4.5 Operational checks
DANGER
Rotating and moving engine parts.
Risk of crushing, danger of parts of the body being caught or pulled in!
• Only run the engine at low power. Keep away from the engine's danger zone.
WARNING
High level of engine noise when the engine is running.
Risk of damage to hearing!
• Wear ear protectors.
Operational checks
Item
Measure
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 93).
Charge-air cooler
Check condensate drain (→ Page 214).
Air filter
Check signal ring position of service indicator (→ Page 217).
Replace air filter (→ Page 215), if the signal ring is completely visible in the
service indicator control window.
HP fuel pump
Check relief bores for fuel discharge (→ Page 185).
HT coolant pump
Check relief bore for oil and coolant discharge and obstructions
(→ Page 239).
Fuel prefilter (optional)
Check reading on differential pressure gauge (→ Page 200);
Drain water and contaminants (→ Page 203).
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 244).
Bilge pump (optional)
Check relief bore for oil and coolant discharge and obstructions
(→ Page 247).
76 | Operation | MS150109/01E 2015-11
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