1. Common Causes of Abnormal Power Operation
Hydraulic Pump Motor Not Working at All: Wear and tear on the microswitch due to prolonged use; loose power plug due to vibration; aging and failure of the motor starting capacitor; insufficient hydraulic oil causing pump blockage; impurities stuck in the pump, jamming the rotor.
Hydraulic Pump Running but Cylinder Not Moving: Insufficient hydraulic oil after consumption; pressure relief valve not closed after use; pressure regulating valve adjusted too loosely; oil filter clogged with plastic debris; quick coupling blocked or poorly sealed, causing pressure loss.
Cylinder Stuttering, Crawling, and Vibrating: Air has entered the hydraulic oil and is not expelled; worn and aged cylinder seals causing internal leakage; insufficient oil in the frame guide rails; impurities jamming moving parts.
2. Common Causes of Abnormal Pressure
Insufficient Pressure, Inability to Connect: Insufficient hydraulic oil due to leakage; impurities stuck in the relief valve preventing pressure build-up; wear and internal leakage in the hydraulic pump due to prolonged use, causing pressure loss; pipeline leaks causing insufficient oil pressure.
Frequent pressure drops and unstable pressure: Impurities stuck in the overflow valve core, resulting in a poor seal; aging and leakage of seals causing continuous oil pressure loss; aging and inaccurate pressure gauge readings.
Pressure cannot be released, pressure regulation fails: The pressure regulating valve core is stuck; long-term wear leads to excessive valve core clearance, preventing normal pressure control.
3. Common causes of leakage failures:
Quick connector oil leakage: Long-term pressure causing aging and deformation of the gasket; frequent insertion and removal of the connector causing wear and poor sealing.
High-pressure oil pipe leakage and bulging: Long-term bending and outdoor exposure causing aging of the oil pipe and cracking of the rubber layer; long-term excessive oil pressure causing bulging of the oil pipe.
Oil cylinder leakage: Long-term reciprocating motion causing wear and aging of the oil cylinder seal/sealing ring, resulting in seal failure.
Valve block mating surface leakage: Long-term vibration causing loose connecting screws; aging and failure of the original sealant, resulting in a poor seal.
