MTU 12V 2000 G23, Use And Maintenance Manual

Page: 14 / 214

1 – 04 Safety
1.4 Safety precautions when working on the engine
Engine operation
When the engine is running, always wear ear protectors.
Ensure that the engine room is well ventilated.
Mop up any leaked or spilt fluids and lubricants immediately or soak up with a suitable bonding agent.
Exhaust gases from combustion engines are poisonous. Inhalation of poisonous exhaust gases is a health
hazard. The exhaust pipework must be free of leaks and discharge the gases to atmosphere.
During engine operation, do not touch battery terminals, generator terminals or cables.
Inadequate protection of electrical components can lead to electric shocks and serious injuries.
When the engine is running, never release coolant, oil, fuel, compressed-air or hydraulic lines.
Maintenance and repair
Compliance with maintenance and repair specifications is an important safety factor.
Unless expressly permitted, no maintenance or repair work must be carried out with the engine running. Secure
the engine against inadvertent starting. With electric starter, disconnect the battery. With pneumatic starter, close
main shut-off valve of compressed-air system and release pressure from compressed-air supply line. Attach sign
"Do not operate" in operating area or to control equipment. Persons not involved must keep clear.
Never attempt to rectify faults or carry out repairs if you do not have the necessary experience or special tools
required. Maintenance and repair work must only be carried out by authorized, qualified personnel.
Use only proper, calibrated tools.
Do not work on engines or components which are only held by lifting equipment or crane.
Always support these components in accordance with regulations on suitable frames or stands
before beginning any maintenance or repair work.
Before barring the engine, make sure that nobody is standing in the danger zone. After working on the engine, check
that all guards have been reinstalled and that all tools and loose components have been removed from the engine.
Fluids emerging under high pressure can penetrate clothing and skin and may cause serious injury. Before
starting work, relieve pressure in systems and H.P. lines which are to be opened.
Never bend a fuel line and do not install bent lines. Keep fuel injection lines and connections clean.
Always seal connections with caps or covers if a line is removed or opened.
During maintenance and repair work, take care not to damage the fuel lines. To tighten the connections when
installing the lines, use the correct tightening torque and ensure that all retainers and dampers are installed correctly.
Ensure that all fuel injection lines and pressurized oil lines have sufficient distance to other
components to avoid contact with them. Do not place fuel or oil lines near hot components,
except when necessary for design reasons during installation.
Elastomers (e.g. "Viton" sealing rings) are stable under normal operating conditions. When subjected
to fire or temperatures above 300 C the material degenerates, giving off hydrogen fluoride gas. The
resulting acid leads to serious burning if it contacts the skin. Do not touch elastomeric seals if they
have carbonized or resinous appearance. Wear protective gloves!
Take care with hot fluids in lines, pipes and chambers
⇒
Risk of injury!
Note cooling period for components which are heated for installation or removal
⇒
Risk of injury!
Do not touch hot components of the compressor and the exhaust system
⇒
Risk of injury!
Take special care when removing ventilation or plugs from engine. In order to avoid discharge of
highly pressurized liquids, hold a cloth over the screw or plug. It is even more dangerous if the
engine has recently been shut down, as the liquids can still be hot.
Take special care when draining hot fluids.
⇒
Risk of injury!
When draining, collect fluids in a suitable container, mop up any spilt fluids or wipe or
soak them with a suitable bonding agent.
When changing the engine oil or working on the fuel system, ensure that the engine room is adequately ventilated.
When working high on the engine, always use suitable ladders and work platforms. Make
sure components are placed on stable surfaces.
In order to prevent back injuries when lifting heavy components adults, depending on age and sex,
should only lift weights between max. 10 kg and 30 kg, therefore:
• Use lifting gear or seek assistance.
M015560 /0 0E 03-05 © MTU