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7.15.2 Engine coolant – Level check
Preconditions
☑ Engine is stopped and starting disabled.
☑ MTU Fluids and Lubricants Specifications (A001061/..) are available.
WARNING
Coolant is hot and under pressure.
Risk of injury and scalding!
• Let the engine cool down.
• Wear protective clothing, gloves, and goggles / safety mask.
Checking coolant level at filler neck:
1.
Turn breather valve of coolant expansion tank counterclockwise until the first stop and allow pressure to es-
cape.
2.
Continue to turn breather valve counterclockwise and remove.
3.
Check coolant level (coolant must be visible at the bottom edge of the cast-in eye of the filler neck).
Checking coolant level at exter-
nal cooler:
1.
Check coolant level (coolant must be visible
at marker plate).
2.
Top up coolant if necessary (→ Page 129).
3.
Check and clean breather valve.
4.
Position breather valve on filler neck and
close.
Coolant-level check by means of level sensor:
1.
Switch on engine control system and check readings on the display.
2.
Top up coolant if necessary (→ Page 129).
126 | Coolant Circuit, General, High-Temperature Circuit | MS150119/01E 2016-02
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