Troubleshooting
WARNING
To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 7.
Before servicing this equipment always make sure to Relieve the Pressure.
Note: Check all possible problems and solutions before disassembling the pump.
Problem | Cause | Solution |
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Pump fails to operate. | Inadequate air supply pressure or | Increase air supply; clear |
| restricted air lines |
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| Closed or clogged valves | Open; clean |
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| Clogged fluid lines, hoses, valves, | Clear* |
| etc. |
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| Damaged air motor | Service air motor |
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| Exhausted fluid supply | Refill and reprime, or flush |
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Continuous air exhaust | Worn or damaged air motor gasket, | Service air motor |
| packing, seal, etc. |
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Erratic pump operation | Exhausted fluid supply | Refill and reprime, or flush |
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| Held open or worn intake valve or | Clear; service |
| piston packings |
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Pump operates, but output low on | Held open or worn piston or packings | Clear; service |
upstroke |
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Pump operates, but output low on | Held open or worn intake valve | Clear; service |
downstroke |
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Pump operates, but output low on | Inadequate air supply or restricted air | Increase air supply; clear |
both strokes | lines |
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| Closed or clogged valves | Open; clean |
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| Exhausted fluid supply | Refill and reprime, or flush |
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| Clogged fluid lines, hoses, valves, | Clear* |
| etc. |
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| Loose packing nut or worn packings | Tighten; replace |
*Follow the Pressure Relief Procedure, and disconnect the fluid line. If the pump starts when the air is turned back on, the fluid line, hose, valve, etc. was clogged.
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