kubota L5740 hst-1 loader problem

[bucktaker]

Recently my loader is not holding the bucket position. I find the bucket fully dumped within a few hrs of shutting it down. Lift and curl feel fine when operating and i can see no leaks on the cylinders or hoses or connections. Fluid is correct level and no contaminants

I am thinking there must be an internal seal leaking??? ideas


thanks Larry

 

[RNeumann]

Hydraulic cylinder fluid internally bypassing - YouTube

It’s going to drift a little. Cylinder seals wear along with valves. Typically they aren’t serviced until they affect operation. You are probably years away from that....let’s hope anyway!

 

[bucktaker]

there are two cylinders on the bucket cant see how both would fail......it doesnt drop a little if the bucket is help up it will go full dump in a few hrs.... I dont have any way to measure the pressure to see if its the valve, or the cylinders.... any ideas ?