How to fix a trailer mounted cherry picker failure

To fix a trailer mounted cherry picker failure, you should know it’s working principle first: the hydraulic motor drives the reducer, the slewing ring of small gear reducer output shaft makes the turntable rotate, so as to achieve the purpose of high-altitude operations. The Aerial failure is usually occurs on these small parts of the lift.

First step is to choose a good checking method, for example with a clean hard objects which is around 6mm to drive piston front relief valve core, you can check whether trailer mounted cherry picker is able to move flexibly, and that is spring piston core bouncing back, then assembled in the relief valve body up. The adjustment handle can be used to control the fuel tank pressure, the pressure should not be too great, it can’t exceed 16Mpa for high pressure will damage other parts.

Inside the trailer mounted cherry picker relief valve is set with an automatic pressure relief valve core, that is, within the valve body to the front end of a piston moves to control the size of the flow around the valve body, when the piston cores appear to have miscellaneous material time, it will affect the lift arm the lifting speed and pressure.

The way to get the dirt out of the trailer mounted cherry picker is: disassemble the outfit in the front of the relief valve, use diesel oil or kerosene to clean it, the gasoline is not a good option, then assemble all the parts back.