Troubleshooting
Problem | Cause | Solution | |
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| Replace gasket. | |
| Gasket is leaking |
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Intermittent air leakage coming from | Lower air pressure to prevent reoc- | ||
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| currence. | ||
behind the air manifold. Pump con- |
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tinues to function normally. |
| Clear obstruction. | |
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| Thermal relief inlet check relief pas- |
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| sage in inlet housing is plugged |
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| Replace inlet filter. | |
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| Worn or damaged piston | Service air motor / valve | |
| valve cup. | ||
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Continuous air exhaust |
| Replace valve gasket. | |
| Damaged valve gasket |
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| Lower air pressure to prevent reoc- | ||
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| currence. | |
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| Held open or worn intake valve | Clear; service. | |
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| Held open or worn pump piston | Clear; service. | |
| packings | ||
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| The muffler is partially blocked | Clear muffler. | |
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| The inlet filter is partially blocked | Clear the filter. | |
Pump operates but output is low |
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Inadequate air supply pressure or | Increase air supply; clear restric- | ||
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| restricted air lines | tions. | |
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| Partially closed or clogged pilot | Open valves. Clear clog as neces- | |
| valves | sary. | |
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| Partially clogged fluid line, hose, | Clear clog as necessary. | |
| valves, etc. | ||
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Oil leakage through air exhausts | Throat seal is damaged | Replace throat seal | |
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24 | 3A1334E |