Talking about the correct maintenance method of the hydraulic system of construction machinery

Time of issue:

2021-10-21

Talking about the correct maintenance method of the hydraulic system of construction machinery The hydraulic system of construction machinery is composed of three parts: hydraulic oil tank, hydraulic pump device and hydraulic control device. The hydraulic oil tank is equipped with an air filter, an oil filter, a liquid level indicator and a cleaning hole. Hydraulic pump devices include different types of hydraulic pumps, drive motors and couplings between them. The hydraulic control device refers to the various valve components and their connecting bodies that make up the hydraulic system. Hydraulic oil plays the role of transmitting pressure, lubricating, cooling, and sealing in the hydraulic oil system. Inappropriate selection of hydraulic oil is the main reason for the early failure and durability of the hydraulic system. The hydraulic oil should be selected according to the brand specified in the random "Instruction Manual". When a substitute oil is needed in special circumstances, the performance should be the same as the original brand. Different brands of hydraulic oil cannot be mixed to prevent chemical reactions and performance changes of the hydraulic oil. Dark brown, milky white, and odorous hydraulic oil is deteriorating oil and cannot be used. 2. Precautions for regular maintenance of the crimping machine 1. When crimping, place the joint in the center of the mold as much as possible, and do not press on the hexagonal nut. 2. Prevent tools and other foreign objects from entering the press head. 3. After each work is completed, the eight mold bases must be opened to the maximum extent, so that the spring can be in an open state and the spring can be maintained, and the oil cylinder is also in a pressure relief state to extend the life of the oil seal. 2.1 250h inspection and maintenance Check the attachments on the filter screen, such as excessive metal powder, which often indicates the wear of the oil pump or the pulling of the oil cylinder. In this regard, it must be diagnosed and taken corresponding measures before it can be turned on. If the filter screen is damaged or dirt accumulated, it should be replaced in time, and the hydraulic oil should be replaced at the same time if necessary. 2.2 500h inspection and maintenance After 500 hours of operation of the construction machinery, the filter element should be replaced regardless of the condition of the filter element, because it is difficult to detect the small damage of the filter element with the naked eye, and the filter element should be replaced appropriately in advance if it is operated at high temperature for a long time.

Hydraulic oil plays the role of transmitting pressure, lubricating, cooling, and sealing in the hydraulic oil system. Inappropriate selection of hydraulic oil is the main reason for the early failure and durability of the hydraulic system. The hydraulic oil should be selected according to the brand specified in the random "Instruction Manual". When a substitute oil is needed in special circumstances, the performance should be the same as the original brand. Different brands of hydraulic oil cannot be mixed to prevent chemical reactions and performance changes of the hydraulic oil. Dark brown, milky white, and odorous hydraulic oil is deteriorating oil and cannot be used.
2. Precautions for regular maintenance of the crimping machine

1. When crimping, place the joint in the center of the mold as much as possible, and do not press on the hexagonal nut.

2. Prevent tools and other foreign objects from entering the press head.

3. After each work is completed, the eight mold bases must be opened to the maximum extent, so that the spring can be in an open state and the spring can be maintained, and the oil cylinder is also in a pressure relief state to extend the life of the oil seal.

2.1 250h inspection and maintenance

Check the attachments on the filter screen, such as excessive metal powder, which often indicates the wear of the oil pump or the pulling of the oil cylinder. In this regard, it must be diagnosed and taken corresponding measures before it can be turned on. If the filter screen is damaged or dirt accumulated, it should be replaced in time, and the hydraulic oil should be replaced at the same time if necessary.

2.2 500h inspection and maintenance

After 500 hours of operation of the construction machinery, the filter element should be replaced regardless of the condition of the filter element, because it is difficult to detect the small damage of the filter element with the naked eye, and the filter element should be replaced appropriately in advance if it is operated at high temperature for a long time.

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