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
Control and display panels Check readings of operational data (speed, temperature, pressures).
Engine oil
Check engine oil level (→ Page 169)
Engine under load
Engine at nominal speed
Check engine/plant and piping for leaks, repair leaky pipes with the engine
stopped (exhaust lines and turbocharger turbine housings may be red-hot.
If the maximum exhaust temperatures are not exceeded, no restrictions in
engine operation are required)
Check for abnormal running noises and vibration.
Fuel prefilter
Check reading on differential pressure gauge to ensure that maximum
permissible value is not exceeded (→ Page 155).
Exhaust system
Check exhaust color (→ Page 79).
Intercooler
Check condensate drain(s) for water discharge and obstruction
Air filter
Check signal ring position of contamination indicator (→ Page 165).
Replace air filter (→ Page 162) if the signal ring is completely visible in the
contamination indicator control window.
Engine coolant pump
Check relief bore (→ Page 182).
Charge-air coolant pump
Check relief bore (→ Page 190).
Compressed-air system (if
installed)
Check operating pressure on pressure gauge;
Always fill compressed-air tank to max. pressure;
Drain condensate from compressed-air tank, pressure drop must not ex‐
ceed 1 bar.
72 | Operation | M015710/04E 2012-09
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