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Case Tractors Discussion Forum
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'48 VAC cooling question

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Mike

07-29-2003 13:51:19




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Does the VAC have a tendancy to spit water out of the rad. I just bought this vac with belley mower. It runs good, and according to the guage it runs at about 180 or less while mowing. I mow about 2 acres with it and have to add water each time I mow. Last night I was mowing and noticed some water below the radiator and have not had time to investigate, but the rad. didn't look wet. Any help would be greatly appricated.

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Mike

07-30-2003 11:59:28




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 Re: '48 VAC cooling question in reply to Mike, 07-29-2003 13:51:19  
Thank you. It didn't look like is was a pressurized system. Just wanted to be sure. So things are probably ok.



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Joe (Wa)

07-30-2003 20:49:44




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 Re: Re: '48 VAC cooling question in reply to Mike , 07-30-2003 11:59:28  
Mike, You have a non-pressure system. I have not seen an original Vac radiator with an overflow tube, it vents via the cap. Your engine normally will be running in the 160 - 180 deg range depending on the thermostat. The water expands as it warms up so find the stable level by not adding make-up unless the core is exposed. Of course, you will have add some make-up over the long haul because it will vaporize due lower surface tension @ working temp. Joe

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Mike from Canada

07-30-2003 00:14:26




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 Re: '48 VAC cooling question in reply to Mike, 07-29-2003 13:51:19  
its normal. dont be alarmed.

VACs run w/ an "open system" meaning the cooling system doesn't pressurize and will run out the overflow tube when the water in the rad starts to boil. the system on your car is a sealed or "closed system" where the cooling system pressurizes to increase the boilng point on engines that run at 200 degrees or better.

hope this helps

mike



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karl

07-29-2003 17:58:40




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 Re: '48 VAC cooling question in reply to Mike, 07-29-2003 13:51:19  
mine does. Runs out the overflow when I first fill it.



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