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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

IH 3515 backhoe Dual hydro pumps???

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dwragon

12-30-2020 00:29:46




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I have an IH 3515 industrial backhoe (not the 3514 A414 based Loader). I cannot find anything about this backhoe online. A filter collapsed and parts of the element was washed into the hydraulic system. It will run and drive and steer, but none of the other hydraulics will work. I was told they backhoe may have two pumps, but I have no idea where they would be, or if I might have material plugging a line somewhere else. Any knowledge or suggestions would be appreciated.

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dwragon

01-01-2021 19:56:33




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 Re: IH 3515 backhoe Dual hydro pumps??? in reply to dwragon, 12-30-2020 00:29:46  
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Thanks MikeJM, saw this after the other reply. No stinger pump on the front, I would have seen that when I replaced the radiator. It definitely ate part of the filter, collapsed it and washed it away, which I found when I replaced the filter. Part of my problem on figuring it out is that I am 300 miles from it, and talking to the guy who lives on the property where it is. Got interrupted by a separation from a cheating ex GF, then married a Filipina IN the Philippines where I am now under quarantine and have alot if time to benchracing. The first thing I will do is pull the pumps plate now that I have found a diagram here on it.

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dwragon

01-01-2021 19:43:42




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 Re: IH 3515 backhoe Dual hydro pumps??? in reply to dwragon, 12-30-2020 00:29:46  
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Thank you, this one is a diesel. The tractor runs good, though I havent been able to drive it (previous owner loaded it on the trailer, no brakes). The 504 info is especially appreciated, I had not been able to find out what it was based on, only that the manuals lump it with a 3616. I may be wrong about hydro to the trans. Hoping it is full manual, I hate autos of any kind. Comfortable with a 4 stick, I have 2 JD 400's I bought before I figured out that I like Case IH stuff better.

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MikeJM

01-01-2021 19:03:35




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 Re: IH 3515 backhoe Dual hydro pumps??? in reply to dwragon, 12-30-2020 00:29:46  
BTW, the 3514 is a 504 based machine. Diesel would have had the D188 and gas a C153.
Torque converter drive or clutch and shuttle reverser, not a power type setup, had to stop and shift. Not sure if they ever used the hydro trans in the backhoes.
Torque converter drive had two pedals on the left side, forward and reverse, both tied to the throttle.
It was a good machine and would dig like crazy if you could run a 4 stick machine.
There was one hydraulic filter that was a bear to change, only went in one way.

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MikeJM

01-01-2021 18:57:19




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 Re: IH 3515 backhoe Dual hydro pumps??? in reply to dwragon, 12-30-2020 00:29:46  
I grew up on a 3514.

theres a front engine driven pump that provides oil for the front loader and all but the swing function on the backhoe. If thats the problem, I suspect the splines have stripped and its not turning anymore. Might have even ate some filter.
The rear pump has a diverted valve to the right of the seat to switch from steering to swing the backhoe.
And if you have the torque converter drive machine it has its own pump for clutch pressure and to fill the converter.

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AJ.

12-30-2020 02:16:44




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 Re: IH 3515 backhoe Dual hydro pumps??? in reply to dwragon, 12-30-2020 00:29:46  
Find the main regulator valve it maybe stuck open with trash, I do not know where it's located in your machine but usually on backhoes it is in the valve chest for the front loader.

AJ



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dwragon

12-30-2020 20:20:52




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 Re: IH 3515 backhoe Dual hydro pumps??? in reply to AJ., 12-30-2020 02:16:44  
Thank you AJ, I will look there. Still hoping someone can tell me if this unit has two pumps though, it would eliminate alot of questions.



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Bob Bancroft

12-31-2020 01:32:23




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 Re: IH 3515 backhoe Dual hydro pumps??? in reply to dwragon, 12-30-2020 20:20:52  
I know nothing about your unit. My 3444 had two pumps. Main crankshaft driven one down front, and engine mounted power steering pump. There was a diverter valve which switched the oil flow from the power steering to the main hoe valve, where it assisted the swing.



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dwragon

12-30-2020 21:39:48




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 Re: IH 3515 backhoe Dual hydro pumps??? in reply to dwragon, 12-30-2020 20:20:52  
Correction, it is an IH 3514 industrial backhoe, not the 3414 A414 based Loader.



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