4.7 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 67).
Fuel prefilter Check fuel prefilter contamination indicator for max. admissible value
(→ Page 106).
Drain water and contaminants (→ Page 107).
Air filter Check signal ring position of contamination indicator (→ Page 115).
HT coolant pump Check relief bore for oil and coolant discharge and contamination
(→ Page 136).
Raw water pump Check relief bore for oil and water discharge and contamination
(→ Page 138).
Intercooler Check condensate drain (if applicable) (→ Page 112).
Engine oil Check engine oil level (→ Page 119).
MW15407/14E 2012-02 | Operation | 57
TIM-ID: 0000002274 - 005
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