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.
Draining charge-air coolant
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 valves and drain plugs and
drain coolant at the following points:
• Charge-air coolant pump
• Thermostat housing
6.
Draining of residual coolant:
• Intercooler
7.
Close all drain valves and install drain plugs
with new sealing rings.
8.
Set breather valve onto filler neck and close
it.
128 | Task Description | MS150054/02E 2012-02
TIM-ID: 0000014855 - 001
