Sometimes Slow

[Mudfarmer]

The rate lift of the 3point on my Kubota B7100 for the last six months has been sometimes very slow and at other times normal. I can find no rhyme or reason for when it is one way or the other. When it first started I sent it into the Kubota dealer's shop and of course it wouldn't go slow. I had them change the hydraulic fluid and filters anyway. Still, sometimes slow, sometimes normal, kind of aggravating. Any ideas?
Mf

 

[cooterdude]

does temprature have anything to do with it cold oil doesnt flow as fast as hot oil other than that id say a releif valve sticking open

 

[Mudfarmer]

No, cold doesn't seem to apply. So where in the three point system is the relief valve, I am pretty foggy re hydraulic setups.
Mf

 

[Leejohn]

On the hyd pump suction line where it goes into the trans case there is a filter. Pull it and see if it was cleaned when it was in the shop. This on the right hand side of the trans. There is also one on the left, but that is for the HST suction. You well have to drain the rear end of oil, if new I would reuse it.