Troubleshooting
Troubleshooting
Problem | Cause | Solution |
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The pump fails to operate. | Dirty or worn air motor. | Clean, service. |
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| Inadequate air supply or | Clean lines or increase the air |
| restricted lines. | supply (see Technical Data). |
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| Closed or clogged air valves. | Open or clear the valves. |
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| Clogged fluid hose or valve. | Clear the hose or valves. |
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| Worn or damaged valves or | Service the valves or seals. |
| seals. |
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The pump operates, but the | Clogged fluid hose or valve. | Clear the hose or valves. |
output is low on both strokes. |
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Low or empty fluid supply. | Refill the fluid supply and rep- | |
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| rime the pump. |
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| Worn or damaged valves or | Service the valves or seals. |
| seals. |
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The pump operates, but the | Held open or worn intake | Clear or service the valve. |
output is low on the down- | valve. |
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stroke. |
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Worn or damaged valves or | Service the valves or seals. | |
| seals. |
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The pump operates, but the | Held open or worn piston | Clear or service the valve. |
output is low on the upstroke. | valve. |
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| Worn or damaged valves or | Service the valves or seals. |
| seals. |
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Erratic or accelerated opera- | Low or empty fluid supply. | Refill the fluid supply and rep- |
tion. |
| rime the pump. |
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| Broken air motor compression | Replace the spring. |
| spring. |
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Pump slowly moves after fluid | Clogged or dirty intake valve | Clean ball and seat. |
shutoff in downstroke. | check ball. |
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| Worn or damaged valves or | Install repair kit. |
| seats. |
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Pump slowly moves after fluid | Clogged or dirty lower piston | Clean ball and seat. |
shutoff in upstroke. | ball or seat. |
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| Worn or damaged valves or | Install repair kit. |
| seats. |
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312766N | 21 |
