MTU 12V4000C*5 series, Operating Instructions Manual

Page: 255 / 305

8.22.2 Actuators – Visual inspection and test
Preconditions
☑ Engine is stopped and starting disabled.
WARNING
Actuation mechanism in the exhaust and intake area closes automatically.
Risk of crushing hands!
• To carry out the teach-in routine, keep clear of the safety zone of the actuation mechanism in the
intake and exhaust area.
• Switch off the operating voltage of the engine governor before starting the mechanical test.
• Wear protective goggles.
WARNING
Hot components/surfaces.
Risk of burns!
• Allow the engine to cool down to below 50 °C before beginning work.
• Wear suitable protective equipment/thermal gloves.
• Avoid unprotected contact with hot surfaces.
NOTICE
Carry out the calibration learning run for a functional check of the servomotor. Overwriting of stop val-
ues through already existing wear.
Exceeding of emission values and engine damage are possible!
• Only carry out the calibration learning run if the servomotor of the flap is connected to the ECU for
the first time or a coupling rod was been replaced.
Checking actuators visually
Note
Actuators must not be interchanged or exchanged from other engines - even for test purposes. Always use
new actuators.
Item Findings Measure
Corrugated pipe (1) Damaged, holes or cracks. Replace
Coolant connections (2, 3) Traces of coolant leaks. Replace
Output shaft (4) Damaged Replace
MS15041/03E 2018-08 | Accessories for (Electronic) Engine Governor / Control System | 253
TIM-ID: 0000044543 - 007