Hydraulic oil filter
1. Put off the original hydraulic oil before changing, check the oil return filter, oil absorption filter, pilot filter to see if there are iron filings or other impurities, if there are hydraulic components failure, after cleaning, cleaning system .
2. When changing hydraulic oil, all hydraulic oil filter elements (return oil filter, oil suction filter, pilot filter) must be replaced at the same time, otherwise it is equivalent to no change.
3. Identify the hydraulic oil label. Different grades and different brands of hydraulic oil are not mixed, and may react to deteriorate and produce floc. It is recommended to use the excavator to specify oil.
4. Before the refueling, the oil-absorbing filter element must be installed first. The nozzle of the oil-absorbing filter core is directly connected to the main pump. When the impurities are light, the main pump is accelerated and the pump is pumped.
5. Refueling to the standard position, the oil tank generally has an oil level gauge to see the liquid level gauge. Pay attention to the parking mode. Generally, all the cylinders are fully retracted, that is, the arm and bucket are fully extended and landed.
6. After adding the oil, pay attention to the main pump to discharge air, otherwise the light will temporarily stop the whole car, the main pump will be abnormal (air blast), and the air hole will damage the main pump. The air exhaust method is to loosen the pipe joint directly on the top of the main pump and fill it up directly.
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