G80XW/XF, G115XW/XF, G150XW/XF, G200XW/XF - 50HZ
OPERATION & MAINTENANCE MANUAL
75
G100XW/XF, G135 XW/XF, G170XW/XF, G225XW/XF - 60Hz
DISCHARGING THE COOLANT
The coolant can be drained as follows:
1. Ensure that the engine and radiator are cooled.
2. Open the radiator cap.
WARNING
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
sufficiently.
Mark and separately manage the containers for
storing coolant from beverage containers to avoid
confusion. If coolant is ingested, see a doctor
immediately.
3. Loosen the drain valve located under the radiator to
drain the coolant.
4. Disassemble the coolant drain plug of the cylinder
block, and drain it to a container.
5.
Drain cooling water in the oil cooler.
CHARGING THE COOLANT
1. Ensure that the engine is cooled.
2. Open the radiator cap.
DANGER
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
sufficiently.
Mark and separately manage the containers for
storing coolant from beverage containers to avoid
confusion. If coolant is ingested, see a doctor
immediately.
3. Pour in the coolant in slowly.
CAUTION
Be careful not to let foreign substances flow into the
engine when replenishing coolant.
4. Ensure that there is no air in the cooling system.
5. After checking the coolant level when the engine is
warmed up, replenish coolant if necessary.
DANGER
If the engine is hot, wrap the coolant pressure cap
with a cloth upon opening it so that the steam may be
discharged. This can prevent burning from the hot
steam coming out of the cap inlet.
CAUTION
Do not mix antifreezes from different manufacturers.
Do not mix the coolant with different concentrations.
Do not add antirust which is not recommended by
Doosan.
As insufficient coolant concentration may cause
corrosion or freezing, alternatively, an excessive
concentration may degrade the cooling performance.
Mix coolant with 40% antifreeze to prevent corrosion.
EA5O4002
Drain Valve
EA9O4003