Doosan DX700LC Operation And Maintenance Manual page 280

During Storage
• Once a month, start the engine and follow the
"Hydraulic Oil Warm-up" procedures listed in this
manual.
NOTE:
Remove all seals from the machine (i.e.
crankcase and hydraulic breathers, engine
air intake, fuel tank vent lines, etc.).
Operate hydraulic functions for traveling, swing and
digging two or three times for lubrication after
"Hydraulic Oil Warm-up". Coat all the moving parts
and surfaces of the components with a new oil film
after operating. At the same time, charge the battery.
Rotate track to prevent track seizing. "
• Every 90 days, use a hydrometer to measure the
protection of the coolant. Refer to the antifreeze/
coolant protection chart to determine protection of the
cooling system. Add coolant as required.
After Storage
• When operating the work equipment, remove all
grease from the hydraulic cylinder rods.
• Add grease and oil at all lubrication points.
• Adjust fan and alternator belt tension.
• Connect the charged battery.
• Check condition of all hoses and connections.
• Check the levels of engine oil, fuel, coolant and
hydraulic circuit oil. If there is water in the oil, change
all the oil.
• Change all filter elements.
• When starting the engine after long-term storage,
follow the "Hydraulic Oil Warm-up" procedures listed
in this manual.
Inspection, Maintenance and Adjustment
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OP001123