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Allis Chalmers Discussion Forum
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B coolant leak

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Broken B

11-02-2009 12:20:07




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My B has a coolant leak low in the block in front of #1 cylinder can"t be sure if its coming past the o-rings looks like it may be from around the timing cover water pours out as fast as I pour it in the block . . . anyone with tips on what to look for or check?




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rdrash

11-03-2009 07:43:54




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 Re: B coolant leak in reply to Broken B, 11-02-2009 12:20:07  
I got mine at an agco dealer. I don't think they r hard to find.

Trevor



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bg/mo

11-02-2009 12:54:15




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 Re: B coolant leak in reply to Broken B, 11-02-2009 12:20:07  
have you checked the water pump?



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Broken B

11-02-2009 13:32:40




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 Re: B coolant leak in reply to bg/mo, 11-02-2009 12:54:15  
No I haven't . . I don't think it's the WP because it starts leaking into the front of the crankcase as soon as I start pouring water into the block . . have already pulled the head, oil pan, and pistons 1 & 2 to get it unstuck now trying to figure out where the leak is looks like its coming from the timing cover right on to the front main



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DickL

11-02-2009 18:54:06




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 Re: B coolant leak in reply to Broken B, 11-02-2009 13:32:40  
Old o rings are hard and have no elastic ability after being moved even a small amount and will not reseal. My guess would be that the sleeve moved while removing #1 piston and will have to have new o rings on it.

Learned a little trick for any make wet sleeve to make sure it does not move, old or new, with a washer and short cap screw. Shown in the picture.

third party image

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Broken B

11-03-2009 07:06:16




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 Re: B coolant leak in reply to DickL, 11-02-2009 18:54:06  
It had a leak before driving out the pistons but now I can't be sure where it's coming from I probably did loosen up the O-rings . . does anyone know where I can get replacement O-rings? have looked around online but haven't had any luck



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DickL

11-03-2009 08:01:29




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 Re: B coolant leak in reply to Broken B, 11-03-2009 07:06:16  
Way to many unknowns. You could very well guess you have found the problem and when it is back together it still leaks.
I am not a fan of guessing if every thing might be good. I personally like to see it.
As far as the O rings, I keep them on hand by buying 50 at a time. Send me an email to betterlife55 at yahoo dot com and we can figure out how to get some to you.

I, (myself would) remove all the sleeves and make the block look like the one in the picture and look for cracks in the lower O ring sealing area before starting to re assemble.

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