Safety Precautions When Working on Fuel Supply System

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 clearance issues:
Route lines of all types (e.g. for fuel, hydraulic, EVAP canister system, coolant and refrigerant, brake fluid, vacuum) and electrical wiring so that the original path is followed.
To prevent damage to the lines, make sure there is sufficient clearance to all moving or hot components.





Fuel pump is activated with switching on ignition and by door contact switch of drivers door. Therefore for reasons of safety, connector -arrow- must be disconnected from fuel delivery unit before opening fuel supply system, if the battery is not disconnected.

Always observe the following when removing and installing fuel gauge sensor or Fuel Pump (FP) from full or partially filled fuel tanks.

Before starting work, switch on exhaust extraction system and place an extraction hose close to installation opening of fuel tank to extract escaping fuel fumes. If no exhaust extraction system is available, a radial fan (as long as motor is not in air flow) with a displacement greater than 15 m 3 /h can be used.

Prevent fuel from contacting skin! Wear fuel-resistant gloves!

CAUTION! When doing any repair work, especially in the engine compartment, pay attention to the following due to clearance issues:
Route lines of all types (e.g. for fuel, hydraulic, EVAP canister system, coolant and refrigerant, brake fluid, vacuum) and electrical wiring so that the original path is followed.
To prevent damage to the lines, make sure there is sufficient clearance to all moving or hot components.

If special testing equipment is required during road test, note the following:

CAUTION! Test equipment must always be secured to the rear seat and operated from there by a second person.
If test and measuring instruments are operated from the front passengers seat and the vehicle is involved in an accident, there is a possibility that the person sitting in this seat may receive serious injuries when the airbag is triggered.