Safety Precautions; Safety Precautions When Working On The Fuel Supply System - Audi A8 2003 Workshop Manual

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Safety precautions

⇒ "3.1 Safety precautions when working on the fuel supply sys‐
tem", page 3
⇒ "3.2 Safety precautions when using testers and measuring in‐
struments during a road test", page 4
⇒ "3.3 Safety precautions when working on the cooling system",
page 4
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3.1 Safety precautions when working on the
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
fuel supply system
When working on the fuel system note the following warnings:
WARNING
Risk of injury - fuel system operates under pressure.
♦ Wrap a clean cloth around the connection before opening
the fuel system. Then release pressure by carefully loos‐
ening the connection.
♦ Wear protective gloves.
♦ Wear safety goggles.
The fuel can become extremely hot. This can cause injuries.
♦ In extreme cases the temperature of the fuel lines and the
fuel can be up to 100 °C after the engine is switched off.
Allow the fuel to cool down before disconnecting the lines
- danger of scalding.
♦ Wear protective gloves.
♦ Wear safety goggles.
Caution
The high-pressure pump has very close tolerances and must
not be allowed to run without fuel. To prevent this and to enable
the engine to start quickly after parts have been renewed, it is
important to observe the following:
♦ If the high-pressure pump or the components of the fuel
system between the fuel tank and the high-pressure pump
are removed or renewed, the fuel system must be bled ⇒
Rep. gr. 23 ; Bleeding fuel system after installing high-
pressure pump .
Observe the following points to prevent personal injuries and
damage to the injection and glow plug system:
♦ Persons wearing a cardiac pacemaker must at all times main‐
tain a safe distance from high-voltage components such as
injectors and gas-discharge headlights.
♦ Always switch off the ignition before connecting or discon‐
necting tester cables or electrical wiring for the injection or
glow plug system.
♦ Do not open any fuel line connections while the engine is run‐
ning.
♦ Always switch off ignition before washing engine.
8-cylinder TDI engine (4.2 ltr. 4-valve common rail), mechanics - Edition 12.2013
Audi A8 2003 ➤
3. Safety precautions
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