Releasing the VANOS central valve of the intake adjuster
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 all SPARK PLUGS .
- 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 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 center UNDERBODY PROTECTION .
- Remove rear UNDERBODY PROTECTION .
- Remove the fan COWL .
- Remove the positive battery cable HOLDER .
- Remove both ACTUATORS .
- Remove the cylinder head COVER .
- Block ENGINE in TDC firing position.
- Remove chain TENSIONER .
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.
- Have the special tool 0 496 855
ready.
- Have the special tool 2 450 487
ready.
- Have the special tool 2 469 138
ready.
- Keep the following special tools and standard tools ready:
Number Description 1 Standard torque wrench 2 Wrench socket set 2 450 487 3 Reversible ratchet 0 496 855 4 Commercially available reduction 5 Adapter 2 469 138 - Assemble all the special tools and commercially available tools as shown.NOTE: The figure shows the rear of the engine.
- Release the VANOS central valve (1) of the intake adjuster.