7.16.7 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
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 of filler neck on coolant
expansion tank counterclockwise to first
stop and allow pressure to escape.
2. Continue to turn breather valve counter‐
clockwise 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 in‐
to 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. Position breather valve on filler neck and
close.
7. Change engine coolant according to the
coolant operating times specified in (→ MTU
Fluids and Lubricants Specifications
A001061/..)(→ Page 133).
136 | Task Description | MW15407/14E 2012-02
TIM-ID: 0000006772 - 002
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