Yuchai U35, Руководство оператора

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5-4
Maintenance outline
Lubricating oil
● Oil that meets the grade and temperature given in the "Oil Selection Table" of this manual
should be used. Within the specified time, even though the oil is not dirty, it must be
replaced.
● Pay attention to preventing impurities (water, metal particles, dust, etc.) from entering the
lubricating oil. Most problems with the machine are caused by impurities entered.
● Do not mix lubricants of different grades or brands together.
● Refill according to the prescribed amount of the oil. Too much or too little oil can cause
malfunctions.
● When changing the oil, it is necessary to replace the relevant filter element, especially
when replacing the oil filter element. Before installation, the new filter element must be filled
with oil with cleanliness as regulated.
Fuel
● When storing or adding fuel, special care should be taken not to allow impurities to enter.
● Be sure to use the fuel specified in the "Oil Selection Table" of this manual. Fuel should be
selected based on the ambient temperature, otherwise it can easily solidify at low
temperatures (especially when it is below -15 °C (5 °F)). Therefore, it is necessary to replace
fuel that matches the ambient temperature.
● To prevent moisture in the air from condensing and forming water in the fuel tank, the fuel
tank should be filled up after daily work.
● Before starting the engine, or after adding fuel for 10 minutes, drain the sediment and
water from the fuel tank.
● If the engine has run out of fuel or if the filter element has been replaced, the air in the oil
circuit must be exhausted.
Grease
● Lubricating grease is used to prevent twisting and noise at the connection.
● If any component appears inflexible or produces noise after prolonged use, lubricating
grease should be added.
● Wipe off the old grease that is squeezed out during the lubrication process.
● Any old grease visible should be wiped off as sand or dust sticking to the grease can cause
wear on rotating parts.
Coolant
● Antifreeze shall be used in any weather.
● Check the coolant level as regulated and refill as necessary. Coolant insufficiency will
cause engine overheat.
● According to the ambient temperature, mix the coolant and antifreeze in an appropriate
ratio.
● Do not add coolant when the engine is overheated and not yet cooled.