4-3
[13] CAUTIONS FOR WELD REPAIR
• Power off the machine. (Turn OFF the start switch)
• Do not continuously apply 200V or greater.
• Ground the machine within 1 meter from the welding point.
• Be sure to disconnect the connectors of the moment limiting display unit, and moment limiting converter.
• Remove the negative terminal (-) of the battery.
• Make sure no sealing or bearing is present between the welding point and the grounding point.
Potential damage to sealing may occur due to sparks if disregarded.
• Do not ground around the boom pin or the hydraulic cylinder.
Potential damage to a plated section may occur due to sparks if disregarded.
[14] KEEP FROM FLAME
Always clean the parts with noncombustible cleaning agent or light oil.
Keep the machine away from flames when using light oil.
[15] KEEP THE ATTACHMENT SURFACE CLEAN
Be sure to clean the attachment surface after removing a part to which the O-ring and gasket sealing are
attached.
Replace the part with a new one with the O-ring and gasket reattached.
[16] EMPTY YOUR POCKETS
Always empty your pockets before performing inspection and maintenance of the machine in a downward
direction with the cover opened.
[17] ASSURE SAFE TRACK
When performing crane operation in a rocky location, make sure of no damage to the track and no
looseness, cracks, abrasion of bolts and nuts. Loosen the tension of the crawler tread more than usual.
[18] CAUTIONS FOR MACHINE WASH
• Do not direct a jet of steam to the electrical parts and connector.
• Keep the operation panel dry.
• Wash the machine with clean cloth, rinsing off dirt and dust.
[19] PRE- AND POST-WORK INSPECTION
Before performing crane operation in muddy water, rain, snow and on the seashore, always check plugs
and valves for looseness. Post-work inspection requires checking all the units for cracks and damage and
check bolts and nuts for looseness or coming off, with the machine washed.
Carry out early greasing. Grease the operating pins that enter muddy water on a daily basis.
[20] CAUTIONS FOR WORKING IN A DUSTY SITE
The following precautions should be observed when working in a dusty site.
• For oil check or change, move the machine to some other clean place to avoid contamination.
• Occasionally check the air cleaner for clogging.
• Occasionally check and clean the radiator core to prevent clogging it.
• Clean or replace the fuel filter more frequently.
• Be sure to clean the electrical parts, especially the starter and alternator, to protect them from dust.
[21] DO NOT MIX OIL
Never use together with different types of oil under any circumstance.
Replace the oil completely when replenishing with a different type of oil.
Always use Maeda genuine parts for part replacement.
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