MTU C23R Betriebsanleitung Seite 124

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7.15.3 Draining engine coolant
Preconditions
Engine shut down and secured against being restarted.
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.
Preparatory steps
1. Have a suitable container ready to catch the coolant.
2. Switch off preheating unit.
Draining engine coolant
1. Turn pressure cap on coolant expansion tank counterclockwise until the first stop and allow pressure to
escape.
2. Continue to turn pressure cap counterclockwise and remove.
3. Draw off separated corrosion inhibitor fluid in expansion tank through the filler neck.
4. Open drain valves and/or drain plugs and
drain coolant at the following points:
On the preheating unit
On the coolant pump elbow (arrowed)
On the crankcase, left and right sides
(arrowed)
124 | Task Description | M015695/03E 2013-03
TIM-ID: 0000006739 - 006
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