Vane pump common troubleshooting - Pump output flow is insufficient or even not completely discharged 1. Motor is not steering 2. Tank level is too low 3. Suction line or filter is clogged 4. Motor speed is too low 5. Oil viscosity is too high 6. With oil pan end wear 7. Blade in the stator inner surface of the poor contact 8. Blade in the vane slot stuck or move inflexible 9. Connection screw loose 10. Relief valve failure 1. Correct the steering 2. Oil to the oil line 3. Dredge the suction pipe, cleaning the filter 4. The speed reached above the minimum speed of the hydraulic pump 5. Check the oil quality, replace the viscosity of the hydraulic oil or increase the oil temperature 6. Grinding the end or replace the oil pan 7. Repair Grinding the contact surface or replace the blade 8. Check one by one, to move the inflexible blade re-allocation 9. Proper tightening 10. Adjustment, removal, cleaning relief valve
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