Troubleshooting
Troubleshooting
NOTE: Check all other possible problems and solutions before disassembling the pump. Before you troubleshoot problems using the table below, relieve the pressure and disconnect the pump fluid line. If the pump starts when the air is turned on again, the fluid line, dispensing valve, etc. clogged.
Oil Models
Problem | Cause | Solution | |
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| Crack a fitting at the outlet of the | |
| Pump is not fully primed | pump to allow a slow leak to purge | |
| any air in the pump. Repeat start up | ||
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| procedure, page 11. | |
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| Oil leakage | Check connection and tighten. | |
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Pump runs but no fluid output | The piston valve is not seating prop- | Check and replace parts as needed. | |
erly or the piston | |||
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| Exhausted fluid supply | Refill and reprime. | |
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| The pump inlet filter is blocked | Clear the filter | |
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| The suction tube (hose) has an air | Check the connection and tighten as | |
| leak | needed. | |
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| Service pilot valve. | |
| Damaged pilot valve |
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| Lower air pressure to prevent reoc- | ||
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| currence. | |
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| Replace air valve. | |
| Damaged main air valve |
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| Lower air pressure to prevent reoc- | ||
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Pump fails to operate or stops |
| cur an ce. | |
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Inadequate air supply pressure or | Increase air supply; clear. | ||
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| restricted air lines. | ||
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| Closed or clogged dispensing valve | Open valve if closed. Clear clog if | |
| necessary. | ||
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| Clogged fluid lines, hose valves, etc. | Clear clogs. | |
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| Damaged air motor | Service air motor. | |
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| Exhausted fluid supply | Refill and reprime. | |
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Erratic or accelerated operation |
| 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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3A1334E | 23 |
