE ACOUSTIC COVER .
- Refer to REMOVING THE SEAL FOR THE HOOD REAR .
- Refer to REMOVING THE COVER OF THE ENGINE COMPARTMENT AT THE REAR LEFT .
- Refer to REMOVING THE COVER OF THE REAR RIGHT ENGINE COMPARTMENT .
- Refer to REMOVING LEFT AND RIGHT WIPER ARM .
- Refer to REMOVING THE COWL COVER .
- Refer to REMOVING TRAILING LINK AT SPRING BOLT .
- Refer to REMOVING THE CENTER COWL UPPER PART .
- Refer to RELEASING THE HIGH-VOLTAGE CABLES ON THE EME .
- Refer to REMOVING ACOUSTIC COVER AT REAR .
- Refer to REMOVING BOTH ACTUATORS .
- Refer to REMOVING ALL IGNITION COILS .
- Refer to REMOVING FUEL DELIVERY LINE .
- 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 THE COVER FOR THE CENTER ENGINE COMPARTMENT .
- Refer to REMOVING BOTH FRONT-END STRUTS .
- Refer to REMOVING FRONT CROSS CONNECTION (FRONT-END STRUT REMOVED) .
- Refer to REMOVING THE REAR TOP CROSS CONNECTION .
- Refer to REMOVING FAN COWL .
- Refer to REMOVING THE INTAKE FILTER HOUSING (TENSION STRUT ON SHOCK TOWER REMOVED) .
- Refer to REMOVING THE RESONATOR WITH THE TOP CLEAN AIR PIPE .
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) .
NOTE:
The following step(s) must be performed if the listed component(s) is/are installed.
- Unlock and release the plug connection (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.
- Slightly lift the holder (1) for tension relief.
- Feed out and remove the cylinder head cover (2) in an upward direction.