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
Action
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 79).
Air filter
Check signal ring position of service indicator (→ Page 91).
Replace air filter (→ Page 89), if the signal ring is completely visible in the
service indicator control window.
Engine coolant pump
Check relief bore for oil and coolant discharge and contamination
(→ Page 101).
Engine oil
Check engine oil level (→ Page 93)
72 | Operation | MS15022/02E 2012-04
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