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7.16.3 Charge-air coolant – Draining
Preconditions
☑ Engine is stopped and starting disabled.
Special tools, Material, Spare parts
Designation / Use
Part No.
Qty.
Sealing ring
(→ Spare Parts Catalog)
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.
Charge-air coolant – Draining
1.
Provide an appropriate container to drain
the coolant into.
2.
Turn breather valve of filler neck on coolant
expansion tank counterclockwise to first
stop and allow pressure to escape.
3.
Continue to turn breather valve counter‐
clockwise and remove.
4.
Draw off precipitated corrosion inhibitor oil
from the expansion tank through filler neck.
5.
Open drain valve or plug screw and drain
coolant at the LT coolant pump.
6.
Drain residual coolant at intercooler, left
and right side.
7.
Close all drain valves and install drain plugs
with new sealing rings.
8.
Close breather valve of filler neck.
M015675/05E 2011-10 | Task Description | 115
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