Crane hydraulics and controls repair
Leaks, slow or drifting functions, valves, cylinders, hoses and control faults.
Questions about symptoms
A cylinder drifts down when parked.
Drift can come from the cylinder, a holding valve or a control leak. Tell us which function moves, how fast it drifts, and whether it happens only when the engine is off.
Everything is slow when it's cold.
Cold, slow functions often involve oil viscosity, a bypassing pump or a relief valve, but those are starting points, not a diagnosis. Note the air temperature, how long it takes to warm up, and whether one function stays slow after the rest recover.
A control function stopped working after a hose was replaced.
A function that dropped out after hose work can be a crossed line, a fitting issue or air in the system. Tell us which hose was changed, which function failed, and whether anything else changed at the same time.
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 service-truck cranes.