Bobcat 853 hydraulic issue.

[Williamjr123]

Recently my my 853's boom hydraulics will stop operating. If I throttle back to idle they seem to work fine although as soon as I throttle back up they stop or move very slowly. If park it overnight and use it everything works great for an hour or so then same issue. I've checked the fluid level and I don't see anything leaking loose our unplugged. The machine steers and drives fine all the time. Any info or suggestions would be greatly appreciated.

 

[Tazza]

There is a possibility that the hydraulic pump is worn. As the oil warms up, it thins out making it by-pass the internals of the pump. The only way to know for sure is to get it tested.