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 coolant expansion
tank counterclockwise until the 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 cocks and drain plugs and drain
coolant at the following points:
• at the LT cooling pump
• at the coolant lines to and from the inter‐
cooler
6.
Draining of residual coolant:
• at the intercooler
7.
Close all drain valves and install drain plugs
with new sealing rings.
8.
Set breather valve onto filler neck and close
it.
MS150064/01E 2011-11 | Task Description | 115
TIM-ID: 0000000963 - 001
