4.6 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 Measure
Engine under load
Engine at nominal speed
Visually inspect engine for leaks and general condition;
Check for abnormal running noises and vibration;
Check exhaust color (→ Page 54).
Fuel prefilter Check fuel prefilter contamination indicator for max. admissible value
(→ Page 83).
Drain water and contaminants (→ Page 84).
Air filter Check signal ring position of contamination indicator (→ Page 92).
HT coolant pump Check relief bore for oil and coolant discharge and contamination
(→ Page 110).
Raw water pump Check relief bore for oil and water discharge and contamination
(→ Page 113).
Intercooler Check condensate drain (if applicable) (→ Page 89).
Engine oil Check engine oil level (→ Page 94).
44 | Operation | M015700/06E 2012-06
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