Gear Pump Troubleshooting Checklist and Videos
Hydraulic and Mechanical Symptoms List
- Pump turns, but no flow
- Low capacity
- Pump will not develop sufficient pressure
- Pump develops too much pressure
- Pump no longer self-priming
- Pump won't turn/ motor stalls
- Pump runs noisy with excessive vibration
- Pump runs hot
- Frequent seal failures
- Packing has short life
- Excessive wear of the the pump internals
Common Causes of Internal Gear Pump Failure
Here are a few of the common causes of pump failure. Download the PDF checklist to get all the details and a symptom/cause chart.
- NPSHa Not Sufficient
- Air Leaks Into Pump
- Pump Has Run Dry
- Liquid Temperature Higher Than Expected
- Viscosity Higher Than Expected
- Pump Running Too Fast
- Abrasives Incorrect Rotation Incorrect Head Place
- Wrong ClearanceWorn Internals
- Tight Packing Gland
- Improper Seal Installation
- Relief Valve Setting
- Relief Valve Reversed
- Material Corrosion
- Drive Problems
- Vacuum and Pressure Gauges
