The control of whether a hydraulic system works properly and whether there is a malfunction in the hydraulic system is done in 3 stages.
1. Hydraulic System Diagram
Each hydraulic system has a diagram showing how it works. In this diagram, the pressure, flow rate, hydraulic hose and hydraulic pipe diameters required for the ideal operation of the hydraulic system of all equipment are specified. In order to see the performance losses of a hydraulic system, first evaluations are made on the hydraulic system scheme.
2. Flow Rate, Pressure and Pollution Measurement
In order to check whether the hydraulic system works at the values found in the hydraulic scheme, the compatibility with the hydraulic system scheme is checked by measuring all values with the flow rate tester, pressure gauge set and particle counter device. If the desired value can not be reached in the hydraulic system scheme, the settings of the measuring equipment may have been changed or malfunctioned. With test equipment, defective hydraulic equipment should be detected and the malfunction should be resolved.
3. Leakage and Wear Control in the Hydraulic System
Oil leaks in the hydraulic system give us warnings about malfunctions, if the hydraulic oil leak is in the hydraulic cylinder, the hydraulic cylinder shaft surface or internal leakage is detected.
After all checks, the amount of particles in the oil is measured by the hydraulic oil analysis in the hydraulic system. A standard hydraulic system should not exceed the oil cleanliness level of NAS 8. Faults and sudden stops are common in all hydraulic systems above the NAS 8 cleanliness level.
You can find the details for hydraulic system cleaning in the link below.