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5.2 OIL, COOLANT AND FILTER
5.2.1 Lubricant and Hydraulic Oil
Oil is used in the engine and hydraulic equipment under extremely severe conditions (high temperature,
high pressure), and deteriorates with the use.
Always use oil that matches the grade and maximum ambient temperatures recommended in the
operation and maintenance manual.
Even if the oil is not dirt, always change the oil at specified interval.
Always be careful when handling it to prevent any impurities ( water, metal particles, dirt, etc.) from
getting in. the majority of problems with machines are caused by the entry of such impurities.
Never mix oils of different grades or brands.
Always add specified amount of oil.
If the oil in the work equipments is not clear, there is probably water or air getting into the circuit. In
such cases, please contact your SUNWARD distributor.
When changing the oil, always replace the related filters at the same time. Especially when changing
engine oil filter before installation, add specified fresh and clean oil to new filter.
We recommend you have an analysis made of the oil periodically to check the condition of the machine.
Foe those who wish to use this service, please contact your SUNWARD distributor.
The hydraulic system has been filled with SAE 10W CD oil, when the machine is shipped from factory
Do not use any hydraulic oil other than those recommended by SUNWARD. Failure to do so may cause
filter clogging.
When changing hydraulic oil, clean up thoroughly the residual oil in piping and cylinder.
5.2.2 Fuel
The fuel pump is a precision instrument. If fuel containing water or dirt is used, it can not work
properly.
Be careful not to let impurities get in when storing or adding fuel.
Always use the fuel specified in the Operation and Maintenance Manual.
Fuel may congeal depending on the temperature when it is used (particularly in low temperature below
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