Fuel Supply System,Servicing

Safety precautions when working on the fuel supply system

CAUTION: When performing repair work, especially due to the confined conditions in the engine compartment, pay attention to the following:
^ Route all types of lines (e.g. for fuel, hydraulics, EVAP system, coolant, refrigerant, brake fluid and vacuum) as well as electrical wiring so that the original positions are restored.
^ Ensure sufficient clearance to all moving or hot components.

When removing and installing the fuel gauge sender or fuel pump (fuel delivery unit) from a full or partly full fuel tank the following must be observed:

WARNING: Fuel supply lines are under pressure! Before removing a hose connection wrap a cloth around the connection. Then release pressure by carefully pulling the hose off the connection.

^ Before beginning work, switch on the exhaust extraction system and place an extraction hose close to the sender opening in the fuel tank to extract escaping fuel fumes. If no exhaust extraction system is available, a radial fan with a displacement greater than 15 m3/h can be used (as long as motor is not in air flow).
^ Prevent skin contact with fuel! Wear fuel resistant gloves!





^ For safety reasons, fuse No. 28 must be removed from fuse holder before opening fuel system because fuel pump can be activated by door contact switch in driver's door.