no power steering

[sydarren]

Hi, I have a 2555 John Deere tractor. As I was driving I lost hydraulic power steering. At first it would still steer to the left but couldn't turn right. Then I had no steering at all. with the front wheels jacked up and tractor running steering will turn left easily but stiff turning right but with tractor off and wheels up it will steer left and right. Please someone, help me figure out whats going on with this steering.. Thanks in advance

 

[Tx Jim]

If your tractor is an open station without hydrostatic steering then it sounds as if one of the control spools(parts key 17 or 18) inside steering housing has failed.