Engine Coolant - Filling - MTU 12V4000M73 series Operating Instructions Manual

7.16.5 Engine coolant – Filling
Preconditions
☑ Engine is cold.
☑ Engine is stopped and starting disabled.
☑ MTU Fluids and Lubricants Specifications (A001061/..) are available.
Special tools, Material, Spare parts
Designation / Use
Engine coolant
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.
NOTICE
Cold coolant in hot engine can cause thermal stress.
Possible formation of cracks in the engine!
• Fill / top up coolant only into cold engine.
Variant 1: Filling coolant
through filler neck on expansion
tank
1. Turn valve cover (1) on expansion tank on the
left to the first lock and release pressure.
2. Continue to turn valve cover counterclock-
wise and remove.
232 | Coolant System, General, High-Temperature Circuit | MS150045/03E 2018-08
Part No. Qty.