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Pump Troubleshooting Guide: Oil Delivery Faults, Causes, and Solutions
ZH-100A Hand-Operated Fuel Metering Pump
This guide summarizes common oil pump delivery issues, their likely causes, and recommended corrective actions. It is intended for technicians and operators responsible for maintaining oil transfer and metering systems.
1. No Oil Delivery
Possible causes:
- Air leakage or blockage in the inlet pipeline
Recommended solutions:
- Inspect the inlet pipeline, tighten connections, and remove any blockage
2. No Oil Delivery
Possible causes:
- Three-way valve installed in the wrong direction or excessively worn
Recommended solutions:
- Remove the oil meter, reinstall the valve in the correct orientation, or replace it if worn
3. No Oil Delivery
Possible causes:
- Piston ring wear leading to loss of sealing
Recommended solutions:
- Replace the worn piston rings
4. Delivered Oil Quantity Not Accurate
Possible causes:
- Flow meter accuracy degraded or calibration drift
Recommended solutions:
- Adjust the flow meter by opening the regulator, or replace the meter if necessary
Conclusion
Accurate diagnosis of oil delivery faults ensures safe and reliable pump operation. Regular inspection of valves, inlet piping, piston components, and flow meters is essential to maintaining system accuracy and performance. For unresolved issues, consult a qualified service technician or equipment manufact