Troubleshooting Chart for Electric Hydraulic Power Units
MODEL | CONDITION | POSSIBLE CAUSE | CORRECTION | ||
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All | Plow does not lift or lifts | 1. | Low hydraulic fluid level | 1. | Add fluid to proper level. |
Power | slowly- motor operates. | 2. | Discharged battery. | 2. | Recharge battery. |
Angling |
| 3. | Leaking or open “A” cartridge. | 3. | Clean or replace “A” cartridge. |
Models |
| 4. | No current to “B” coil. (red wire) | 4. | Locate malfunction and repair. |
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| 5. | Inoperative “B” coil. (red wire) | 5. | Replace “B” coil. (red wire) |
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| 6. | Malfunctioning motor. | 6. | Repair or replace motor. |
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| 7. | Malfunctioning pump. | 7. | Replace pump. |
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All | Plow does not angle right - | 1. | Improper coupler engagement. | 1. | Engage coupler properly. |
Power | motor operates. | 2. | Mechanical bind or interference. | 2. | Eliminate mechanical bind or interference. |
Angling |
| 3. | Malfunctioning coupler. | 3. | Repair or replace coupler. |
Models |
| 4. | No current to “C” coil. (green wire) | 4. | Locate malfunction and repair. |
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| 5. | Inoperative “C” coil. (green wire) | 5. | Replace “C” coil. (green wire) |
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| 6. | Inoperative “C” cartridge. | 6. | Clean or replace “C” cartridge. |
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| 7. | Leaking or open crossover relief valve. | 7. | Clean or replace crossover relief valve. |
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All | Plow does not angle left - | 1. | Improper coupler engagement. | 1. | Engage coupler properly. |
Power | motor operates. | 2. | Mechanical bind or interference. | 2. | Eliminate mechanical bind or interference. |
Angling |
| 3. | Malfunctioning coupler. | 3. | Repair or replace coupler. |
Models |
| 4. | Leaking or open crossover relief valve. | 4. | Clean or replace crossover relief valve. |
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All | Plow will not angle - | 1. | Improper coupler engagement. | 1. | Engage coupler properly. |
Power | Motor operates. | 2. | Mechanical bind or interference. | 2. | Eliminate mechanical bind or interference. |
Angling |
| 3. | Leaking or open crossover relief valve. | 3. | Clean or replace crossover relief valve. |
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