Common thing a: double out of the piston cylinder piston rod at both ends of the nut holds too tight, make it work together bad, should loosen the nut slightly, so that the piston is located in of course static mini hydraulic station

Common thing two: because often use a certain part of the working stroke, parker PGP300 series gear pump accessories cause straight line in the hydraulic station is not good (partial waist drum shape), resulting in high and low pressure oil connection in the hydraulic station. Should be boring and grinding repair hydraulic station diameter, with a single piston

Common things three: hydraulic station oil temperature rise is too high, viscosity decreases, so that leakage growth; Or because impurities flood the piston and piston rod. Measures such as cooling and cooling should be adopted to replace the oil

Common things four: hydraulic station moving parts between the gap is too large. Parker PGP031 series gear pump accessories should reduce tacit gap

Common five things: hydraulic station end cover seal ring is pressed too tight or too loose. The sealing ring should be adjusted and controlled to have a moderate tightness, so as to ensure that the piston rod can be pulled smoothly by hand without leakage

Six common things: piston rod bending. The piston rod should be straightened

Common things seven: piston tacit understanding gap is too large or seal installation damage, resulting in internal leakage. Mini hydraulic station is composed of pump device, integrated block or valve assembly, oil tank, electrical box combination. The functions of the components are as follows: parker PGP020 series gear pump accessories pump device -- equipped with motor and oil pump, it is the power source of the hydraulic station, the mechanical energy into the hydraulic oil power. Integrated block -- is composed of hydraulic valve and channel body. It applies direction, pressure and flow regulation to hydraulic oil. Valve combination - plate valve installed on the vertical plate, plate after the pipe connection, and the same function as the integrated block. Oil tank -- is a steel plate welding semi-closed container, also equipped with oil screen, air filter, etc., it is used to store oil, oil cooling filtration. Electrical box -- in two forms. The utility model relates to a terminal board which is provided with an external lead; One is equipped with a full set of control appliances.