Doosan P185WDOU-T4F, Operation And Maintenance Manual

Page: 73 / 107

ENGINE OPERATION Operation & Maintenance Manual
Replacement of Coolant
Never open the radiator cap while the engine is overheated. If the
radiator cap is opened while the engine is overheated, hot water will
spurt out and may cause serious burns. Open the radiator cap after
ensuring that the engine has been cooled suff ciently.
Mark and separately manage the containers for storing coolant from
beverage containers to avoid confusion. If coolant is ingested, see a
doctor immediately.
Be careful not to get coolant on any belts or electric apparatus when
replacing the coolant.
1. Make sure that engine and radiator are cooled.
2. Place an appropriate size container in front of the coolant drain plug.
3. Remove the radiator cap.
4. Unplug the coolant drain plug of the radiator and drain coolant.
5. After completing coolant drain, connect the coolant drain plug.
6. Drain the coolant from the coolant supplementary tank and cleanse the tank.
7. Fill the radiator inlet with water and install radiator cap.
Note: Slowly pour coolant in to let the air be discharged from radiator and press the
hose connected to it to discharge the air inside.
8. Start the engine to let the cooling fan rotate 2 or 3 times. When the engine is warmed
up, increase the engine RPM two or three times.
9. Shut down engine and wait until engine is cooled.
10. Remove the radiator drain plug and drain water.
11. Repeat steps 1–8 until the drained water becomes clear.
12. Press the hose connected to the radiator to discharge the air from inside of the
radiator and slowly fill the radiator with the coolant at the specified mixing ratio to let
the air be discharged from the radiator.
Note: Use recommended genuine antifreeze.
75