Wenzhou Prance Hydraulic Equipment Co., Ltd
Size a hydraulic reservoir breather from net tank exchange, two-way airflow and allowable pressure drop. Includes a cylinder example and maintenance checks.
Understand cam-ring pressure compensation, variable delivery, standby behavior and replacement limits. Distinguish a variable vane pump from the fixed T6 range.
Calculate hydraulic solenoid coil duty cycle and distinguish continuous duty, maximum on-time, PWM and ambient-temperature limits before selecting a coil.
Compare speed and torque before changing hydraulic motor displacement, and check load, pilot supply, braking and switching limits before a two-speed shift.
Understand remote pump pressure compensation, pilot-line losses, drain back pressure, control limits, and safe diagnosis without generic adjustment instructions.
Separate proportional-valve command, measured spool feedback, supply faults, and hydraulic response before replacing a feedback valve.
Diagnose hydraulic motor speed droop by comparing delivered inlet flow, shaft speed, load pressure, temperature, and bypass paths.
Distinguish minimum pump displacement, delivery, leakage, and control flow before diagnosing standby heating or adjusting a compensator.
Measure proportional valve hysteresis with matched rising and falling command curves, controlled conditions, and explicit normalization.
Compare continuous, intermittent, and peak motor torque using the actual load cycle, duration, speed, pressure, and shaft configuration.
Choose and install a hydraulic pump flow meter without confusing range, pressure drop, branch flow, or temperature effects with pump condition.
Explain hydraulic valve spool metering notches, opening area, flow gain and low-flow behavior without confusing notch shape with spool overlap or feedback.