After Shutting Down The Engine - MTU 16V4000M73 Operating Instructions Manual

5.17 After shutting down the engine

Preconditions
☑ MTU Fluids and Lubricants Specifications (A001061/..) are available.
NOTICE
Engine coolant with inadequate freeze protection. Water remaining in the pressure sensors freezes at
temperatures below 0 °C.
Risk of sensor damage!
• Remove pressure sensors and shake off residual water.
After shutting down the engine
Item
Coolant circuit
Raw water
Engine control system
Air intake and exhaust sys-
tem
Engine
78 | Operation | MS150123/01E 2017-05
Measure
Drain coolant (→ Page 244) if:
• freezing temperatures are to be expected and the engine is to remain out
of service for an extended period and if no antifreeze has been added to
the coolant;
• the engine room is not heated;
• the coolant is not kept at a suitable temperature;
• the antifreeze concentration is insufficient for the engine-room tempera-
ture;
• antifreeze concentration is 50 % and engine-room temperature is below
-40 °C.
Drain
• if freezing temperatures are expected and the engine is to remain out of
service for a longer period.
Switch off.
Out-of-service-period > 1 week:
• Seal engine's air and exhaust sides.
Out-of-service-period > 1 month:
• Carry out engine preservation (→ MTU Preservation and Represervation
Specifications A001070/..)