Operating instructions

6.16.3 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 a suitable receptacle to catch the
coolant.
2. Turn breather valve on coolant expansion
tank counterclockwise to 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. Set breather valve onto filler neck and close
it.
MS150093/01E 2012-06 | Task Description | 157
TIM-ID: 0000019865 - 001