Gantry crane outrigger hydraulic system oil spills cause of the failure and the measures

Gantry steel crane  outrigger hydraulic system oil spills cause of the failure and the measures:
Reason is that the connector is loose, you should find the parts and tighten; seal is broken, you should replace; pipeline cracks, replace or welding.

Gantry crane stacker  overhead bridge crane  lifting weakness or inability of these solutions:
Replace worn or gear pump; readjusted; inspection and repair; replace unqualified hydraulic oil and check the oil temperature causes; Check and adjust; Check motor and troubleshooting.

Gantry crane stacker  overhead gantry crane  lifting causes weakness or not:
Gear pumps and pump mention excessive wear; valve pressure relief valve inside the improper; oil pipeline spill; hydraulic oil temperature over; mast carriage presence of jamming; pump motor speed is too low.