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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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Super 55 hydraulics,

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super 55

08-17-2004 12:53:52




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Now I'm really scared=P, Thank goodness I have the manual. Figured I should check it out as long as I have the cover off. Anything in particular to look for? There wasn't too much debris in it. Bet it's the first light in their since it was built.




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jeinsc

08-17-2004 18:57:00




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 Re: Super 55 hydraulics, in reply to super 55 , 08-17-2004 12:53:52  
I know what you mean. Have my 1955 S55 apart. I had to replace all seals and bearings in
transmission. The 3 pt lift cylinder had worn out O ring no back up washer. Can anybody tell me how
to stretch the new leather back up washer over
the piston??
jeinsc.



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Phil - MO

08-18-2004 05:14:01




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 Re: Super 55 hydraulics, in reply to jeinsc, 08-17-2004 18:57:00  
I worked on my 550 hydraulics awhile back. I had purchased it from a small dealer now out of business.
The main cylinder was missing the leather backup washer also and I made the mistake of thinking that was the only problem (the pump looked like new and must of recently been rebuilt).
Definitely replace all o-rings.
I had trouble putting the leather washer on the cylinder also. I soaked it in oil and worked carefully. Looks like it would be easy to break and that is what probably happened to mine when they worked on it before I bought it and they just left it out.
I'm going to have to redo mine to keep it from hiccuping. Is there any why to check the clearance on the spool and pressure check the control when out of tractor?
The pump is like new and has always had proper pressure when I check it running.
It's discouraging to get finished and still have hiccuping. I'm beginning to wonder if all Super 55 and 550's have hiccuping problems and people just live with it.

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super 55

08-17-2004 20:00:11




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 Re: Super 55 hydraulics, in reply to jeinsc, 08-17-2004 18:57:00  
Fortunately I don't see much wear in any of pieces, I will replace the o-rings. The leather backing washer was only a small crescent piece left behind the o-ring on the piston. I haven't made a parts list yet, was that still available from AGCO? Did you see the web page for rebuilding the pump.....
The pipe plugs on the cylinder were sure a pain. On the end there was two, one with 1/4" internal opening, the other had the external. The internal one shattered at the casting surface and the external stripped. Welded a nut to the stripped one. With the one that broke off right at the casting I welded a washer, then a piece of 3/4 square stock on top of that. Worked like a dream. The heat from the welding freed up the threads, and the new heads gave lots of meat to get torque.

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B

08-18-2004 06:19:27




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 Re: Super 55 hydraulics, in reply to super 55 , 08-17-2004 20:00:11  
If you ever get an answer about the parts availability, please post back. I'm about to go through mine for te first time as well. It's the same year as yours.

Good luck with your Super 55

B in QC



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super 55

08-19-2004 08:52:07




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 Re: Super 55 hydraulics, in reply to B, 08-18-2004 06:19:27  
I was lucky and found all of my parts from an old Oliver, now AGCO dealer in Everson, Washington. He even had a rebuild kit for the Vickers pump. It was sitting on his shelf for years so he is going to give me a deal on it.
I would try O'Brien County. They are pretty good on supplying parts.



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J. Schwiebert

08-17-2004 18:48:49




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 Re: Super 55 hydraulics, in reply to super 55 , 08-17-2004 12:53:52  
I have not figured out what you are asking here, but I would replace all the o-RINGS AS A MATTER OF GOOD SHOP PRACTICE!. I would also check to see if you have the original size pump or if you have a latter 550 pump and maybe take the cover off the pump and see how much wear is in the vanes and rotor.



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super 55

08-17-2004 21:37:30




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 Re: Super 55 hydraulics, in reply to J. Schwiebert, 08-17-2004 18:48:49  
J.
I was just wondering if there is something that is often overlooked that should be attended to. I am tempted to leave the shaft for the three point arms alone. There is no fluid leak, and I don't want to have to remove it and replace the seals if I don't have to. Is that being pound foolish? I am removing all the old o-rings and putting all the parts through the parts washer, protecting the spool valves.

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Larry from MD

08-18-2004 05:27:26




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 Re: Super 55 hydraulics, in reply to super 55 , 08-17-2004 21:37:30  
The seals on the shaft can be replaced from the outside,if the bushings are not loose.



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