7.16.5 Engine coolant ‒ Filling
Preconditions
☑ Engine is stopped and starting disabled.
☑ MTU Fluids and Lubricants Specifications (A001061/..) are available.
Special tools, Material, Spare parts
Designation / Use Part No. Qty.
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.
Engine coolant ‒ Filling
1. Turn breather valve of filler neck on coolant
expansion tank counterclockwise to first stop
and allow pressure to escape.
2. Continue to turn breather valve counterclock-
wise and remove.
3. Remove plug (required only for first fill).
4. Pour coolant into engine until coolant level
reaches lower edge of cast-in eye of filler
neck.
5. Install plug screw.
6. Check proper condition of breather valve and
clean sealing faces.
7. Place breather valve on filler neck and close.
8. Start the engine and operate it at idle speed
for some minutes.
9. Check coolant level (→ Page 205).
208 | Coolant Circuit, General, High-Temperature Circuit | MS150031/06E 2016-010
TIM-ID: 0000006726 - 003
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