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Regulations concerning cleanliness when working on the fuel supply/fuel injection system > < Supplementary instructions and assembly work on vehicles with an air conditioning system

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Safety precautions when working on the fuel supply system
Safety precautions when working on the fuel supply system
  WARNING
When undertaking all assembly work, particularly in the engine compartment due to its cramped construction, please observe the following:
t  Lay lines of all kinds (e.g. for fuel, hydraulic fluid, cooling fluid and refrigerent, brake fluid, vacuum) and electrical lines in such a way that the original line guide is re-established.
t  Ensure that there is adequate free access to all moving or hot components.
   
t  Fuel delivery unit is activated by switching on the ignition and the door contact switch of the driver door. Before opening the fuel system and for reasons of safety, if the battery is not disconnected, the connector must be disconnected from the fuel delivery unit.
When removing and installing the fuel gauge sender from a full or partly filled fuel tank, pay attention to the following:
t  The extraction hose of an exhaust extraction system which is switched on, must be positioned close to the assembly opening of the fuel tank in order to extract the released fuel gases, even before the work is commenced. If no exhaust extraction system is available, a radial fan (motor not in air flow of fan) with a delivery volume of more than 15 m 3/h must be used.
t  Avoid skin contact with fuel! Wear fuel-resistant gloves!
  S20-0300

Regulations concerning cleanliness when working on the fuel supply/fuel injection system > < Supplementary instructions and assembly work on vehicles with an air conditioning system