Komatsu H75051, Operation & Maintenance Manual

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PRECAUTIONS FOR LONG-TERM STORAGE
PREPARATION FOR LONG-TERM STORAGE
When putting the machine in storage for a long time (more than one month), do as follows.
• Clean and wash all parts of the machine and store it indoors. If the machine has to be stored outdoors,
select a level ground and cover the machine with waterproof sheet.
• Fill up the fuel tank. This prevents dew condensation.
• Grease the machine and change the oil before storage.
• Fill up DEF tank (Except cold weather condition).
If the inside dries up, urea is deposited and it may cause failures in component operation.
• Coat the exposed portion of the hydraulic cylinder piston rod with grease.
• After turning the starting switch to OFF position, check that the system operating lamp is not lit. Then set
the battery disconnect switch to OFF position and remove the key. When storing the battery, cover it.
For the operation of the battery disconnect switch, see “BATTERY DISCONNECT SWITCH (3-120)”.
• Lock the work equipment (the pilot lamp in the switch lights up).
• To prevent rust, fill the cooling circuit with Non-Amine Engine Coolant (AF-NAC) to give a density of at least
30% for the engine coolant.
MAINTENANCE DURING LONG-TERM STORAGE
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WARNING
If it is necessary to perform the rust-prevention operation while the machine is indoors, open the doors
and windows to improve ventilation and prevent gas poisoning.
• During storage, operate and move the machine for a short distance once a month so that a new film of oil
will coat moving parts. At the same time, charge the battery as well.
• When operating the work equipment, wipe off all the grease from the hydraulic cylinder rods.
• If the machine is equipped with an air conditioner, operate the air conditioner for 3 to 5 minutes once a
month to lubricate all parts of the air conditioner compressor. Always run the engine at low idle when doing
this. In addition, check the refrigerant level twice a year.
STARTING MACHINE AFTER LONG-TERM STORAGE
NOTICE
If the machine has been stored without performing the monthly rust-prevention operation, consult your
Komatsu distributor before using it.
When using the machine after long-term storage, perform the following items before using it.
• Wipe off the grease from the hydraulic cylinder rods.
• Add oil and grease at all lubrication points.
• When the machine is stored for a long period, moisture in the air will mix with the oil. Check the oil before
and after starting the engine. If there is water in the oil, change all the oil.
• Check for rust on engine pulley and abnormality on belt.
If the surface of pulley where contacting with the belt is covered with too much rust, remove them with wire
brush.
• Insert the battery disconnect switch key and turn it to ON position.
• If the machine is stored for a long period with the battery disconnect switch OFF or the battery terminal dis-
connected, the clock information and radio tuning information may be lost. In this case, set them again. For
detail, see “CLOCK ADJUSTMENT”.
• If the machine has been stored for more than 2 months, perform the following procedure.
OPERATION PRECAUTIONS FOR LONG-TERM STORAGE
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