Allis 5050 jumpy to no hydraulics

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   I purchased a low hour 5050 a few years back and the hydraulics are giving problems.When hooked to an implement the tractor won’t lift (say a Tedder) smoothly.. it jerks and may not all all. Is it a bad hydraulic pump? I changed hydraulic oil, cleaned the filter, and even filled the pump from the top side to eliminate a possible airbound/cavitation like situation.. still does it.
I  also checked under the seat to see if the valve(?) was free. I found this on line on a Universal tractor.
I also lost the power steering after I noticed the fluid level was low.. I filled it but the steering never came back. Is there a way to purge air out of these systems? 
Any help is greatly appreciated.
Pete

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Allismass Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 03 Apr 2020 Location: Massachusetts Points: 16	Post Options Post Reply Quote Allismass Report Post Thanks(0) Quote Reply Topic: Allis 5050 jumpy to no hydraulics Posted: 13 Apr 2024 at 4:13am
	I purchased a low hour 5050 a few years back and the hydraulics are giving problems. When hooked to an implement the tractor won’t lift (say a Tedder) smoothly.. it jerks and may not all all. Is it a bad hydraulic pump? I changed hydraulic oil, cleaned the filter, and even filled the pump from the top side to eliminate a possible airbound/cavitation like situation.. still does it. I also checked under the seat to see if the valve(?) was free. I found this on line on a Universal tractor. I also lost the power steering after I noticed the fluid level was low.. I filled it but the steering never came back. Is there a way to purge air out of these systems? Any help is greatly appreciated. Pete
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Gary Burnett Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 11 Sep 2009 Location: Virginia Points: 2940	Post Options Post Reply Quote Gary Burnett Report Post Thanks(0) Quote Reply Posted: 13 Apr 2024 at 12:18pm
	Did you put a new O ring in when you cleaned the screen?Sounds like its sucking air.

tbran Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 14 Sep 2009 Location: Paris Tn Points: 3298	Post Options Post Reply Quote tbran Report Post Thanks(0) Quote Reply Posted: 15 Apr 2024 at 9:04am
	Remove the screen and run it for a few minutes. You have cavitation - 99% screen issues.. Assume you have separate reservoir - if it is full - loosen one power steering line at the cylinder- crank and turn steering wheel.
	When told "it's not the money,it's the principle", remember, it's always the money..