Hydraulic oil in the form of a straight axis swashplate pressure cylinder power plugs from the sucking-two oil types. Pressure for large liquid-type oil pump are using air pressure tank pump sales, also supplemented with liquid-type oil pump oil with the body of the cylinder to provide pressure oil pump suction inlet from. Self-absorbing capacity pump is strong, no external oil supply. Found cylinder speed drops or stuffy that shall hydraulic pump parts, hydraulic pump repair the car, check the impeller edge now whether it was like scraping injury, internal gear pump gap is too large. For self-absorbing fluid, oil pump piston cylindrical pressure tank shall not be less than the lower limit of the oil standard sufficient enough to maintain security, the number of hydraulic oil. Cleanliness of the hydraulic oil pump pressure fluid, high service life is longer. Troubleshooting of the hydraulic motor (1) is not enough output torque ① of the housing bore cylindrical roller fit too loose or worn after use into the oil chamber of the pressure caused by oil leaking back oil chamber (oil chamber) pumps, internal leakage increases, it should re-processing by brush or roller coupled. ② rotor blade root round wear, internal leakage volume. ③ dirt and roller blades stuck. ④ between the roller and the blade shaft due to poor precision and assembly precision, the roller friction between the outer and the root circle blade large, the film is cut through, resulting in thousands of friction. Hydraulic testing, hydraulic pumps, hydraulic preferred by the Jinan Jing Jing Chong Chong Hydraulic Machinery Limited. 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 constantly improving innovative ideas will lead crystal create hydraulic and you hand into the brilliant, for a better future!