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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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Hydraulic power beyound

Dan McClure

05-11-2005 19:19:52

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I have a new koyker loader ordered for my 1555 1969 and want to hook loader direct but not sure were you do this any help would be appreciated have dual remotes but dont want to tie them up! thanks Dan

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05-13-2005 06:01:06

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 Re: Hydraulic power beyound in reply to Dan McClure, 05-11-2005 19:19:52  
Dan McClure; I am in the process of removing a Buhler loader from a 1650 Oliver that is now for sale and I had the power beyond rigged up on it with a 3 bank control valve. This whole unit is now for sale if that would help you any as far as the valves or loader in you situation. All of it is only 3 or 4 years old. I just went to a larger unit on a mwfd tractor. The bucket has only had snow on it once. It was used on hay grapple 95% of the time.

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B A Star

05-12-2005 22:45:15

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 Re: Hydraulic power beyound in reply to Dan McClure, 05-11-2005 19:19:52  

This shows the bypass line when valve is removed, this is for 1800/1900 "A" series only. Notice in my previous post the inlet to valve and exhaust is reversed from later tractors.

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B A Star

05-12-2005 22:41:56

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 Re: Hydraulic power beyound in reply to Dan McClure, 05-11-2005 19:19:52  

1800 A Power beyond from Service Bulletin. This is for the "A" Series only.

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B A Star

05-12-2005 20:52:19

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 Re: Hydraulic power beyound in reply to Dan McClure, 05-11-2005 19:19:52  
W. Burrow: Don-Wi is incorrect, the "A" Series 1800/1900 are not the same. The cover assembly does not have a threaded area for installation of the 3/8" pipe plug. The method for installing a power byond on those tractors is to remove the cover assembly and install a blind connector (part #158 227A) in place of the original connector in the Left front passage. See photos of installation in my next post. You could install a later cover from another tractor that has the threaded area, however that could be expensive.

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Sam M

05-12-2005 11:08:50

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 Re: Hydraulic power beyound in reply to Dan McClure, 05-11-2005 19:19:52  
Here are some practical problems that I ran into/solved doing a power beyond on my 1555 :

1. The 1/2 pipe plugs shown in Mr Star's pictures may need to be heated (and beat on ) to be removed . Try heating and then using an air hammer to remove .

2. When you remove the 1/2 pipe plug nearest the oil filter (the top left 1/2 plug in the picture ) , you need to install a 3/8 pipe plug inside . You will need a long 3/8 Allen wrench .

3. I used two female quick couplers (use the better 7000 series ) and two pieces of threaded pipe to make the connections to the loader . The quick couplers screw onto the pipe which then screw into the threaded areas from which the pipe plugs are removed . The piece of pipe that screws into the plug area nearest the hyd oil filter needs to be at least 6 or 7 inches long so the quick coupler clears the housing enough to work . You then just plug the hoses from the loader into the quick couplers .

4. If you plan to remove the loader from the tractor and leave the power beyond in place , you are going to have to make a jumper to go between the two quick couplers , otherwise , when you unplug the loader , hydraulic fluid is going to "dead head " against the closer coupler and the 3/8 plug installed inside the tractor top . You just need a short piece of hyd house with male quick couplers on each end .

5. You need to make sure the value for the loader is set up for an open center hydraulic pump .

6. Make sure the loader is compatable with a 1555 and is not too heavy .

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B A Star

05-12-2005 07:25:05

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 Re: Hydraulic power beyound in reply to Dan McClure, 05-11-2005 19:19:52  

Here is a copy of the instructions from the factory shop manual.

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05-12-2005 09:11:49

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 Re: Hydraulic power beyound in reply to B A Star, 05-12-2005 07:25:05  
ba star do you have any info on power beyond for an 1800 a series oliver

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J. Schwiebert

05-13-2005 12:42:31

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 Re: Hydraulic power beyound in reply to w.burrow, 05-12-2005 09:11:49  
I am Mr Star posted that information. I remembered they were different and needed an external line. Now if you are going with the common Gresen SP monoblock valve get one drilled for power-beyond and if your application requires more than 1500 psi make sure you get an NR plug for the valve. Otherwise the system can give you fits. No problem having 2 relief valves in an open center system but the old rule the pressures must be no closer than 250 psi does apply. If you are going with a 2 spool and float the Gresen casting should be a 2712. Questions?

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05-12-2005 18:37:16

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 Re: Hydraulic power beyound in reply to w.burrow, 05-12-2005 09:11:49  
It should be the same set-up
Donovan from Wisconsin

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