MTU 12V4000C Series Operating Instructions Manual page 11

Take special care when removing ventilation or plug screws from the product.
Ensure that O-rings are not installed in a slanted/twisted condition.
Carry out appropriate cleaning procedures to clean and inspect components requiring special cleanness
(e.g. components carrying oil, fuel, or air).
Note cooling time for components which are heated for installation or removal (risk of burning).
Ensure that all retainers and dampers are installed correctly.
Remove any accumulation of condensate after assembling chilled components. Coat the components with a
suitable corrosion inhibitor as necessary.
Lines
Keep fuel injection lines and connections clean.
Always seal connections with caps or covers if a line is removed or opened.
Fit new seals when re-installing lines.
Never bend lines and avoid damaging lines, particularly the fuel lines.
Ensure that all fuel injection and pressurized oil lines are installed with enough clearance to prevent contact
with other components. Do not place fuel or oil lines near hot components.
Miscellaneous
Wear a breathing mask offering protection against soot and dust (filter class P2) when working on exhaust
components. Wear protective gloves and goggles for protection against acidic condensate.
Do not touch elastomeric seals (e.g. Viton sealing rings) with your bare hands if they have a carbonized or
resinous appearance.
Elastomer components (e.g. engine mounts, damping elements, couplings and V-belts) must not be painted.
Only install them after painting the engine or mask them prior to painting.
The following applies to starters with copper-beryllium alloy pinions:
• Wear a respirator mask (filter class P3). 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 device.
• Observe the safety data sheet.
Safety regulations after performing maintenance and repair work
Before barring the engine, make sure that nobody is standing in the danger zone of the product.
Check that all access ports/apertures which have been opened to facilitate working are closed again.
Check that all safety equipment has been installed and that all tools and loose parts have been removed
(especially the barring tool).
Ensure that no unattached parts have been left in/on the product (e.g. including rags and cable straps).
Ensure that the grounding system is properly connected.
Welding work
Welding operations on the product or mounted units are not permitted. Cover the product when welding in
its vicinity.
Before starting welding work:
• Switch off the power supply master switch.
• Disconnect the battery cables or actuate the battery isolating switch.
• Separate the electrical ground of electronic equipment from the ground of the unit.
No other maintenance or repair work must be carried out in the vicinity of the product while welding is in
progress. There is a risk of explosion or fire due to oil vapors or highly flammable fluids and lubricants.
Do not use product as ground terminal.
MS150049/04E 2017-04 | Safety | 11