Common Comprehensive Operation and Treatment Methods of Parker PGP300 Series Gear Pump

2025-01-20

Common job one: The nuts on both ends of the piston rod of the dual output piston cylinder are too tight, causing poor concentricity. The nuts should be slightly loosened to position the piston in the static mini hydraulic station

Common job 2: Due to the frequent use of a certain section of the working stroke, the Parker PGP300 series gear pump components have poor straightness of the hydraulic station inner diameter (some have waist drum shapes), resulting in high and low pressure oil communication in the hydraulic station. The inner diameter of the hydraulic station should be repaired by boring and grinding, and a single piston should be equipped

Common job three: Excessive temperature rise and viscosity decrease of oil in the hydraulic station, leading to increased leakage; Perhaps due to numerous impurities, the piston and piston rod are stuck. Actions such as heat dissipation and cooling should be taken to replace the oil

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

Common job five: The sealing ring at the end cover of the hydraulic station is pressed too tightly or too loosely. The sealing ring should be adjusted to have a moderate degree of tightness to ensure that the piston rod can be pulled smoothly by hand without leakage

Common job six: piston rod twists and turns. The piston rod should be straightened

Common job seven: If the clearance between pistons is too large, the sealing equipment may be damaged, resulting in internal leakage. A mini hydraulic station is composed of pump equipment, integrated blocks or valve combinations, oil tanks, and electrical boxes. The functions of each component are as follows: Parker PGP020 series gear pump accessories pump equipment - equipped with motors and oil pumps, it is the power source of the hydraulic station, converting mechanical energy into hydraulic oil power energy. Integrated block - is composed of hydraulic valves and channel bodies. It regulates the direction, pressure, and flow of hydraulic oil. Valve combination - It is a plate valve installed on a vertical plate, connected to a pipe behind the plate, and has the same function as an integrated block. Fuel tank - a semi closed container welded with steel plates, equipped with oil filters, air filters, etc. It is used for storing oil and cooling and filtering oil. Electrical box - divided into two ways. A terminal board for setting external leads; One is equipped with a complete set of control appliances.