Service-truck crane repair
Electric and hydraulic cranes on mechanics' and tire trucks.
Questions about symptoms
The crane hums but won't lift.
That can be a motor, solenoid, hydraulic or mechanical bind. Note whether you hear the motor or pump, whether the winch or boom tries to move, and any recent work or impact.
Winch slips under load.
Slipping under load can be wear, adjustment or a hydraulic or brake issue, depending on the crane. Tell us when it started, about how much weight was on the hook, and whether it happens in both directions.
Rotation is jerky.
Jerky rotation can come from the turntable, a valve, a motor or low or contaminated oil. Note whether it happens through the full swing or only in one area, and whether other functions feel the same.
What to send us
- Make, model and year if you know them
- Serial, VIN or unit number
- Where the equipment is, and whether it can move
- What it is doing, and any fault codes
- Photos, emailed to office@omnicranediesel.com after you send the request
Related pages
Back to crane repair. Also see boom truck and knuckle-boom and hydraulics and controls.