Long 610 Hyd stopped working--both lift and remotes

Stopped then all at once worked normal. I drove a dozen pipe post with driver run buy the remote. Next day when I start up nothing works again. Never did start working. Plenty of fluid and surely a filter does not act like this. Just total shut off then work normal. Any ideas? Thanks. LB
 
Any more ideas on this. Cleaned filter and was pretty clean. Tried and nothing. It's like there is no pump. I removed filter and no oil had even been on it. Still smelled of cleaning solvent. Funny thing was it was not working then started up and worked all day then has not worked since. I will check for blockage in oil supply line but don't see how that could happen. If it was blocked looks like the pump would destroy itself from lack of oil by now as I still use tractor every day or so to load hay with front loader. Pump is quite and cool. Next will remove pump and replace. I see cheap 610 pumps on ebay less than $200. Just wonder why it stopped, then worked perfect again. Not like it has worn out???? LB
 
Try this. Look at the hydraulic pump outlet. It should have a two bolt flange on the steel line to the lift system. Loosen the bolts, probably takes a 10 mm socket but some had allen screws. loosen the bolts two or three turns, enough to move the flange up far enough to see some daylight between pump body and the flange. Start the tractor at an idle and be prepared to shut it off as soon as you see oil squirt out of the pump. If it still won't pump, rev it up a little and see what happens. Those pumps can loose their prime on occasion, and need to be bled. That may get you going without spending any money, if that doesn't work,either the pump is junk or it's not turning;broken shaft,drive coupler or such.
 

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