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Case Tractors Discussion Forum
Show Parts for Model:

DC Sleeves are out #128076;

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Dacaseguy

01-01-2018 17:21:23




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I got the sleeves removed out of my DC 4 today. Good way to start the new year I figured. I only wanted to do a valve job and replace the piston rings. I figured I better check the sleeve O Rings and go ahead and put rings in it. Being a 1953, I was surprised it was 3 7/8 Pistons instead of 4 inch? Got the sleeves back in with new O Rings with a little help from som Vaseline. Kept the wood stove going and it was nice and toasty. Dick

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kevinthefixer

01-03-2018 17:54:55




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 Re: DC Sleeves are out #128076; in reply to Dacaseguy, 01-01-2018 17:21:23  
From the looks of the old 0-rings, replacing them was a good plan.



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Ron Sa

01-03-2018 08:38:03




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 Re: DC Sleeves are out #128076; in reply to Dacaseguy, 01-01-2018 17:21:23  
One of the DCs I bought from a junk yard was leaking antifreeze into the oil. My further inspection showed the sleeves and pistons to be almost brand new and the leak was coming from around one of the sleeve o-rings. I concluded the o-ring groove was not properly prepared for a new o-ring. It was sad that this tractor got junked because of mechanic neglect to properly re-assemble.

We all know the o-ring grooves are hard to inspect and hard to clean. To seal properly, the OD of the groove must be VERY CLEAN AND NOT PITED. We all know that age creates curd and rust pits in these grooves.

I clean and re-clean these groves but pits remain. I find that a thin coating of non-hardening Permatex, applied to the groove OD, is good insurance against rust pits allowing the new o-ring to leak.

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Dacaseguy

01-02-2018 18:32:03




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 Re: DC Sleeves are out #128076; in reply to Dacaseguy, 01-01-2018 17:21:23  
Not sure how my other post said I've used gasoline ? I think the computer corrected me. It should have said Vaseline not gasoline 🙀 Dick



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dcinillinois

01-02-2018 13:31:00




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 Re: DC Sleeves are out #128076; in reply to Dacaseguy, 01-01-2018 17:21:23  
I have heard and have used dish soap to lube o- rings not sure about Vaseline as it is petroleum based and might break down o-ring any thoughts on this as when I break down my dc-3 I will want to do it right so any help would be great thanks did not mean to highjack any ones post

thanks Bob



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Ron Sa

01-03-2018 08:51:54




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 Re: DC Sleeves are out #128076; in reply to dcinillinois, 01-02-2018 13:31:00  
The bottom side of these O-rings is exposed to motor oil. They have to be oil resistant.



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Dacaseguy

01-02-2018 15:58:45




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 Re: DC Sleeves are out #128076; in reply to dcinillinois, 01-02-2018 13:31:00  
I've always used gasoline ? God or bad, I don't know. These new O Rings will outlas me, I know that much. I've done several case tractors using Vaseline. Dicl



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Don Rudolph

01-01-2018 18:40:57




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 Re: DC Sleeves are out #128076; in reply to Dacaseguy, 01-01-2018 17:21:23  
Dick,

Does your motor serial number match your plate under the battery? Does your engine serial number have AP stamped before or after the number? Do you happen to have the buildcard info? Thanks, Don



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fixerupper

01-01-2018 18:32:49




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 Re: DC Sleeves are out #128076; in reply to Dacaseguy, 01-01-2018 17:21:23  
Replacing the Orings is good preventative maintenance. I had to replace the Orings in my SC after i found antifreeze in the oil pan. They held out for a good many years though.



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tomturkey

01-01-2018 18:06:35




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 Re: DC Sleeves are out #128076; in reply to Dacaseguy, 01-01-2018 17:21:23  
Can you give us a few shots of the rod bearings as long as its apart. Just curious to how they look. You did not mention replacing them as you are only doing a valve job lol gobble



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casecollectorsc

01-01-2018 19:16:35




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 Re: DC Sleeves are out #128076; in reply to tomturkey, 01-01-2018 18:06:35  
Rod bearings on a DC Case are poured babbit not shell inserts.



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