4.5 Operational checks
DANGER
Unguarded rotating and moving engine components.
Risk of serious injury – danger to life!
• Take special care when working on a running engine.
WARNING
Engine noise above 85 dB (A).
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 102).
Charge-air cooler
Check condenstae drain (→ Page 173).
Air filter
Check signal ring position of service indicator (→ Page 176).
Replace air filter (→ Page 174), if the signal ring is completely visible in the
service indicator control window.
HP fuel pump
Check relief bores for fuel discharge (→ Page 145).
HT coolant pump
Check relief bore for oil and coolant discharge and obstructions
(→ Page 201).
Fuel prefilter (optional)
Check reading on differential pressure gauge (→ Page 176);
Drain water and contaminants (→ Page 159).
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 207).
Bilge pump (optional)
Check relief bore for oil and coolant discharge and obstructions
(→ Page 209).
MS150066/02E 2013-02 | Operation | 89
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