7.10.3 Engine coolant – Draining
Preconditions
☑ Engine is stopped and starting disabled.
Special tools, Material, Spare parts
Designation / Use
Part No.
Qty.
Engine oil
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 an appropriate container to drain the coolant into.
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 precipitated corrosion inhibitor oil
from the expansion tank through filler neck.
4.
Remove drain plug (1) and drain coolant.
5.
Insert drain plug with new sealing ring and use torque wrench to tighten to specified tightening torque.
Name
Size
Type
Lubricant
Value/Standard
Drain plug
Tightening torque
(Engine oil)
70 Nm
6.
Place breather valve on filler neck and close.
98 | Task Description | MS15022/02E 2012-04
TIM-ID: 0000014576 - 001
