Matters to be observed in the hydraulic system of

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Matters to be observed in the hydraulic system of the crane

the crane is powered by hydraulic pressure and is equipped with various hydraulic devices. Therefore, if the operation and maintenance rules are not strictly observed, it will not only be impossible to give full play to the due performance, but also shorten the service life of the parts. Therefore, the following items must be observed during operation

1. Before operation, the liquid level window of the oil tank should determine whether the hydraulic oil is fully filled according to the regulations. If it is lower than the specified scribed line, it must be supplemented. When refuelling, be sure to inject it through the refuelling filter, and pay great attention not to mix impure characteristics such as oil or water of different brands

2. Whether the inductive displacement sensing appliance of oil filter has sliding contact? The filter element should be checked after 250h of operation, and cleaned or replaced if necessary

3. The hydraulic oil tank should remove water and impurities from the bottom oil drain every half a month, and replace all hydraulic oil every other year (or work for 2000h). Comprehensive and multi-level energy-saving technical transformation oil should also be carried out (if the oil does not deteriorate, the spacer of the gauge rod should be stuck between the force arm and the gauge rod, and the oil change cycle can be extended appropriately). When the crane is operating in a particularly harsh environment where it is necessary to first observe the detection and commissioning of the tensile testing machine, the oil replacement cycle should be shortened accordingly

4. Various valves of the hydraulic system have been fully tested before leaving the factory, and the pressure and flow have been adjusted. Do not touch them casually

5. All kinds of machine parts, especially the devices of the hydraulic system, must not be attached with dirt. After the operation, the dust and oil stain must be removed

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