Checking the timings of the camshaft
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 MOVING THE HOOD TO THE SERVICE POSITION .
- Refer to DEACTIVATING THE 48 V ELECTRICAL SYSTEM .
- Refer to DEACTIVATING VEHICLE-SPECIFIC HIGH-VOLTAGE OR LOW-VOLTAGE VEHICLE ELECTRICAL SYSTEM .
- Refer to REMOVING THE ACOUSTIC COVER .
- Refer to REMOVING LEFT AND RIGHT WIPER ARM .
- Refer to REMOVING THE REAR HOOD SEAL .
- Refer to REMOVING WINDSHIELD PANEL COVER .
- Refer to REMOVING THE CENTER COWL UPPER PART .
- Refer to REMOVING ACOUSTIC COVER AT REAR .
- Refer to REMOVING THE STRUT BRACE AT THE LEFT AND RIGHT .
- Refer to REMOVING THE RIGHT TENSION STRUT ON THE SHOCK TOWER .
- Refer to REMOVING ALL IGNITION COILS .
- Refer to REMOVING ALL SPARK PLUGS .
- Refer to REMOVING THE INTAKE FILTER HOUSING (TENSION STRUT ON SHOCK TOWER REMOVED) .
- Refer to REMOVING CLEAN AIR PIPE AND RESONATOR .
- Refer to REMOVING THE HIGH PRESSURE LINE BETWEEN THE HIGH PRESSURE PUMP AND THE RAIL .
- Refer to REMOVING FUEL DELIVERY LINE .
- 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 THE FRONT UNDERBODY PROTECTION .
- Refer to REMOVING THE STIFFENING PLATE .
- Get the set of special tools 2 456 372
ready.
Number Description 1 Basic carrier 2 Setting gauge 0.7° for adjusting the intake camshaft 3 Setting gauge 0.5° for adjusting the exhaust camshaft 4 Basic carrier screws on cylinder head 5 Screw gauge on basic carrier - Provide test gauges from the set of special tools 2 358 122
.
Number Description 1 Test gauges for fixing in place the intake camshaft 2 Test gauges for fixing in place the exhaust camshaft - Have the special tool 2 288 380
ready.
Number Description 1 Locating stud NOTE: RISK OF DAMAGE
Damage to the engine.
If the engine is manually rotated in the wrong direction of rotation, the engine can be damaged.- Only rotate the engine manually in the correct direction of rotation: a) clockwise when looking at the damper, or b) counterclockwise when looking at the chain drive. b) applies only if the timing chain is installed in the rear.
- With the special tool, turn the engine 0 493 380 (11 6 480) to the TDC firing position of cylinder 1.
- Make sure the markings (1)
on the intake camshaft (E)
and the exhaust camshaft (A)
are able to be read from above.
- Make sure the cam (1)
on the exhaust camshaft on cylinder 1
is pointing slightly to the inside right at an angle.
- Make sure the cam (1)
on the intake camshaft on cylinder 1
is pointing leftward at an angle.
- Make sure the flattened areas (1)
on the intake camshaft and the exhaust camshaft are pointing upwards at an angle.
- Position the basic carrier (1)
from the set of special tools 2 456 372
on the cylinder head.
- Tighten the screws (1)
from special tool set 2 456 372
on the basic carrier (2)
.TIGHTENING TORQUE SPECIFICATIONS
Basic carrier to cylinder head M6 Tightening torque 8 Nm - Position the test gauge (1) from the set of special tools 2 358 122 between the intake camshaft and the basic carrier from the set of special tools 2 456 372 .
- Position the test gauge (2) from the set of special tools 2 358 122 between the exhaust camshaft and the basic carrier from the set of special tools 2 456 372 .
- Tighten screws (arrows).TIGHTENING TORQUE SPECIFICATIONS
Test gauge to basic carrier M6 Tightening torque 8 Nm - Guide out and remove sealing cap (1)
.
- Vehicles with automatic transmission:
Dimension (X) = 66 mm
Special tool 2 288 380 must be inserted up to dimension (X) into the dowel hole.
- Vehicles with automatic transmission:
Special tool 2 288 380 incorrectly positioned.
- TDC firing position of cylinder 1 not
achieved.
- Vehicles with automatic transmission:
Special tool 2 288 380 correctly positioned.
Engine is in TDC firing position of cylinder 1.
Follow-up work
- Refer to INSTALLING CYLINDER HEAD COVER .
- Refer to INSTALLING BOTH ACTUATORS .
- Refer to PREPARING THE INJECTORS FOR INSTALLATION .
- Refer to INSTALLING THE HIGH-PRESSURE RAIL WITH INJECTORS OF THE CYLINDERS 4 TO 6 .
- Refer to INSTALLING THE HIGH-PRESSURE RAIL WITH INJECTORS OF THE CYLINDERS 1 TO 3 .
- Refer to INSTALLING HIGH PRESSURE PUMP .
- Refer to INSTALLING THE HIGH-PRESSURE LINE BETWEEN THE HIGH-PRESSURE PUMP AND THE HIGH-PRESSURE RAIL .
- Refer to INSTALLING FUEL DELIVERY LINE .
- Refer to INSTALLING ALL SPARK PLUGS .
- Refer to INSTALLING ALL IGNITION COILS .
- Refer to INSTALLING ACOUSTIC COVER AT REAR .
- Refer to INSTALLING THE CENTER COWL UPPER PART .
- Refer to INSTALLING WINDSHIELD PANEL COVER .
- Refer to INSTALLING LEFT AND RIGHT WIPER ARM .
- Refer to INSTALLING THE REAR HOOD SEAL .
- Refer to INSTALLING THE STRUT BRACE ON THE LEFT AND RIGHT .
- Refer to INSTALLING THE CLEAN AIR PIPE AND THE RESONATOR .
- Refer to INSTALLING THE INTAKE FILTER HOUSING (TENSION STRUT REMOVED ON SHOCK TOWER) .
- Refer to INSTALLING THE TENSION STRUT ON THE RIGHT SHOCK TOWER .
- Refer to DEACTIVATING VEHICLE-SPECIFIC HIGH-VOLTAGE OR LOW-VOLTAGE VEHICLE ELECTRICAL SYSTEM .
- Refer to ACTIVATING THE 48 V ELECTRICAL SYSTEM .
- Refer to INSTALLING ACOUSTIC COVER .
- Refer to INSTALLING THE STIFFENING PLATE .
- Refer to INSTALLING FRONT UNDERBODY PROTECTION .
- Refer to TAKING HOOD OUT OF THE SERVICE POSITION .