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
Control and display panels
Check readings of operational data (speed, temperature, pressures).
Engine oil
Check engine oil level (→ Page 102).
Engine operation
Check engine visually for leaks and general condition;
Check for abnormal running noise, exhaust discoloration and vibrations
Battery-charging generator
Check battery-charging generator for contamination, clean as necessa‐
Air filter
Check differential pressure indication at gauge (if fitted).
Exhaust system
Check exhaust color (→ Page 40).
Fuel prefilter
Drain water and contaminants at the drain cock of fuel prefilter (if fitted)
(→ Page 88)
Check reading on vacuum gauge of fuel prefilter (if fitted).
Intercooler
Check condensate drain(s) for water discharge and obstruction
Engine coolant pump
Check relief bore (→ Page 123).
Charge-air coolant pump
Check relief bore (→ Page 132).
34 | Operation | MS150054/02E 2012-02
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