M7950DT 3-Point Intermittent Problem

[Festus]

I have a Kubota M7950DT that is experiencing intermittent problems on the 3-point lift system.
It will lift with no implement attached or with a very light implement. But no amount of moving the levers, increasing the RPMs or anything else will get it to lift a heavy implement.
Then for no apparent reason it will start working and will lift the heavy implement at an idle. It will work okay for a few days but if I leave it set for a few days then it is back to not lifting again.
It is almost like the pump has lost its prime or something like that.
The lift is rated at 4848 pounds.
The fluid and filter have been recently changed.
Any suggestions would be greatly appreciated.
Thanks
Festus

 

[Thomas]

Festus,
It maybe you might have some water in your hydraulic or a seal has a problem.
You mention the pump..have you notice a burnt smell or the pump seem to be warmer than usual.
When you replace the hydraulic fluid did you replace it w/the recommended grade and brand.
Have you notice if the hydraulic fluid foamy or white color.

I'm interested in knowing your out come.


Thomas..NH /w3tcompact/icons/wink.gif

 

[art]

Have you checked the location of your draft control lever? That would make the difference if you are moving that and noticing it.

 

[Anonymous Poster]

Your pump may have lost prime as that is what it sounds like we had a old Ford 4000 here before we traded it in and when the tractor cooled down the gasket by the hydraulic pump shrunk allowing air in the line when it was warm out or after you ran the tractor for a while it would expand the gasket and the loader and 3 point would work other than that it would work hard and maybe go up if it felt like it. Good luck and hope you fix your problem