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John Deere Tractors Discussion Forum
Show Parts for Model:

loader for 2750 john deere

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BIGBADDEERE

09-25-2012 14:21:59
99.119.245.184



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looking at a allied loader for my 2750 cab tractor..don't know what kind of tractor it came from..it has mounts and guy says its inter changable but he is just tring to sell it for the widow..question is its a 595 loader and is he right about it will fit my 2750..i have looked for information and can't find anything.also i know i will need to get the wobble controls for inside the cab..thanks,,bill

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Tx Jim

09-26-2012 09:32:28
67.142.163.27



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 Re: loader for 2750 john deere in reply to Coyote Green, 09-25-2012 14:21:59  

buickanddeere said: (quoted from post at 10:15:09 09/26/12) If the loader is connected downstream of the priority valve then
yes the PS will operate.
The rock shaft won't have high pressure oil unless the
loader is restricting flow via lifting a load and increasing
pressure


Sorry but power steering won't operate any better than rockshaft just because of pressure control(aka priority valve) where an open center valve is involved.The only thing short of removing open center valve is operate the boom or bucket cylinders to their maximum travel and hold that control lever to block flow of oil through the OC valve. Then PS & RS should work after pump stops cavitating.
This post was edited by Tx Jim at 10:42:41 09/26/12 2 times.

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Tx Jim

09-26-2012 05:32:27
67.142.163.21



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 Re: loader for 2750 john deere in reply to BIGBADDEERE, 09-25-2012 14:21:59  
Quoting Removed, click Modern View to see

A 245 is a good match for a 2750. How much $$$$ and does it have JS hyd controls??



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8850dave

09-26-2012 05:01:08
198.229.237.149



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 Re: loader for 2750 john deere in reply to BIGBADDEERE, 09-25-2012 14:21:59  
I have a JD245 loader that would bolt right on with new mounting brackets and joystick control with good bucket located in Northern Illinois.



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Tx Jim

09-26-2012 04:19:32
67.142.163.21



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 Re: loader for 2750 john deere in reply to couv, 09-25-2012 14:21:59  
Quoting Removed, click Modern View to see

B&D

Please explain how a lifting a heavy load will cause the power steering and rockshaft to operate on a closed center tractor with an open center valve?? I don't understand what a heavy load has to do with that. I could make either the PS &/or RS operate with no load on the loader but don't understand your heavy load concept. Thanks,Jim.

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buickanddeere

09-26-2012 07:15:09
184.151.61.26



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 Re: loader for 2750 john deere in reply to Tx Jim, 09-26-2012 04:19:32  
If the loader is connected downstream of the priority valve then yes the PS will operate. The rock shaft won't have high pressure oil unless the loader is restricting flow via lifting a load and increasing pressure



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Tx Jim

09-26-2012 04:05:50
67.142.163.21



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 Re: loader for 2750 john deere in reply to Craig C, 09-25-2012 14:21:59  
Quoting Removed, click Modern View to see

On a closed center hyd system the oil pressure is maintained in the lines by being blocked by each hyd control valve and the hyd pump stops building pressure. When a hyd lever is moved then oil flows through hyd control valve to operate a function and immediately hyd pump starts back building pressure until the hyd valve is closed. Hence the name closed

When JD introduced closed center hyd systems at their sales meeting JD rep's claimed that a closed center hyd system saved fuel because hyd oil wasn't continuously being pumped.

In contrast on an open center the pump pumps oil constantly,oil flows through each control valve and then the required valve diverts the oil to operate required hyd function.

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Tx Jim

09-25-2012 15:37:12
67.142.163.20



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 Re: loader for 2750 john deere in reply to Walt In Jaxn Tn., 09-25-2012 14:21:59  
As previously stated be sure control valve is closed-center type.



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TractormanNC

09-25-2012 14:53:49
108.72.58.200



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 Re: loader for 2750 john deere in reply to BIGBADDEERE, 09-25-2012 14:21:59  
Have an Allied 595 on an open station 2750. LOVE IT. It came off a 770 case. Had to make a few spacers and drill a few holes.

Biggest problem we had was finding a closed center plug to convert the valve from open center to closed center. If the loader came off a tractor with open center hyds, crank down the relief valve so it"s not always bypassing oil. Plumb it up like many posts have talked about.

If you don"t already have them, find a set of "cultivator mounts" flat steel plates about 1/2"thick by about 6" wide that connect the steering support to the clutch housing on both sides of the engine.

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BIGBADDEERE

09-25-2012 17:32:55
99.119.245.184



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 Re: loader for 2750 john deere in reply to TractormanNC, 09-25-2012 14:53:49  
what do you mean by closed center type..



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buickanddeere

09-25-2012 18:28:14
216.183.146.134



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 Re: loader for 2750 john deere in reply to BIGBADDEERE, 09-25-2012 17:32:55  
An open centre valve on the closed centre Deere system will make the pump run 100% capacity all the time . Power steering and rock shaft will quit working unless the loader is lifting a heavy load. Use a "T" from the high pressure line to supply the loader valves . Return the loader oil to a ported filter cover on Dubuque and Mannheim tractors. As txjim pointed out, the Waterloo tractors can use a T into the rockshaft return line.

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