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IH 424 Lift Hydraulic Problem

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Darryl in KY

06-08-2007 16:05:52

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I was using my 424 earlier this spring to disk my garden using a 6' 3-point disk. No strains were put on the lift doing so. Anyway, part way through, it would not lift the disk properly, could only lift the front off the ground. I searched in the discussions here and figured that the seal on the cylinder was blown. I took it to a mechanic to have it replaced because I didn't want to tackle it myself (I've never worked on hydraulics before). The seal was indeed blown out, looking like it had been overloaded. He got a new one from IH and replaced it. I paid him and brought the tractor home. When I hooked it up to my 6' bushhog that day, it lifted fine, but here was a problem. The lift would surge -- go up and then sink down a few inches and then go up and sink down, etc. It also couldn't hold itself up when shutting off the tractor, even when I closed the valve.

I took the tractor back to the guy who worked on it. He's torn it apart, replaced a couple o-rings but says he can't figure out what the problem is. He talked to someone who 'worked on these tractors' about it and was told "Good luck" and "No one really knows how to fix that."

So, I come to you, the experts, for any input/info you can contribute. Previously, the lift was rock-solid. It never jerked and it never let down after turning the tractor off. There is no remote outlet on the tractor. No power steering either. The problem began under very limited load (a disk), although it was it's first use of the season. Oh yeah, the draft control on the lever has always been frozen in place with the lever since I've had the tractor (about 4 years), but that's not previously been a problem.

I would like to have it working properly, but I don't know what to think or do. Any help would be appreciated.

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40cpe

06-09-2007 07:47:06

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Re: IH 424 Lift Hydraulic Problem in reply to Darryl in KY, 06-08-2007 16:05:52

If it drops with the isolator valve closed it is a pretty good indication that it is leaking by the lift piston unless the isolator valve is bad. The isolator valve does just that, it isolates the cylinder from the rest of the control valves. With the help of a Blue Ribbon manual I went completely through mine and it was rock solid afterward. It is a little intimidating to look at it, but with close attention you can do it with the books.

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Bob

06-08-2007 20:42:27

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Re: IH 424 Lift Hydraulic Problem in reply to Darryl in KY, 06-08-2007 16:05:52

That lift is SO complicated, and it is NOT a high-production tractor, so I doubt ANYONE on this site can be of much help troubleshooting it "remotely", unless you're REAL lucky, and someone is "in depth" familiar with it.

I have made some minor adjustments to mine, and it works well, so I am NOT familiar with all the mojor stuff that can go wrong.

Another guy (in IL) is having 424 lift problems, and saw a reply of mine on this site, and asked to borrow my 424 3-point hitch Blue Ribbon Service manuals. I have an extra set, and have agreed to loan them to him, for a short time.

When I get them back, if you haven't solved your problem, I would be willing to loan them to you.

The are VERY detailed, and SHOULD explain how to troubleshoot and repair about ANY problem with the system.

Or, watch ebay for the manual and supplement, or contact Binder Books about ording a set from them.

I'll try to post back with the manual #'s, as I don't have them "at hand" at the moment.

email is open.

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