Hydraulic system is 6 ton and 8 ton crane key component, whose maintenance related to automotive quality hydraulic winch performance and service life, based on planetary gearbox, set There are a variety of hydraulic devices. Therefore, if not actually comply with operation and maintenance of rules, not only can not fully play its due performance, will shorten the life of parts. So, during operation, must comply with the following practical rules.

1, before operation, by the hydraulic oil tank level window to determine whether the requirement to add a little, below the engraved line, it must be supplemented. Refueling, be sure to go through the filter into the fuel, and is very careful not to sneak into different grades of oil or water impure qualities.

2, the filter cartridge after 250h at work, should be checked, cleaned or replaced when necessary.

3, the hydraulic oil tank should be every two weeks removed from the bottom of the drain water and impurities in the mouth once, and every year (or work full-2000h) replacing all the hydraulic oil (oil did not occur in case of deterioration, may be extended drain intervals). When the crane in the use of environment, especially when operating under adverse conditions, oil change intervals should be reduced accordingly.

4, hydraulic oil through long-term work, will produce some condensation of water and sediment should be discharged once a month on a regular basis. Condensate should stop working at night after roller, unscrew the drain plug at the bottom of the tank, so to see the clean and dirty oil out of oil so far. Then installed the drain plug and filling fresh hydraulic oil.

5, no matter how long working hours, hydraulic oil should be updated at least once a year to prevent deterioration of oil pollution in the hydraulic system. Oil should be preceded by starting the engine is running, the hydraulic oil warm hot in order to facilitate discharge.

6, a variety of valves in the hydraulic system has been fully tested before leaving the factory, and have adjusted the pressure and flow, must not lightly touched.

7, a variety of parts, especially hydraulic system devices are attached to avoid dirt. After the operation, must take the dirt, grease cleaned.

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