| Safety precautions when working on fuel supply system |
Caution | When doing any repair work, especially in the engine compartment, pay attention to the following due to the cramped conditions: |
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| Route all the various lines (e.g. for fuel, hydraulics, activated charcoal filter system, coolant and refrigerant, brake fluid and vacuum) and electrical wiring in their original positions. |
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| To avoid damage to lines, ensure sufficient clearance to all moving or hot components. |
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| When removing and installing fuel gauge sender or fuel pump (fuel delivery unit) from a full or partly full fuel tank, observe the following: |
WARNING | Fuel supply lines are under pressure! Wear eye protection and gloves to avoid injuries and skin contact. Before loosening hose connections, wrap a cloth around the connection. Then release pressure by carefully pulling hose off connection. |
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| Even before work commences, the extraction hose of an activated fume extraction system has to be placed in the vicinity of the assembly opening of the fuel tank to extract any escaping fumes. If no exhaust gas extraction system is available, a radial fan with a displacement greater than 15 m3/h can be used providing that motor is not in air flow. |
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| Prevent skin contact with fuel! Wear fuel-resistant gloves! |
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