Troubleshooting
Troubleshooting
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| 1. Relieve the pressure. | |
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| 2. Check all possible problems and solutions before | |
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| disassembling pump. | |
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| PROBLEM |
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| CAUSE | SOLUTION | ||||
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Pump output low on both strokes. | Restricted air or hydraulic supply lines. | Clear any obstructions; be sure all shutoff | ||||||||
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| valve are open; increase pressure, but do |
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| not exceed maximum working pressure. |
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| Exhausted fluid supply. | Refill and reprime pump. | |||
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| Clogged fluid outlet line, valves, etc. | Clear. | |||
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| Worn piston packing. | Replace. See lower manual 311690. | |||
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Pump output low on only one stroke. | Held open or worn ball check valves. | Check and repair. | ||||||||
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| Worn piston packings. | Replace. See lower manual 311690. | |||
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Pump operates erratically. | Exhausted fluid supply. | Refill and reprime pump. | ||||||||
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| Held open or worn ball check valves. | Check and repair. | |||
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| Worn piston packing. | Replace. See lower manual 311690. | |||
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| Excessive hydraulic fluid supply pressure | See Viscount I Plus motor manual | |||
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| to Viscount motor. | 308330 or Viscount II manual 308048. | |||
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Pump will not operate. | Restricted air or hydraulic supply lines. | Clear any obstructions; be sure all shut | ||||||||
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| off valves are open; increase pressure, |
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| but do not exceed maximum working |
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| pressure. |
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| Exhausted fluid supply. | Refill and reprime pump. | |||
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| Clogged fluid outlet line, valves, etc. | Clear. | |||
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| Damaged air motor or hydraulic motor. | See air motor manual 311238 or hydrau- | |||
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| lic motor manual 308330 or 308048. |
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| Fluid dried on piston rod. | Disassemble and clean pump. See lower | |||
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| manual 311690. In future, stop pump at |
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| bottom of stroke. |
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Pump will not prime | Suction line clogged. | Clear. Flush more frequently. | ||||||||
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| Held open or worn ball check valves. | Check and repair. | |||
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| Piston assembled with wrong nut. | Use only the large, round, special nut. | |||
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Excessive throat leakage. | Worn piston rod or throat packings. | Replace. See lower manual 311690. | ||||||||
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Pump will not stall when fluid is shut off. | Warn ball check valves. | Check and repair. | ||||||||
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| Worn piston packing. | Replace. See lower manual 311690. | |||
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14 | 311211L |
