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Case Tractors Discussion Forum
:

830 Case - Cracked block, sleeve - coolant problem?

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uppercanada

09-16-2009 21:06:30




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1968 830 Diesel Comfort King Case-o-matic:

When the engine just starts to get warm - 30 or so seconds after starting it - coolant (cold) pushes out around the rad cap (new cap) and through the overflow tube uncontrolably. There is a bit of coolant getting into the oil as well. Previous owner took it to a shop and all they did was re-surface a head (which I am sure had nothing to do with the problem)

I assume it has a thermostat, but even if the thermostat was locked open or shut the coolant should still flow either way and not come out the top of the rad forcefully?

Re-assembled the head incorrectly? Engine sounds fine otherwise. At a loss.

Any ideas ? Thanks!

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wisconsin

09-22-2009 14:00:36




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 Re: 830 Case - Cracked block, sleeve - coolant problem? in reply to uppercanada, 09-16-2009 21:06:30  
I just purchased a 830 case diesel with that same problem I took the thermastat out and has'nt did it since.Was told that the stat was possibable installed backwards wish I would of payed attention when I pulled it out cause I heated it up in water and it seemed to open just fine. P.S. Does anyone know if it alright to use tractor without stat?



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ca.hess

09-17-2009 12:56:29




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 Re: 830 Case - Cracked block, sleeve - coolant problem? in reply to uppercanada, 09-16-2009 21:06:30  
If you remove water manifold as soneone else mentioned in earlier posts an start tractor for short time yoou can isolate 2 cylinders where compression leak is at. Than you only need to remove that head an anylise where leak is --cracked head-gasket or sleve might have cracked at counterbore. Coukd have cavitation hole in sleeve but not likely. Wish i had snow blower even though it would be cold job.

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Graham from New Zealand (

09-16-2009 22:35:21




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 Re: 830 Case - Cracked block, sleeve - coolant problem? in reply to uppercanada, 09-16-2009 21:06:30  
I Have 2 830s (the second bought as spares with 2 cracked heads) was told they crack heads if run without thermostat. I have never cracked one in the 46 years of the one I bought new. A fabulous tractor.



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uppercanada

09-16-2009 22:40:18




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 Re: 830 Case - Cracked block, sleeve - coolant problem? in reply to Graham from New Zealand (, 09-16-2009 22:35:21  
I'll take that advice.

I don't imagine you blow snow with your 830 there in NZ - have a look at mine here: Audio/Video clip:Untitled Audio Video

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uppercanada

09-16-2009 21:07:38




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 Re: 830 Case - Cracked block, sleeve - coolant problem? in reply to uppercanada, 09-16-2009 21:06:30  
Forgot to mention there is no oil getting into the coolant.



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#4488

09-16-2009 21:58:36




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 Re: 830 Case - Cracked block, sleeve - coolant problem? in reply to uppercanada, 09-16-2009 21:07:38  
Cracked head or bad head gasket.



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uppercanada

09-17-2009 00:13:36




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 Re: 830 Case - Cracked block, sleeve - coolant problem? in reply to #4488, 09-16-2009 21:58:36  
Right or wrong:

If the head is cracked there is compression escaping through the crack(s) (or through a bad head gasket) into into the coolant jacket therefore forcing the coolant out of the rad cap....



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