Doosan DX22 - Coolant Capacity; Coolant Inspections; Coolant Specifications; Cooling System

4. Regular Inspections
32
Cooling System
General Information
Coolant plays an important role in the prevention of
overheating and freezing of the engine. However, as the
engine is used over time, the antifreeze and anticorrosive
performance of coolant deteriorates. Make sure to check the
condition of coolant during daily inspections and replace it
periodically.
Engine coolant should have a mixture of 40% antifreeze. The
water used in coolant should either be clean tap water or
distilled water. Make sure to inspect coolant periodically to
maintain the correct concentration of antifreeze.
Coolant Specifications
• Amount of antifreeze in winter
Coolant Capacity
Coolant Inspections
1. Check the position of the auxiliary tank.
2. Check whether the engine and radiator are cool.
3. The coolant level should lie between the upper and lower
limits indicated on the auxiliary tank.
4. Add coolant if necessary.
5. Open the radiator cap and check the condition of the
coolant.
Measure the coolant concentration if the coolant is contam-
inated or if necessary. Replace the coolant if the concen-
tration exceeds the specified coolant concentration.
CAUTION
By maintaining the mixture ratio of coolant recom-
mended by Hyundai Doosan Infracore, engine corrosion
can be prevented effectively and the engine can be
maintained in optimum condition for long periods of
time. Using contaminated water or unspecified anti-
freeze or additives may cause critical faults in the
cooling system.
Ambient tempera-
ture (°C)
Coolant (°C)
Antifreeze (%)
-10 or more 85 15
-10 80 20
-15 73 27
-20 67 33
-25 60 40
-30 56 44
-40 50 50
Engine Model and
Product Code
Coolant capacity (L)
DX22
Approx. 24 L / 6.34 gal.
(66 L / 17.44 gal. including
the radiator)
DANGER
If the radiator cap is opened to add or replace coolant
while the engine is overheated, hot coolant will spurt out
and may cause serious burns. In the event that the radi-
ator cap must be opened, wrap it in a cloth and turn it
slowly in two steps to release the steam pressure inside.
Remove the radiator cap after all steam pressure inside
has been released.