MTU 8V4000M*3 series, Руководство по эксплуатации

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8.16.4 Engine coolant – Draining
Preconditions
☑ Engine is stopped and starting disabled.
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. Provide an appropriate container to drain the coolant into.
2. Switch off preheating unit.
Engine coolant – Draining
1. Turn breather valve on expansion tank (for
engines with remote heat exchanger: the ex-
pansion tank is part of the remote cooling
system) counterclockwise up to the first stop
and allow pressure to escape.
2. Continue to turn breather valve counterclock-
wise and remove.
3. Draw off precipitated corrosion inhibitor oil
from the expansion tank through filler neck.
4. Open vent valves at the following points:
• On carrier housing and near the crankcase
breather (1)
• On seawater cooler (2) (with remote heat
exchanger, the seawater cooler is not en-
gine-mounted)
5. Open drain screws and drain engine coolant
at the following drain points:
• Elbow of HT coolant pump (3)
• Crankcase, left and right side (4)
Final steps
1. Close all open drain and vent points.
2. Set breather valve onto filler neck and close it.
MS15034/00E 2018-08 | Coolant Circuit, General, High-Temperature Circuit | 207
TIM-ID: 0000014594 - 002