3-49
［
3.15.5
PREVENTION OF DUST AND MOISTURE
Store the machine in a dry indoor location. If you place the machine outside unavoidably, lay lumbers on a flat
ground and cover the machine with a sheet. Especially, cover the muffler, hydraulic oil tank breather, fuel tank cap,
and swing motor level gauge.
To protect the exposed part of the rod, fully retract the arm and bucket cylinders, be sure to place the bucket on the
ground and chock the crawlers.
3.15.6
PERIODICAL LUBRICATING OPERATION (DURING STORAGE)
Once a month, start the engine to move the machine and also perform lubricating operation to supply lubricant to
every kind of parts of the machine. If the oil film shortage occurs on parts and rust is formed on parts, it may cause
abnormal wear at the next operation.
• Check the engine oil level and coolant level before starting the engine. Refill engine oil or coolant if its level is
low.
• Wipe off the anti-rust oil from the cylinder rods. After the lubricating operation, apply the anti-rust oil again.
• After starting the engine, fully warm-up the machine.
• If the machine is stored indoors, adequate ventilation is required during warming-up.
Lubricating operation
1.
Slowly extend and retract each cylinder several times and circulate the hydraulic oil in all operation circuits.
2.
Also perform swing and traveling slowly to circulate the hydraulic oil.
3.15.7
TREATMENT AFTER LONG-TERM STORAGE
When starting to use the machine after a long-term suspension, perform the following treatments.
• Loosen the plugs of the travel reduction unit and swing reduction unit and remove the dust and water which
deposited during the long-term storage.
• Lubricant gets deteriorated while the machine is not in use. Use extreme caution when starting to use the
machine at the next time.
• Check the deterioration of the hydraulic hoses carefully after the long-term storage. Replace the deteriorated
hoses.
• Wipe off the anti-rust oil from the cylinder rods.
• Refill oil and grease to all necessary parts.
• Check the engine oil level and coolant level before starting the engine. Refill engine oil or coolant if its level is
low.
• After starting the engine, fully warm-up the machine and repeat the traveling, swing and digging operations
several times to prevent hydraulic oil film shortage.
• If the machine is stored indoors, adequate ventilation is required during warming-up.
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