Back Blade drops

[Jofi]

I have a Kubota B8200 HST and while using the Front end loader the back blade will slam on the ground. I'm a little concerned that there is something going on with the Hydraulics.

 

[shootem604]

Check fluid levels. Check suction return hose for leaks. Is there an adjustment knob for the 3 point hitch ( in front/under the seat?

 

[Tx Jim]

Sounds as if 3 pt control valve is leaking & when pump pressure is diverted to FEL control valve 3 pt has no pressure oil to hold 3 pt in raised position