Variable pump and oil sensitive expensive repairs hydraulic pumps, the first manipulation and routine maintenance should note the following: oiling the pump: 啔 before the oil pump, fuel injection from the fuel inlet into the pump until it filled up. If you start the pump before oiling, it may be due to insufficient lubrication failure. Pump can not be reversed: Note electrical wiring, reverse may damage the pump. Low-speed low-pressure test run: Repeat start and shut down the motor, the pump and the suction is released in the air. Ten percent of the input pressure and flow, open radio station forward and backward movement of the hydraulic pump repair, so that the exhaust gas flow and pressure valve. Ten minutes after running the pump maintenance, such as oil system no abnormal sound, to boot. If you stop using the machine again after a period of use, also need such a boot. Hydraulic oil used: hydraulic oil hydraulic oil viscosity selection 20-200Cstnian recommended 30-50cST high viscosity hydraulic oil. When the oil temperature is below 5 degrees, to deal with the hydraulic oil for heating. Cleanliness of hydraulic oil should be kept in NAS10 below should be cleaned every three months back to the oil filter cartridge, to keep the oil flow and clean. Maintaining the oil level in the oil ruler bit more: when the oil level is too low, the hydraulic oil is contained in the air release is not sufficient, so that a greater noise and damage the pump. Three pairs and a search Vice rub repair (1) cylinder loaded copper inlay sleeve body, can be used to replace copper sleeve for repair. A first column group at the first piston rod diameter trimmed to uniform size, and then the outside diameter of more than 1000 # light throwing sand paper. (2) melting cylinder type square guitar body and copper jacket. (3) work surface table '(4) cylinder bore mining process technology with no material body cylinder sleeve copper materials are mostly ductile iron pump, non-crystalline state in the cylinder wall on the film or coating preparation system. Because the cylinder bore wall with special special this pledge, so in order to form a hard - hard fruit such as blindness friction pairing. Vice grinding cylinder bore, the cylinder bore wall which research material sheet surface layer off the table, more friction will change the structure of the layer properties to be obliterated. Friction deputy, if forced to use, it will grind dramatically as the temperature of the surface wipe rise, the plunger rod and cylinder Fasheng glued. Also in the column prepared stuffed noodle bar table a unique film with a coating containing less wear + wearable + lubricating wear group that can wipe deputy actual power or hard - soft pairing, once people become coated layer changed to it undermines the friction material deputy special best match some repair this reason, special piston pump, it is necessary to a professional repair shop. (E source of hydraulic pumps | hydraulic pumps | hydraulic preferred by the Jinan Jing Jing Chong Chong Hydraulic Machinery Co., Ltd. provides Jinan Jing Chong Hydraulic Machinery Co., Ltd. (www.jnjcyy.com) (www.jnjcyy.com) strong, credible. In Jinan, Shandong mining machinery industry has accumulated a large number of loyal customers. The company better work attitude and continuously improve innovative ideas to create a hydraulic lead crystal into the brilliant and you work for a better future!