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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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Sealing Sleeves in Pitted Block

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smerr

02-12-2007 20:31:03




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I'm overhauling an 1800A diesel engine. The area in the block where the sleeve o-rings seal is extremely pitted. What can be done? I'm thinking about using a high temperature silicone sealant to ensure a seal. I'm sure this is a common problem. Any suggestions or comments?




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Nusbaum Farms

02-13-2007 10:21:18




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 Re: Sealing Sleeves in Pitted Block in reply to smerr, 02-12-2007 20:31:03  
I just found the same problem with my 1755 block. I had new lower inserts installed. Inserts cost $22 ea. Installation & machining @ $55 ea. Total cost $462. Total cost of entire overhaul @ $4500. Inserts = 10% of project cost but I don't have to worry about water in my oil any more. Personally I wouldn't be too happy if I had the same problem after the overhaul as I did before. Only you can determine how much risk you want to take. Good luck either way.

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dad's88

02-13-2007 18:37:08




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 Re: Sealing Sleeves in Pitted Block in reply to Nusbaum Farms, 02-13-2007 10:21:18  
Personally, I think this is the right way to go. Just had this operation done on the Super 88 which has been in the family since day one. Had it performed on the 1750 back in 1985. You did the right thing. Now if it's not a family tractor, perhaps I can be satisfied with something less?



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ejr-IA.

02-13-2007 08:52:20




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 Re: Sealing Sleeves in Pitted Block in reply to smerr, 02-12-2007 20:31:03  
I have done it both ways, on a realy pitted one i'd put in a new counter bore sleeve.If minor go with the epoxy and sealer.



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rrlund

02-13-2007 07:05:20




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 Re: Sealing Sleeves in Pitted Block in reply to smerr, 02-12-2007 20:31:03  
Just my 2 cents worth,for what it's worth. I'd have it turned out and shimmed at a machine shop so that I wasn't on pins and needles everytime I used it.Easy for me to say I guess,my son works in an engine machine shop.



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djm75

02-13-2007 03:35:28




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 Re: Sealing Sleeves in Pitted Block in reply to smerr, 02-12-2007 20:31:03  
use jb weld then sand it smooth works great.



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m kuhns

02-13-2007 07:31:21




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 Re: Sealing Sleeves in Pitted Block in reply to djm75, 02-13-2007 03:35:28  
You didn't here this from me. I work at a Cat dealer and we use epoxy or JB weld to repair blocks that have erosion. THis has been common practice. Never had any problems yet. I put a 310 in our 1655 6 years that was a donor engine. It was getting water in the oil. The only thing I found wrong was a groove where the upper liner O/R was seaing and JB welded it. We use the 1655 a lot and we haven't had any problems yet.

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MIKE FRENCH

02-12-2007 21:12:08




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 Re: Sealing Sleeves in Pitted Block in reply to smerr, 02-12-2007 20:31:03  
I have used hi-temp silicone several times with no problems, good luck.



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