1. once improvement the elbow tank, clean the water filter of every pump.
2. Clean the fuel tank and filter the hydraulic tank among 1-2 months when the instrumentation is employed.
3. If it's found that the forward and retreat is unsuccessful, 1st check whether or not the magnet valve is functioning, like the magnet valve is functioning usually, so check whether or not the sequence valve 6X3, the escape valve YF-L20H4 or the unidirectional unloading valve 4HD3 is cursed impurities. (This development is typically simple to happen once the device is employed.) If there's a stuck development, remove it with fuel or diesel and set up it.
4. every joint of the hydraulic ram station is provided with oil-resistant rubber protection ring. If the protection ring is broken or unseaworthy, it ought to get replaced in time.
5. Check the fasteners in every half to form them tight.