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Farmall & IHC Tractors Discussion Forum

Rebuilding a IH cylinder

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Randy as in Ran

04-26-2007 20:10:18

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Hi All , I picked up a 3-1/2" cylinder at auction and when I drained the old oil out it had some crud in it . I'd like to take it apart and see what it looks like inside and maybe put new seals in . I don't think it's worth putting much money into it because the shaft is a little rusty with some very small pits . The cylinder cost me 10 bucks so I wouldn't mind getting some use out of it . I don't want to hook it up till I know it's clean inside . Anybody ever done this that could give me some insight on how it comes apart and what the torque would be on the long outside bolts when I put it back together ? Thanks ! ...Randy

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JayWalt

04-27-2007 05:06:05

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Re: Rebuilding a IH cylinder in reply to Randy as in Randy-IA, 04-26-2007 20:10:18

a pitted ram on a one way cylinder is of little consequence. if the main seal/packing is in good shape there will bne little "blowby" that the wiper would have to clean off the ram. the wiper seal might get damaged over time, but this area is not pressurized. Not sure If I would waster the $45 on a kit for a 2 way cylinder with a pitted ram. You can buy new cylinders for about $100 depending on stroke, they have them at TSC.

If you're main concern is gunk, just pour some fluid in the hole and work the ram back and forth a bit with the hole at the top, then turn it upside down and let the gunk come out, do that a few times or until the gunk stops coming out. I wouldnt tear it apart for the $45. Now u can probly get new orings for the ends for under $5 or there abouts, then just pull the 2 ends off and clean it without removing the ram from the cylinder bore.

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J.J. from Afton

04-26-2007 20:35:24

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Re: Rebuilding a IH cylinder in reply to Randy as in Randy-IA, 04-26-2007 20:10:18

I rebuilt the 3 1/2" lift cylinder on our 340 Utility. Taking it apart was real easy. After you take the 4 outside bolts off you can pull the two end caps off. Than you have to remove the nut on the bottom of the ram. All the O-rings, backup rings, and dust shield came together in a kit. If I remember correctly there were 6 or 7 orings, 6 or 7 backup rings and the dust shield. 2 of the O-rings were for the hydraulic pipe that runs between the end caps on our cylinder. The bad news is the kit cost like $45 from CaseIH.

When you put it back together you have to have assembly lube or hydraulic oil to make the parts slip back together alot easier, and prevent the O-rings from being chipped or spun around The hardest part was when you pull the cylinder end caps together you have to be real careful not to ruin the backup rings, oherwise you get to take it back apart and buy more rings for it.

I am not certain wether there was a torque spec or not but I want to say that there was and I think it was 90lbs.

Now as for the rust and pitting I am sure the cylinder will still work, When I saw the one on my grandpas IH snowblower I didn't think it would work, and it was really pitted because it had been left exposed to the elements for years and years. Well it doesn't leak and I never had to rebuild it.

Hope this helps ya.

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