B1-15 hidraulics problem

[mora81]

Dear All,

I have problem with the 2point lifting on Kubota Bulltra.
I checked the system and it seems the valve doesn't work properly.
When I open the electric valve to lift up the 2 points, i can not blow through
the air.
Would somebody have shematic and/or explosed drawing about this valve?
Or any idea what should i do?

Thank you in advance!
Zolt疣