Safety Regulations For Maintenance And Repair Work - MTU 12 V 2000 P12 Operating Instructions Manual

1.4 Safety regulations for maintenance and repair work

Safety regulations prior to maintenance and repair work
Have maintenance and repair work carried out by qualified and authorized personnel only.
Allow the engine or plant to cool down to less than 50°C before starting maintenance work (risk of explo‐
sion of oil vapors, fluids and lubricants, risk of burning).
Before starting work, relieve pressure in systems and compressed-air lines which are to be opened. Use
suitable containers of adequate capacity to catch fluids and lubricants.
When changing the engine oil or working on the fuel system, ensure that the engine room is adequately
ventilated.
Never carry out maintenance and repair work with the engine running.
Carry out function checks on a running engine only if expressly permitted to do so.
Secure the engine or plant against accidental starting.
Disconnect the battery. Lock circuit breakers.
Close the main valve on the compressed-air system and vent the compressed-air line when pneumatic
starters are fitted.
Disconnect the control equipment from the engine or plant.
The following additional instructions apply to starters with beryllium copper pinion:
• Breathing protection of filter class P2 must be applied during maintenance work to avoid health haz‐
ards caused by the beryllium-containing pinion. Do not blow out the interior of the flywheel housing or
the starter with compressed air. Clean the flywheel housing inside with a class H dust extraction de‐
vice as an additional measure.
Safety regulations during maintenance and repair work
Take special care when removing ventilation or plug screws from the engine or plant. Cover the screw or
plug with a rag to prevent fluids escaping under pressure.
Take care when draining hot fluids and lubricants (risk of burning).
Use only proper and, if applicable, calibrated tools. Observe the specified tightening torques during as‐
sembly/disassembly.
Carry out work only on assemblies or plants which are properly secured.
Never use lines for climbing.
Keep fuel injection lines and connections clean.
Always seal connections with caps or covers if a line is removed or opened.
Take care not to damage lines, in particular fuel lines, during maintenance and repair work.
Ensure that all retainers and dampers are installed correctly.
Ensure that all fuel injection and pressurized oil lines are installed with enough clearance to prevent con‐
tact with other components. Do not place fuel or oil lines near hot components.
Do not touch elastomeric seals if they have carbonized or resinous appearance unless hands are proper‐
ly protected.
Note cooling time for components which are heated for installation or removal (risk of burning).
When working high on the equipment, always use suitable ladders and work platforms. Make sure com‐
ponents are placed on stable surfaces.
Observe special cleanness when conducting maintenance and repair work on the engine or plant. After
completion of maintenance and repair work, make sure that no loose objects are in/on the assembly or
plant (e.g. cloths and cable ties)
8 | Safety | MS150025/02E 2012-10