MTU 12V 2000 G23, Use And Maintenance Manual

Page: 183 / 214

Cooling System, General, HT Circuit 6 – 43
6.15 Cooling System, General, HT Circuit
6.15.1 Engine coolant filling
Preconditions
• Engine is stopped and starting disabled.
• MTU Fluids and Lubricants Specification (A001061/..) is available.
Material
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.
CAUTION
Cold coolant in hot engine can cause thermal stress.
Formation of cracks in components!
• Fill / top up coolant only into cold engine.
Preparatory steps
1. Turn breather valve on coolant expansion tank
counterclockwise to first stop and allow pressure
to escape.
2. Continue to turn breather valve counterclockwise
and remove.
Engine coolant filling
1. Fill coolant through filler neck on expansion tank or through filling line until coolant level reaches lower edge of
cast-in eye or marking plate.
2. Check proper condition of breather valve and clean sealing faces, if required.
3. Set breather valve onto filler neck and close it.
Final steps
1. Start the engine and operate it at idle speed for some minutes.
2. Check coolant level (
→
Page 6 – 46) and top up, if required.
M015560 / 00E 03-05 © MTU