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 separated corrosion inhibitor oil in
expansion tank through the filler neck.
5.
Open drain valves and/or drain plugs and
drain coolant at the following points:
• at the LT coolant pump
• at the LT thermostat housing.
6.
Draining of residual coolant:
• at the intercooler
7.
Close all drain valves and screw in drain
plugs with new sealing rings.
8.
Place breather valve on filler neck and
close.
186 | Task Description | M015710/04E 2012-09
TIM-ID: 0000000941 - 003
