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1952 Case VAC

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STeve

02-06-2000 09:01:45

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I have a 52 VAC that has sat for about 10 years. Bought a battery and, to my surprise,it started right up. After it warms up a little, about 3-5 minutes or so, it dies. I cleaned the sedimentation bowl and replaced the filter and gaskets. Also, I cleaned out the fuel tank. However, it continues to run a while when cold and after warm it dies. I suppose the carb needs rebuilding but hesitate to do it myself. Does anyone know a company that rebuilds old VAC carbs? It is an updraft model.

Also, after running for the 3-5 minutes I removed the oil filter and there was no new oil visible. This filter is located such that the oil pump should pump the oil up into the filter. I would have expected fresh oil in the filter but there was none. Is oil pressure on these old VAC's that low or is it time to inspect the oil pump?

Any advice would be appreciated.

Steve

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Jim

02-29-2000 07:53:25

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Re: 1952 Case VAC in reply to STeve, 02-06-2000 09:01:45

I can rebiuld the carb for you. It would cost you about $50.00 to do it unless something major was screwed up. Try replacing the felt washer under the points to make it run longer. VAC's only have about 10-15psi for oil presure. Try taking the tube out of the oil filter housing and screw a mason jar on the filter housing. Start it up and watch for oil in the housing. If there is, clean out the little tube, if not, pull the oil pan and try a different oil pump. E-mail me with your needs.

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MIke from Canada

02-06-2000 12:50:17

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Re: 1952 Case VAC in reply to STeve, 02-06-2000 09:01:45

I'm not quiet sure about where you can go to rebuild your carb other than the odd auto parts store that might have an account with a machine shop that rebuilds carbs, water pumps, gas tanks, etc. But make sure you get them to install new bushings as well as needle, seat and float. Normal operating oil pressure when the engine is hot should be around 10 psi. You can increase the pressure by rebuilding the bottom end ($$$$$) or adding tension to the relief valve in the filter body. Older tractor engines had oil galleries that didn't flow directly into the oil filter either they had a partial bypass to let the oil flow right through the engine when it was cold. You may also want to plug the bypass to increase filter efficiency. Just dont start it in the cold weather.

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