7.15.7 Engine coolant – Sample extraction and analysis
Preconditions
☑ Engine is stopped and starting disabled.
☑ MTU Fluids and Lubricants Specification (A001061/..) is available.
Special tools, Material, Spare parts
Designation / Use
Part No.
Qty.
MTU test kit
5605892099/00
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 on coolant expansion tank (→ Page 112)counterclockwise until 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 the (→ MTU Fluids and Lu‐
bricants Specifications A001061/..)(→ Page 119).
122 | Task Description | MS150061/04E 2012-07
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