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Replacement of hydraulic oil in two boom hydraulic cylinder of excavator. Knowledge of hydraulic oil replacement

The replacement of hydraulic oil in the two arm cylinder: after lifting the large arm to the highest point, (only allowing for this single action) the engine is extinguished, (at this time the two arm cylinder rod is extended all out) from the multiple valves and the two arm oil cylinder with the tubing of the rod cavity. After the oil is put in the pipe, the pipe is reconnected. Then disconnect the two arm no rod cavity oil pipe from the back of the big arm, and seal up the already opened multi way valve and the two arm rod less cavity oil pipe by using oil plugging.

The spare oil cylinder is ready to connect the hydraulic oil from the two arm cylinder, start the engine, recover the two arm cylinder, and the engine stall. After connecting the disassembled oil pipe, the engine is restarted, and the two arm cylinder rod is telescopic several times. After putting the two arms on the vertical ground angle, the engine is turned off.

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