7.8.3 Engine 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.
Preparatory steps
1.
Provide a suitable container to catch the coolant.
2.
Switch off preheater, if installed.
Engine coolant – Draining
1.
Turn breather valve of filler neck on coolant
expansion tank counterclockwise to first
stop and allow pressure to escape.
2.
Continue to turn breather valve counter-
clockwise and remove.
3.
Draw off separated corrosion inhibitor oil in
expansion tank through the filler neck.
4.
Open drain plug and drain off coolant at en-
gine coolant pump (1).
102 | Task Description | MS15033/02E 2015-02
TIM-ID: 0000035572 - 002
