John Deere 4320

[Tim Heuiser]

I have a 1972 4320 that loses hydraulic function when the clutch is engaged. A local mechanic told me this is normal for this model tractor but I find that hard to believe. I have had the front hydraulic pump replaced but that did not help. It is very difficult to hook up implements with this tractor because I lose brakes and steering when I engage the clutch for very long. Any ideas for a fix?

 

[ben brown]

well tim he is right. when the clutch is ingaged it stop the transmission and that is what drive the transmission charge pump that pumps oil to the main hy pump. the 30 serie foward ues a small shaft from fly wheel that drive the transmisson pump problem solved, if you notice your has a tank fro hy fluid in front of rad, that to give you some exta time when shifting. on later serie 30+ the tank is not needed.

 

[tim s]

It probably has a weak transmission pump and-or a component leaking to sump,,on those models I find that it's the PTO valve 'most' of the time..

 

[buickanddeere]

Change mechanics.

 

[Tx Jim]

Tim Heuiser,
I always thought engaged meant clutch pedal out and dis-engaged meant clutch pedal pushed in.

I do agree on you looking for another mechanic.