1972 IH 1026 hydostatic not moving

[JESSR]

I've got a 1972 1026 series tractor with a hydrostatic transmission that does not move a couple years ago it was started and moved cold, it was backed up then when put i forward it just stopped moving, the hydraulics work it just wont move. does anybody have any ideas

 

[art]

They are a more complicated system then used today and you might have a bad hydro or it could be the control valve. We just did one for a customer that he had bought new. I would find a good CASE-IH dealer that was originally IH for the best possible help.