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Repairing Eroded Wet Liner Lower Sealing Surface.

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Jim Maxwell

08-08-2002 16:55:48




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I have a JD2140 which has just begun to show coolant in the oil pan (8000 hrs.) Through testing I determine that liner #1 was leaking at the lower seal area. The coolant seal on liner #1 had ruptured and #2, #3 & #4 would have failed shortly. The problem was caused by the erosion of the lower coolant sealing surface in the block.
Does anyone know of a "Liquid Metal" compound which bonds well to Cast Iron and/or has already repaired a similiar sealing surface.

N.B. All four liners have failed in exactly the same location, 90 degrees cw from the crank, opposite the camshaft - interesting!

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Jonathan

08-11-2002 05:19:20




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 Re: Repairing Eroded Wet Liner Lower Sealing Surface. in reply to Jim Maxwell, 08-08-2002 16:55:48  
Hello...I've repaired several blocks with Devcon . It was the option the customer chose as opposed to block replacement. It seems to have worked for those applications. The key is getting the grooves clean and being patient when restoring the area to its original "shape" . I've used a small cut-off wheel on a die grinder to get into the o-ring grooves to shape the hardened material, then go over it by hand with emery cloth etc. Due to the engine rotation the porous spots are usually on the cam side. Its usually attributable to questionable quality anti-freeze.

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Jim @ MarKan Farms

08-11-2002 13:11:40




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 Re: Re: Repairing Eroded Wet Liner Lower Sealing Surface. in reply to Jonathan, 08-11-2002 05:19:20  
Jonathan,
Thanks for your reply. I've tracked down someone in my general area that has had good success using "JB Weld". He's coming for a visit some night once I get my new Liners and together we'll give it a shot. I'll let you know how it turns out. Thanks again,
Jim M.



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Don Young

08-10-2002 21:44:01




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 Re: Repairing Eroded Wet Liner Lower Sealing Surface. in reply to Jim Maxwell, 08-08-2002 16:55:48  
I guess a lot depends on the value of the tractor and the cost of another block. I don't have direct experience with this situation but the lower sleeve sealing area should be relatively benign without any high temperatures or pressures.
Devcon and Loctite make build-up and sealing products for lots worse situations. Contact them, or be brave and clean GOOD (sandblast) and use JB Weld and/or red silicone sealer.

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Jim @ MarKan

08-11-2002 13:15:41




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 Re: Re: Repairing Eroded Wet Liner Lower Sealing Surface. in reply to Don Young, 08-10-2002 21:44:01  
Don,
I've been able to locate someone with experience using "JB Weld" and we are going to give it a try.
Thxs,
Jim M.



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Jim@MarKan

08-09-2002 14:26:00




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 Re: Repairing Eroded Wet Liner Lower Sealing Surface. in reply to Jim Maxwell, 08-08-2002 16:55:48  
Gentlemen, [Dr. Evil, GPWT, G Taylor & John]
Thanks for your replies. My problem is erosion of the "BLOCK". I agree the liners are a throw away item.
Has anyone had "success" in building back up an eroded sealing surfaced with any of a variety of "Cold Welding Bonding Compounds"?
Thxs.
Jim



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G Taylor

08-09-2002 15:41:11




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 Re: Re: Repairing Eroded Wet Liner Lower Sealing Surface. in reply to Jim@MarKan, 08-09-2002 14:26:00  
The block likely has corrosion under crud deposits. Contributed by acidic coolant and contamination from exhaust leaks into coolant. Time to hurl the block into the recyclers bin.



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Dr. Evil

08-09-2002 12:58:47




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 Re: Repairing Eroded Wet Liner Lower Sealing Surface. in reply to Jim Maxwell, 08-08-2002 16:55:48  
The erosion is in the block Not on the sleeves right? That's a tough one.



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GPWT

08-09-2002 10:33:12




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 Re: Repairing Eroded Wet Liner Lower Sealing Surface. in reply to Jim Maxwell, 08-08-2002 16:55:48  
This sounds like either acidic antifreeze (too old) or cavitation (again, antifreeze too old). I'd replace the liners and use good quality, HD antifreeze.



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G Taylor

08-08-2002 19:47:00




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 Re: Repairing Eroded Wet Liner Lower Sealing Surface. in reply to Jim Maxwell, 08-08-2002 16:55:48  
How old was the coolant and what ph did it measure?



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John

08-08-2002 18:50:40




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 Re: Repairing Eroded Wet Liner Lower Sealing Surface. in reply to Jim Maxwell, 08-08-2002 16:55:48  
Replace the liners, dont try to repair them. Not that it cant be done, it will not be a lasting fix. The deere rebuild kits are relatively inexpensive and with 8000 hrs your about due for a rebuild anyway.



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