General information for boat and dock owners, not legal, engineering or insurance advice. Always follow your lift manufacturer’s instructions.
Boat lifts rarely fail without warning. Most give you weeks or months of small signs first: a new noise, a cable that looks a little rough, a motor that takes longer to get going. Catching those early is cheaper and safer than dealing with a lift that stalls or drops with the boat on it. Here is what to look and listen for.
Cables you can see are wearing
On a cable lift, the cables carry the whole boat. Inspect them every time you run the lift, from a safe spot, not under the load.
- Broken strands or “fishhooks” sticking out of the cable
- Kinks, flattening or bird-caging where the strands open up
- Rust bleeding from inside the cable, not just surface staining
- Uneven wraps on the drum, or a cable that has jumped a pulley
Any of these means the cable should be replaced. See cable and motor replacement.
Noises that weren’t there before
- Grinding or clicking from the gearbox can mean worn gears or bearings.
- Squealing pulleys often point to seized or corroded sheaves that chew up cables.
- A motor that hums but doesn’t turn may have a failed start capacitor, a bad motor or a jammed drive.
- Popping or banging as the lift runs can mean a cable is slipping on the drum.
The lift moves wrong
- One side rises faster than the other. Usually cable stretch or uneven wraps. Lifting unevenly puts extra load on one side.
- The lift creeps down after you stop it. The gearbox or brake may not be holding the load.
- It doesn’t stop at the top. The limit switch may be out of adjustment or failed. Running past the top can damage cables and the frame.
- It’s slower than it used to be, or the motor runs hot.
Electrical warning signs
- The GFCI or breaker trips when you run the lift
- The remote or wall switch works only some of the time
- Corroded, cracked or chewed wiring and connections
- A burning smell from the motor
Dock electrical problems around water are a safety issue. Switch the lift off at the breaker and have it checked.
Structure and bunks
- Bunk boards that are split, sagging or missing carpet or covers
- Loose, corroded or missing bolts and brackets
- Bent beams, cracked welds or damaged guide posts
- Pilings or seawall mounts that look damaged or have shifted
Structural problems are worth a professional look before the next storm, and before you decide between repair and a new lift.
If the lift fails with the boat on it
- Keep everyone off the boat and out from under it.
- Switch the lift off at the breaker.
- Don’t try to force it up or down with the switch.
- Take photos from a safe spot and request service, noting that the boat is on the lift.
How to avoid surprises
Routine service catches most of these problems before they strand your boat. Many Gulf Coast owners book a check twice a year, with one visit before hurricane season. See boat lift maintenance andhow cables and motors work.