Inspection, Maintenance and Adjustment
4-77
DX380LC-7
Coolant - Change
NOTE:
Do not mix ethylene glycol and propylene glycol
antifreeze together. Refer to "Engine Cooling
System" and "Types of Antifreeze" page for further
details.
1.
Slowly open the radiator cap and the surge tank cap
(Figure 116) to allow any pressure to escape.
NOTE:
See "Fluid Capacities" on page 4-18. for
capacity.
NOTE:
Some models may have no surge tank or
radiator cap. This instruction is only applicable
to those with the cap.
WARNING
AVOID DEATH OR SERIOUS INJURY
Allow the engine to cool before releasing the radiator cap.
Make sure to loosen the cap slowly to release any
remaining pressure.
Radiator cleaning is performed while the engine is running.
Take extreme caution when working on or near a running
engine. Make sure to lock out and tag the controls notifying
personnel that service work is being performed.
Do not remove radiator cap unless it is required. Check the
coolant level in the coolant recovery tank.
NOTICE
Do not mix up the antifreeze from different makers. Mixing
the two compounds can cause generation of foreign
material which can damage the system. Therefore, it Is
recommended to use authorized DOOSAN genuine
antifreeze solution.
To achieve the best cooling performance, keep the mixing
ratio of the antifreeze and water by 50 : 50. Using water only
can corrode the coolant circuit.
In bitterly cold working conditions, the customer should
frequently check the performance of the coolant for
appropriateness for the weather and then determine change
cycle of the coolant.
DS2103952
Figure 116