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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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Pressure on 1850 hyd.

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Just wondering

08-13-2006 05:57:52




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Hi everyone. Just had a quick question on our 1850 gas hyd. Any time the tractor is running there is pressure on the hyd. couplers. If you take a coupler off oil will run out till the system is empty. Other than that the system works just fine. Any thoughts? Thank you! Cliff




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J Schwiebert

08-13-2006 12:02:59




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 Re: Pressure on 1850 hyd. in reply to Just wondering, 08-13-2006 05:57:52  
I am trying to determine what you asking like, is this a problem? The answer is: Oliver did not use selective fit valve spools. All valve spools leak otherwise they would not move to be shifted. Oliver used in hydraulic terms a "pilot operated check valve" in the system. Since you unhooked the hose(s) there was no hydraulic load to keep the pilot operated check closed. So there is no restriction to flow (hose unhooked oil will run out. Now if you hook up an implement raise the implement, shut the tractor off, move the handle to lower the implement and the implement goes down, then your check valve is not doing it job. Everything has an advantage and a disadvantage. The big advantage to the Oliver system is if kids play on the tractor and move the valve to the lower position the load will not come down and cause injury. More questions? J?

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just wondering

08-14-2006 04:06:00




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 Re: Pressure on 1850 hyd. in reply to J Schwiebert, 08-13-2006 12:02:59  
Thank you! That does answer my question. Have a good week!



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evielboweviel

08-13-2006 13:17:03




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 Re: Pressure on 1850 hyd. in reply to J Schwiebert, 08-13-2006 12:02:59  
On my 1650D 68 model my uncle carl changed the ends to pioneer universals from the srew on ends I have one that he put the male end in with a pipe plug cause it keeps leaking oil and yes it will pump oil out if plug removed from the male end.
Question if I replace the female piece will it stop leaking oil out? If I understand what you said the 50 series needs some kind of cap on at all times. The female coupler should act as a cap and if it doesn't then a new one should fix the problem. This right or am I still confused??
2cd question if I buy one of those hydraulic connnections with the levers for hooking up under pressure will this work ok? Thinking about buying a set at Ohio State Farm Science Review in sept.
thanks
Ron

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Don-Wi

08-13-2006 21:26:06




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 Re: Pressure on 1850 hyd. in reply to evielboweviel, 08-13-2006 13:17:03  
You should be able to just buy 1 new coupler and it'll be fine. All the 4 digits have preasure on the couplers, atleast my 1600 does and so does the 1855.

For replacement options, they have connect under preasure couplers that don't have the levers like IH couplers do, and they are easy to plug into. I put these on my 1600 and no problems, got them at Fleet Farm.


I stole the other couplers my dad put on it 20-30 years ago when I had it torn down and I was doing hydraulics on our Massey 165 for a loader.


Donovan from Wisconsin

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