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Servo valve failure analysis and troubleshooting: a breakdown of the fault phenomenon: servo valve does not move. Analysis of the reasons: two coils in a coil connected. Remedy: Correct the polarity of the reverse winding. Fault Category II Symptom: Servo valve does not move. Analysis: into the oil or back to the oil is not connected, or into, back to the oil reversed. Remedy: Correctly connected to the oil passage. Fault category three symptoms: Servo valve output is too large or not continuous control. Analysis of the reason: the polarity of the coil is inverted into a positive feedback. Remedy: According to the requirements of the coil polarity. Fault Category 4 Symptom: Servo valve unresponsive. Analysis: Oil is dirty, filter clogging, affecting the control level of oil. Remedy: Cleaning the system, cleaning, replace the filter. Fault Category Five Failure phenomenon: the bottom of the oil spill. Analysis: The bottom seal is damaged. Remedy: Replace the bottom seal.
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