Mini-Crawler Crane M A E D A Section 5 – BASIC MAINTENANCE
1/2019 MC405C-3 5-9
Assure Safe Rubber Track
When performing crane operation in a rocky
location, make sure of no damage to the rubber
track and no looseness, cracks, abrasion of bolts
and nuts. Loosen the tension of the crawler tread
more than usual.
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.
Pre- and Post-Work Inspection
Before performing crane operation in the muddy
water, rain, snow and on the seashore, always
check plugs and valves for looseness. Post-work
inspection requires check all the units for cracks
and damages and check bolts and nuts for
looseness and coming off, with the machine
washed.
Carry out early greasing. Grease the operating
pin that enters the muddy water on a daily basis.
Cautions for Working in a Dusty
Site
The following precautions should be observed
when working in a dusty site.
• Occasionally check the air cleaner for clogging.
• Clean and replace the fuel filter in a timely
manner.
• Be sure to clean the electrical parts, especially
the starter and alternator, to protect them from
dust.
Do Not Mix Oil
Never use together with different types of oil
under any circumstance.
Replace the oil entirely when replenishing a
different type of oil.
Always use Maeda genuine parts for part
replacement.
BASIC MAINTENANCE
Oil Handling
• Oil is used under extremely harsh conditions
(high temperature, high pressure) in the engine
and working device, which causes the oil to
undergo deterioration with operating time.
Always use oil that meets requirements such as
grade and operating temperature defined in the
operation manual. Be sure to perform periodic
replacement of oil irrespective of contamination
in the oil.
• Oil is equivalent to human blood. Exercise due
caution to handle oil, keeping impurities (such
as water, metal powder or dust) out of oil. Most
of mechanical failures are attributed to intrusion
of impurities.
Extra caution is required to prevent impurities
from finding their way during machine storage
and lubrication.
• Do not mix oil with other oil of different grade or
brand.
• Oil lubrication must conform to the designated
quantity of oil.
Failure to lubricate at adequate quantity can
lead to a machine failure.
• In the event that oil used in the working device
turns cloudy, potential intrusion of moisture or
air into the oil may be considered. Contact us
or our sales service agency.
• When replacing oil, always replace the relevant
filter as well.
• "ISO VG32" is adopted for a hydraulic oil
system as factory default.
Do not use any other hydraulic oil that is not
recommended by us. Failure to follow the
instruction may cause the filters to get clogged.
A minute amount of oil remaining in piping and
cylinders does not cause problems even if
mixed with other oil.
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