8.16.7 Engine coolant – Sample extraction and analysis
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.
MTU test kit
F6798833 1
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.
Engine coolant sample extraction and analysis
1. Turn breather valve of coolant expansion tank (→ Page 140) counterclockwise until the first stop and allow
pressure to escape.
2. Continue to turn breather valve counterclockwise and remove.
3. Draw off precipitated corrosion inhibitor oil from expansion tank and dispose of oil.
4. Draw off approx. 1 liter coolant and drain into a clean container.
5. Using the equipment and chemicals from the MTU test kit, examine coolant for:
• antifreeze concentration;
• corrosion inhibitor concentration;
• pH value.
6. Fit breather valve and close it.
7. Change engine coolant according to the coolant operating times specified in (→ MTU Fluids and Lubricants
Specifications A001061/..) (→ Page 147).
150 | Coolant Circuit, General, High-Temperature Circuit | M015650/06E 2018-05
TIM-ID: 0000006774 - 003
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