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Troubleshooting Chart for Electric Hydraulic Power Units
MODEL CONDITION POSSIBLE CAUSE CORRECTION
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.
5. Inoperative “B” coil. (red wire) 5. Replace “B” coil. (red wire)
6. Malfunctioning motor. 6. Repair or replace motor.
7. Malfunctioning pump. 7. Replace pump.
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.
5. Inoperative “C” coil. (green wire) 5. Replace “C” coil. (green wire)
6. Inoperative “C” cartridge. 6. Clean or replace “C” cartridge.
7. Leaking or open crossover relief valve. 7. Clean or replace crossover relief valve.
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.
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.
Models