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 indicated operating parameters (speed, temperatures, pressures).
Engine under load
Engine at nominal speed
Check engine/system and lines for leak-tightness, perform maintenance
work on lines showing leakage while motor is turned off (exhaust mani‐
folds and turbocharger turbine housing may be glowing with heat. If maxi‐
mum exhaust temperatures are within the limit, restricted engine operation
is not required);
Check for abnormal running noises and vibrations.
HP pump
Check relief bore (→ Page 76).
Fuel prefilter
Check if suction-side pressure indicated at the fuel prefilter pressure
gauge is within the limit (→ Page 86).
Exhaust system
Check exhaust color (→ Page 48).
Intercooler
Check condensate drain(s) for water discharge and obstruction
Air filter
Check signal ring position of service indicator (→ Page 95);
Replace air filter (→ Page 93), if the signal ring is completely visible in the
service indicator control window.
Engine coolant pump
Check relief bore (→ Page 111).
Charge-air coolant pump
Check relief bore (→ Page 120).
Compressed-air system (if
installed)
Check operating pressure at pressure gauge.
Fill compressed-air tank to maximum pressure.
Drain condensate from compressed-air tank, pressure drop must not ex‐
ceed 1 bar.
MS150064/01E 2011-11 | Operation | 41
TIM-ID: 0000002257 - 001