Grading Hydraulic blade no turn?

[bxbuster]

I have an older hydraulic turning blade that I have been using to move snow with great results. I was pushing back some banks under full power, I guess more like ramming them, anyway the cylinder no longer operates in one direction. I obviously know nothing about hydraulic cylinders so I was hoping someone could tell me if I blew the cylinder out or damaged my valve on the tractor?

Thanks for any replies.

Mike

 

[BigAl]

Check you quick connects on the hydraulics. I bet one is popped off .
Big Al