2022 Continental Cargo Snow King CARGO TRAILERS 12V DC Power Unit Troubleshooting Guide
12V DC Power Unit Troubleshooting Guide
General Instructions for 12V DC Systems
- Check battery voltage. If voltage is 9 volts or less, do not operate 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 relief valve. It is factory preset to a specified pressure and wired. Cutting this wire voids warranty.
Symptoms
- Unit will not start
- See causes 1, 2, 7.
- Unit drifts when power is off
- See causes 3, 4, 5.
- Slow cylinder travel
- See causes 1, 2, 4, 5.
- Unit will not lower
- See causes 2, 3.
Probable Cause
- Improper voltage to 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 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 oil reservoir full and clean.
- Flush and clean cartridge valves and/or hydraulic system.
- Replace components.
- Return for 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.