I have a Kubota KX121-2 mini excavator that is having some hydraulic problems. It was working fine and it sat for 3-4 months. Then I started it back up and the main hydraulics do not work. ( tracks, boom and bucket) The secondary pump that runs the blade and turntable work well.
we noticed a hissing/air sound on startup for few second and hydraulics work for mere seconds then it stops completely. sometimes hear bubbles or air in the hydraulic tank ( tank is slightly overfilled)
On the KX121-2 there is very little electronics compared to my KX121-3( newer model)
It seems like there is a main relief valve stuck open, allowing fluid toflow back into the tank at a high rate ? Hydraulics are my weak spot.....
Has anyone had a similar issue ?
Thanks
Don
we noticed a hissing/air sound on startup for few second and hydraulics work for mere seconds then it stops completely. sometimes hear bubbles or air in the hydraulic tank ( tank is slightly overfilled)
On the KX121-2 there is very little electronics compared to my KX121-3( newer model)
It seems like there is a main relief valve stuck open, allowing fluid toflow back into the tank at a high rate ? Hydraulics are my weak spot.....
Has anyone had a similar issue ?
Thanks
Don