Some principles to remember when troubleshooting problems with your hydraulic pump.
- Hydraulic pumps create flow-not pressure
- Resistance to flow creates pressure
- Pressure determines cylinder force and motor torque
- Flow determines cylinder or motor speed
- Fluid under pressure always takes path of least resistance
- When liquid moves from an area of high pressure to an area of low pressure (pressure drop)without doing useful work, heat is generated
- Hydraulic fluids are compressible-not highly compressible, but compressible nonetheless