42
Cooling System, General, HT Circuit
Coolant-level check at filler neck:
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 counterclockwise
and remove.
3. Check coolant level (coolant must be visible at
the lower edge of the cast-in eye).
Coolant-level check at external cooler:
1. Check coolant level (coolant must be visible at
marking plate).
2. If required, top up with treated engine coolant
( Page 6 39).
3. Check proper condition of breather valve, clean
sealing faces if required.
4. Set breather valve onto filler neck and close it.
Coolant-level check by means of level sensor:
1. Switch engine control system ON and check display (coolant level is automatically monitored by the engine
control system).
2. If required, top up with treated engine coolant ( Page 6 39).
6.15.5 Engine coolant sample extraction and analysis
Preconditions
MTU Fluids and Lubricants Specification (A001061/..) is available.
Special tools
Designation / Use
Part No.
Qty.
MTU test kit
TC
M015403/00E 02-09
© MTU
www.generent.ru
Summary of Contents for 12V 4000 G 41
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