MTU 12V4000M*3 series, Operating Instructions Manual

Page: 101 / 283

5.7 Operational checks
DANGER
Components are moving or rotating.
Risk of crushing, danger of parts of the body being caught or pulled in!
• Operate the engine at low load only. Keep clear of the danger zone of the engine.
WARNING
High level of engine noise when the engine is running.
Risk of damage to hearing!
• Wear ear protectors.
Operational checks
Item Task
Engine under load
Engine at nominal speed Check engine visually for leaks and general condition; Check air pipework be-
tween air filter and exhaust turbocharger for leaks and damage.
Check for abnormal running noise, vibration, and exhaust color (→ Page 115).
Air filter Check signal ring position of service indicator (→ Page 209).
Replace air filter (→ Page 207), if the signal ring is completely visible in the
service indicator control window.
HP fuel pump Check relief bores for fuel discharge (→ Page 173).
HT coolant pump Check relief bore for oil and coolant discharge and obstructions
(→ Page 232).
Fuel prefilter (optional) Check reading on differential pressure gage (→ Page 189);
Drain water and contaminants (→ Page 192).
Raw water pump (only on
engines with engine-mount-
ed or optional remote heat
exchanger) Check relief bore for oil and coolant discharge and obstructions
(→ Page 239).
Bilge pump (optional) Check relief bore for oil and coolant discharge and obstructions
(→ Page 241).
MS15035/00E 2018-08 | Operation | 99
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