warning AUDI A4 1998 B5 / 1.G Fuel Supply System Servicing Guidelines Workshop Manual
Page 1 of 8
20-1
Fuel supply system, servicing
guidelines
Safety precautions
WARNING!
When removing and installing fuel pump or
fuel gauge sensor from a partially filled fuel
tank:
BEFORE beginning work, place exhaust
extraction system suction pipe near fuel tank
opening so escaping fuel vapors can be
immediately sucked off.
If no exhaust extraction system is available,
use a radial fan (with motor located outside
airflow) with volume of at least 9 cfm.
Wear fuel-resistant gloves whenever working
with open parts of the fuel system.
Be sure the ignition is switched off when:
Disconnecting fuel injection system wiring.
Connecting or disconnecting test equipment
leads.
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11/18/2002 htt
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20-2
WARNING!
Fire hazard! Do NOT have anything in the
area that can ignite gasoline!
Fuel system is under pressure! Before
opening, place clean cloths around the
connections to be opened. Carefully loosen
the connections to relieve pressure.
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Page 7 of 8
20-5
Observe following points before working on the
fuel supply system
CAUTION!
Obtain the radio Anti-theft code from the
customer before disconnecting the Battery
Ground strap.
With ignition switched OFF, disconnect Battery
Ground strap.
Open the fuel filler cap briefly and close
again.
Observe the following precautions when
removing or installing components from a filled or
partially filled fuel tank.
WARNING!
Empty the fuel tank before removal! If it is not
empty, the weight and sloshing fuel could
lead to injury, component damage or possible
fuel spillage.
Fuel tank must not be filled more than
1/3
maximum.
Reduce fuel quantity using fuel cart, if
Pa
ge 7 of 8 Fuel su
pp
ly system, servicin
g guidelines
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
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yp
e=re
pair&id=AUDI.B5.GE04.20.1