Safety precautions when working on the fuel supply system
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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.
- Make sure 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:
CAUTION:
Fuel supply lines are under pressure! Before removing from hose connections, wrap a cloth around the connection. Then release pressure by carefully pulling hose off connection.
- Before commencing work, switch on exhaust extraction system and place an extraction hose close to 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 m 3 /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 as fuel pump can be activated by door contact switch in drivers door.