Hydraulic pump or clutch?

[wwc]

When I got this L3750 gear drive Kubota, it had not been used for three or more years. The front end lift worked slowly, and two lines broke which I replaced. I added universal hydraulic oil, and used the tractor for a few hours, mowing and moving some dirt, but it didnt have much power. Finally, it would barely move when the engine was reveded up. I bought Kubota hydraulic oil and filter and changed all 11 gallons, putting as much oil as possible in the filter before attaching it. Now the lift and three point work better, but with the tractor in gear and with increased throttle the tractor very slowly moves and gets up to speed, but when stopped the same thing happens. Is it possible there is air in the system, or will it need a hydraulic pump, or clutch? I was told there is a valve which lets air bleed off the system. Could that be the problem?

 

[North Idaho Wolfman]

Being that it's a geared tractor hydraulic fluid has almost nothing to do with it moving!

You need to either adjust the clutch or most likely replace it.