Clean Dust Net In Front Of Oil Cooler And Intercooler; Check Cooling System And Refill As Required - Doosan DX140R Operation & Maintenance Manual

Clean Dust Net in Front of Oil Cooler and
Intercooler
IMPORTANT
If running excavator in dusty area, check dust net everyday
and clean it if dirty.
AVOID DEATH OR SERIOUS INJURY
If using compressed air or water to clean the dust net, make
sure that proper eye protection is worn.
1. Loosen the wing bolt(s) and remove dust net.
2. Clean with compressed air or water.

Check Cooling System and Refill As Required

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. Observe
the coolant level in the coolant recovery tank.
NOTE: Do not mix ethylene glycol and propylene glycol
antifreeze together.
1. When the engine is cold, remove the radiator cap and
check the coolant level inside the radiator. Do not rely on
the level of coolant in the coolant recovery tank. Refill
radiator as required. Refer to coolant concentration table.
(See page 4-74)
2. Check to make sure that the coolant transfer line from the
coolant recovery tank to the radiator is free and clear of
obstructions, or not pinched.
3. Observe the level of coolant in the coolant recovery tank.
The normal cold engine fluid level must be between
"FULL" and "LOW" marks on tank.
4. If the coolant is below the "LOW" mark, add genuine part of
50% concentration coolant to the tank.
Inspection, Maintenance and Adjustment
4-22
WARNING
WARNING
Figure 29
Figure 30
FG006307
FG014423
DX140R/DX140LCR