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Farmall & IHC Tractors Discussion Forum
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IH 340 no p/s or rear hydraulic lift

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Paul A. Bourqui

07-24-2005 12:55:59




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OK, Here's what I've got. I have an early 60's IH 340, not a farmall. It is supposed to have power steering. It has an engine driven hydraulic pump, bolted on the right front of the motor. When I got the tractor, the resevoir ( trans) was low. I filled it up to the top, and while filling it, oil started to shoot out the engine dipstick tube. Checked the engine oil, it now was WAY overfilled. I removed the hydraulic pump from the engine, found a front seal leaking badly. Replaced it with a known good used pump, packed it full of vasoline. I also removed the two hydraulic lines that run from the pump to the hydraulic unit under the gas tank and replaced all orings. The was also a device that sort of looked like an automotive oil pressure switch, but all the guts were gone and it was an open hole into the hydraulic system. I removed it and brass plugged the hole. Was told it may have been a pressure relief valve at one time? There is also another valve, held in by a C clip, in the top of the hydraulic unit under the gas tank. That was leaking as well, so I replaced the oring seal. How come, after all this, I have no p/s and no rear lift either? Is there a special bleeding procedure I need? I have seen filter replacement mentioned at times....where is it supposed to be? ANY HELP IS GREATLY APPRECIATED!!!!! !!!! Paul 410-771-4405

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Paul A. Bourquin

07-26-2005 13:04:23




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 Re: IH 340 no p/s or rear hydraulic lift in reply to Paul A. Bourquin, 07-24-2005 12:55:59  
Hi everyone. I have uploaded my pics about this problem to the tractor parts photos section on this website. Let me know if you can't find them, send me your email and I'll forward them to you directly. Paul Bourquin



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Hugh MacKay

07-24-2005 15:03:46




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 Re: IH 340 no p/s or rear hydraulic lift in reply to Paul A. Bourquin, 07-24-2005 12:55:59  
Paul: To start with the 340 factory hydraulic system that operates hitch and power steering has the pump in the torque tube and draws it's oil from transmission. The pump bolted to front of motor must be an add on for a loader and will have it's own resovoir, probably in loader frame.

Having said this 45 years has past since that 340 was new and who knows what plumbing nightmare someone may have geared up. The 340 if factory original, has no way of oil going from hydraulics to the crankcase. The pre 1958 300 and 350 had pump mounted between distributor and timing gears and yes those could leak hydraulic oil into crankcase. Something is just not adding up with this tractor. You'll have to either post some photos or give a lot more detailed description.

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Paul Bourquin

07-26-2005 12:37:58




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 Re: IH 340 no p/s or rear hydraulic lift in reply to Hugh MacKay, 07-24-2005 15:03:46  
OK, I have taken some pics, and as soon as I figure out how to store them online, I'll let you know. I can tell you that there is a FRONT mounted hydraulic pump that operates the front end loader. That works fine. IT does appear that someone has done some "spedcial" engineering on this unit, there is something missing on the left side of the hydraulic control located under the gas tank. Pics coming soon.

Paul

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Hugh MacKay

07-26-2005 16:09:03




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 Re: IH 340 no p/s or rear hydraulic lift in reply to Paul Bourquin, 07-26-2005 12:37:58  
Paul: I have looked at all your photos. First I must say Pete is correct, I have never seen one of these pumps mounted under distributor on a 340. The C-135 engine though would have provission for such a pump. The front pump I refered to in my earlier post is the pump which operates your loader, and yes those were very common especially with Wagner loaders.

On the left side photo of control valves, someone has at some point removed a valve. That shouldn't affect any operation of balance of system. My e mail is exposed, could either post or send me a photo of the right side of torque tube, basically 1' fore and aft of brake pedals. I realize this may be a difficult photo as loader may obstruct a bit. I'm looking for what I know to be common on 340 tractors.

Getting back to your original problem, my first reaction is pump problems on pump that powers steering and rear hitch. I'm still not completely satisfied your tractor is factory original, just might be some backyard engineering in there. Since your going to be doing more photos take one of hitch at rear, including any remote rear hydraulic outlets.

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Catskill Pete

07-24-2005 18:40:49




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 Re: IH 340 no p/s or rear hydraulic lift in reply to Hugh MacKay, 07-24-2005 15:03:46  
Hugh I"ve got to disagree with you about the pump. The 340 varies a lot on how its equipped, depending on what the dealer ordered. You could get it equipped with a 9 gpm engine mounted pump, mounted underneath the dist/ governor. Or you could get the 12gpm pump mounted in the transmission. Lot"s of variations depending on how it was ordered, 3 different hitches, two different pto options and at least 2 differnt hydraulic setups.

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Hugh MacKay

07-25-2005 16:47:31




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 Re: IH 340 no p/s or rear hydraulic lift in reply to Catskill Pete, 07-24-2005 18:40:49  
Pete: I think your dreaming, pto did change during production, with dismal sales they did try offering 3 point hitch as opposed to fast hitch. I expect if an engine mounted pump was added it was done by a dealer to give a separate pump for a loader. Companies were big on that in that era.

Now I've never seen a whole lot of 340s Utility or Farmall but then there were less than 20,000 of them worldwide. Just another case of IH flogging a dead horse or was it fast hitch too long.

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JB2

07-24-2005 16:47:42




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 Re: IH 340 no p/s or rear hydraulic lift in reply to Hugh MacKay, 07-24-2005 15:03:46  
Hi Paul, I'm not familiar with 340 but we had a 300U back in the late 50's and it had a screen on the suction line of the hydraulic pump. This screen would become clogged and stop all hydraulic function. The screen is located in the reservoir under the seat. Now if the 340 is the same with the hydraulic reservoir under the seat and the hydraulic control valves located at your right hand beside the seat, then you have to remove the seat, then there is about a dozen bolts around the perimeter of the top of the reservoir that have to be removed, then you can remove the top of the reservoir.

CAUTION: The top of the reservoir is VERY HEAVY and it has to be lifted straight up to prevent damaging the hydralic suction screen.
It has been 40 years since I last did this so
check the archives, I believe someone had given great details how to remove and clean this screen for 300/350U.

JB2

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Hugh MacKay

07-24-2005 17:36:32




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 Re: IH 340 no p/s or rear hydraulic lift in reply to JB2, 07-24-2005 16:47:42  
JB: the hydraulic system on a 340 is completely different from 300 and 350, gone is the screen and replaced by a filter behind a removable plate on the side of torque tube.



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JB2

07-24-2005 18:07:30




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 Re: IH 340 no p/s or rear hydraulic lift in reply to Hugh MacKay, 07-24-2005 17:36:32  
Hugh, thanks for info on 340. Only worked on 300/350Us.

JB2



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