Keycare
New member
Hi All,
I am try to fault find a problem with my hydraulics on my MF250. I have the workshop manual, but I am struggling with the poor picture quality, number of variations and terminology. I've watched youtube videos etc but am still drawing a blank.
Basically, neither the lift arms nor the loader work. They did last year, albeit a bit juddery sometimes, but I have been rebuilding the engine so it was idle for about 1 year. When I started it, it all seemed to work fine, then the hydraulics just stopped working.
At first, the arms would lift when in transport position after the tractor was started, however, adjusting position control after that meant they no longer responded, until the engine was turned off, waited and switched on again, then the arms would lift. I thought it was the control valve (roller valve behind the dipstick cover). It was a little sticky, but now it moves freely and there is still no lift. There appears to be flow from the standpipe, but I don't know if it is enough to create the pressure required. So I thought it might be the pressure relief valve. I once again took the lift cover off, but cannot see any relief value - see link.
MF250 Hydraulics
I am also struggling to identify what's what. It has an hydraulic pto clutch, but that is also not working so the pto is constantly engaged.
I was going to try and remove the pump, but I cannot twist the driveshaft in order to remove the cotter pin. Shouldn't it move freely when it's out of gear? There is simply no room to remove the pin if I can't twist the shaft.
Can any one shed any light on this arrangement, and the components in the picture?
Much appreciated.
I am try to fault find a problem with my hydraulics on my MF250. I have the workshop manual, but I am struggling with the poor picture quality, number of variations and terminology. I've watched youtube videos etc but am still drawing a blank.
Basically, neither the lift arms nor the loader work. They did last year, albeit a bit juddery sometimes, but I have been rebuilding the engine so it was idle for about 1 year. When I started it, it all seemed to work fine, then the hydraulics just stopped working.
At first, the arms would lift when in transport position after the tractor was started, however, adjusting position control after that meant they no longer responded, until the engine was turned off, waited and switched on again, then the arms would lift. I thought it was the control valve (roller valve behind the dipstick cover). It was a little sticky, but now it moves freely and there is still no lift. There appears to be flow from the standpipe, but I don't know if it is enough to create the pressure required. So I thought it might be the pressure relief valve. I once again took the lift cover off, but cannot see any relief value - see link.
MF250 Hydraulics
I am also struggling to identify what's what. It has an hydraulic pto clutch, but that is also not working so the pto is constantly engaged.
I was going to try and remove the pump, but I cannot twist the driveshaft in order to remove the cotter pin. Shouldn't it move freely when it's out of gear? There is simply no room to remove the pin if I can't twist the shaft.
Can any one shed any light on this arrangement, and the components in the picture?
Much appreciated.