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IH 340 utility hydraulics

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Doug Warner

07-24-2007 18:14:37

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I"m not sure if the hydraulics system is set up correctly on this tractor. When it is started, it starts easier when I lift the loader. It acts like it is fighting itself and when the loader is lifted it eases the strain. It has a cam driven hydraulic pump and 3 control valves by the shifter. The loader valve (the middle one) is "pinned" in and the bucket and 2-pt hitch (the two outer valves) are "pinned" out. Is this correct? The hydraulic lines get so hot that they will literally burn you. I know that it getting hot is not right and it seems like it isn"t right that the engine is so strained when just idling until you actuate one of the hydraulic functions which causes it to run better. I don"t want to use it like this for fear of causing damage but I need HELP! I need some direction on what to do to try to track down the problem. HELP ME PLEASE?

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Al L. in Wisc.

07-26-2007 10:23:25

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Re: IH 340 utility hydraulics in reply to Doug Warner, 07-24-2007 18:14:37

Doug, I had an International 240 that had such a hot hydraulic pump it immediately blistered the "hide" on the mechanics hand when he touched it. Problem was diagnosed as a plugged screen in one of the hydraulic valves (as JJ has setting on the "unused" kitchen counter top). Yup, the heat is bad as it can ruin the pump. Possible one of the small pins is broke? When the pump is "used" by operating a lever, pressure flows through the system and thus no straining same. You won"t want to run it for long, but if you need to move the tractor, hold one of the levers allowing the system to operate and it shouldn"t over heat, note I said shouldn"t. Good luck and keep us posted.

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Doug Warner

07-26-2007 12:24:15

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Re: IH 340 utility hydraulics in reply to Al L. in Wisc., 07-26-2007 10:23:25

Thanks guys. I guess I am just going to have to tear it apart and check things out. Sounds like a weekend project. Wish me luck.

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Doug Warner

07-25-2007 11:05:50

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Re: IH 340 utility hydraulics in reply to Doug Warner, 07-24-2007 18:14:37

Aha! A Picture for you... :o)

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Doug Warner

07-25-2007 11:17:32

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Re: IH 340 utility hydraulics in reply to Doug Warner, 07-25-2007 11:05:50

A Pic further out...

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Doug Warner

07-25-2007 10:17:24

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Re: IH 340 utility hydraulics in reply to Doug Warner, 07-24-2007 18:14:37

Hi guys. The pictures help JJ. I can't figure out how to add pictures in here myself. ???

As far as what is "pinned" in position, I am referring to the ends of the control spools located on the valve. I don't know if these are supposed to be locked into the positions that they are. If I could add a picture myself, I could show you what mine looks like. I have 3 and the outer two are "pinned" out like in your picture JJ, but the middle one is all the way in.

But like I said before, my main concern is that the hydraulic lines are getting so hot and the tractor acts like it is under a load until you actually use one of the attachments. This I need to remedy. Tractors are not my specialty. I know about everything else under the sun (cars, bikes, etc) but this is out of my comfort zone.

Your help is greatly welcomed and appreciated.

If you would like to call me, Mo, (or JJ too for that matter) feel free. My home phone is 616-897-3133. If direct email is better, you can do that too.... redarrowpride@aol.com
Thanks so much!!!!

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Larry in Mo

07-24-2007 20:51:50

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Re: IH 340 utility hydraulics in reply to Doug Warner, 07-24-2007 18:14:37

Doug; after re-reading your 1st post the thing I got to thinking about was your comment about "valves by the shifter".If what your talking about is like the 2nd picture JJ posted, those are the actual valve bodies the controll levers are hooked to that are shown in the 1st pic JJ posted. The shaft that extendes from the valve body controlls the flow for either single or double action cyls. Turn ccw, or up for double action(pressure both ways) or cw for single action. Now if you have hyd lines going to both ends of all hyd cyls they are double action, and the control valve pin should be set accordingly. Your loader should be getting its hyd power from the two ports on each side of the tractor, usually with quick disconnects on them. If this isnt the case,someone has rigged another system. If you want, email me your phone number and i'll give you a call. lee123@dishmail.net . LE

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J.J. from Afton

07-24-2007 19:48:00

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Re: IH 340 utility hydraulics in reply to Doug Warner, 07-24-2007 18:14:37

Doug are you refering to the hyd. levers shown here being locked in position by the detents, or

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J.J. from Afton

07-24-2007 19:51:27

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Re: IH 340 utility hydraulics in reply to J.J. from Afton, 07-24-2007 19:48:00

Or are you referring to the ends of the control spools located on the valve assembly like the ones shown here?

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Larry in Mo

07-24-2007 19:13:34

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Re: IH 340 utility hydraulics in reply to Doug Warner, 07-24-2007 18:14:37

All of the hyd levers should be returned to the neutral position. This is to allow the fluid to flow thru the open centers of the valves to return to the reservoir and cooler. The only reason that the 2 valves would be "pinned" or fastened in one position, would be to feed another valve that has been added to controll another circuit. I'd get all valves returned to the neutral position, and then see what you have. Can't see why someone would do that to cure another problem. LE

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Doug Warner

07-24-2007 19:23:27

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Re: IH 340 utility hydraulics in reply to Larry in Mo, 07-24-2007 19:13:34

Hi Larry. Not sure if I understand you correctly or vise-a versa. I
What I am referring to that is "pinned" open are the control spools. If this is the same thing you are referring to, what would be the "neutral" position? I'm not sure I want to try to take those pins out unless I am really certain that they should not be pinned that position.

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