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2022 Continental Cargo Open Aluminum Utility CARGO TRAILERS 12V DC Power Unit Troubleshooting Guide
12V DC Power Unit Troubleshooting Guide
General Instructions for 12V DC Systems
- Check the battery voltage. If the voltage is 9 volts or less, do not operate the power unit. Charge battery to 12 volts.
- Check to see that the motor is wired correctly to the starter switch and all other control wires have tight connections.
- Check ground wire for good connection.
- Check reservoir oil level.
- Do not tamper with the relief valve. It is factory preset to a specified pressure and wired. Cutting this wire voids the warranty.
Symptoms
- The unit will not start
- Unit drifts when power is off
- Slow cylinder travel
- The unit will not lower
Probable Cause
- Improper voltage to the motor
- See solutions 1, 4, 5.
- Improper ground
- See solutions 1, 6, 7.
- Improper voltage to valves
- See solutions 1, 6.
- Leakage through solenoid valves
- See solutions 3, 4.
- Internal leakage at the cylinder
- See solutions 4, 5.
- Insufficient oil to pump inlet
- See solutions 2, 3, 5.
- Pump seized or locked
- See solutions 4, 5.
Possible Solution
- Check wiring to ensure that all connections are tight.
- Keep the oil reservoir full and clean.
- Flush and clean cartridge valves and/or hydraulic system.
- Replace components.
- Return for the necessary repair.
- Check for clean, tight, metal-to-metal contact on wire connections.
- Make sure the nut on top of the solenoid valve coil is tightened to 40 in. lb maximum.