Maeda MC815C, Operation Manual, Page: 258 / 426

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2. BASIC MAINTENANCE
[1] 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.
Use the lubricant compliant to the CJ-4 (API category), E-6 (ACEA category) or DH-2 (JASO
category) standard.
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 entering 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 agent.
• 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 small amount of oil remaining in piping and cylinders does not cause problems even when
mixed with other oil.
[2] FUEL HANDLING
• The fuel pump is precision equipment that becomes inoperative if fuel containing moisture or
impurities is used.
Extra caution is required to prevent impurities from entering during machine storage and
lubrication.
• Do not remove the strainer when replenishing fuel.
• Always use oil that meets the operating temperature defined in the operation manual.
• Ensure that the fuel tank is filled up after finishing daily work to prevent condensation of the
humid air inside the fuel tank that will result in intrusion of moisture.
• Drain deposits and water out of the fuel tank before starting the engine or approximately 10
minutes after fuel replenishment.
• The air should be released from the circuit when the machine runs out of fuel or when the fuel
filter is replaced.
• Clean the tank and fuel system if any foreign substances enter the fuel tank.
• Use the lubricant compliant to the EN590, ASTM D975 or JIS K2204 standard.
• For biofuel, use the oil compliant to the EN14214 or EN590, ASTM D6751 or D7467 or JIS
K2390 standard.
• Use the fuel with sulfur content of less than 15 ppm (mass).
• Use natrium and zinc free fuel.
• Do not use kerosene.
• Do not fuel that is mixed with kerosene.