Operating instructions

Cooling System, LT Circuit   49
WARNING
Engine noise above 85 dB (A).
Risk of damage to hearing!
 Wear ear protectors.
Charge-air coolant sample extraction and analysis
1. With the engine running, open drain valve.
2. Flush sample-extraction point by draining approx.
1 liter coolant.
3. Drain approx. 1 liter coolant into a clean
container.
4. Close drain valve.
5. Using the equipment and chemicals of the MTU
test kit, examine coolant for:
 antifreeze concentration;
 corrosion inhibitor concentration;
 pH value.
6. Change charge-air coolant according to
the coolant operating times specified in the
MTU Fluids and Lubricants Specification
(
Page 6  47).
6.16.6 LT cooling pump  relief bore check
DANGER
Unguarded rotating and moving engine components.
Risk of serious injury  danger to life!
 Take special care when working on a running engine.
WARNING
Engine noise above 85 dB (A).
Risk of damage to hearing!
 Wear ear protectors.
LT cooling pump  relief bore check
1. Check relief bore for oil and water discharge.
2. Stop engine (
Page 3  5)and disable engine
start.
3. Clean the relief bore with a wire if it is dirty.
 Permissible water discharge: up to 10 drops
per hour;
 Permissible oil discharge: up to 5 drops
per hour.
4. If discharge exceeds the specified limits: Contact
Service.
M015403/00E 02-09 © MTU
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