Cooling system
OPM 300 en-GB 70
© Scania CV AB 2020, Sweden
Refilling coolant with coolant trolley
1. Open the expansion tank cap.
2. Connect the coolant trolley to the filler nip-
ple in the cylinder block. See illustration.
3. Fill with coolant using coolant trolley to
pump up to the maximum level of the expan-
sion tank.
4. Disconnect the coolant trolley.
5. Start the engine and run it at idling for 15
minutes.
It is very important that the engine is idling. En-
gine overspeed could damage the coolant pump
shaft seal, which leads to coolant leakage.
6. Switch off the engine and fill with coolant to
the maximum level through the expansion
tank.
Air pockets may still be left in the cooling sys-
tem. These will disappear after the engine has
been operated for a period of time. Therefore, the
coolant may need topping up at a later stage.
After filling, it may be good to start the engine
and check that no coolant leakage occurs.
Tool
Description Illustration
Coolant trolley
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