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5000 with oil in the coolant

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BlueTractorFarmer

01-29-2006 17:40:08




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I have a 1965 Ford 5000 with the 233 engine in it. I was using it and noticed oil in the coolant, so I pulled the head and had it checked. No cracks were found, but it did have two burned valves. I had a complete valve job done on it and the head surfaced. The old head gasket had no signs of being bad or leaking. I replaced the head onto the tractor with a new gasket and torqued the head. I flushed the cooling system several times before using the tractor. When I went to use it I started losing oil from the crank case, the tractor doesn"t smoke or use any oil. I found the oil in my cooling system again this time it seems to be worse much worse. WERE CAN IT BE COMING FROM???

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Dean

01-30-2006 14:36:57




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 Re: 5000 with oil in the coolant in reply to BlueTractorFarmer, 01-29-2006 17:40:08  
Might it be a Select-O-Speed? Late modele S-O-S tractors do indeed have a transmission oil cooler in the bottom radiator tank.

Another thought: Are you sure it is oil and not combustion by products? A leaking head gasket or cracked head can let combustion gasses into the coolant. Such contamination is easily mistaken for oil.

Dean



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RodInNS

01-30-2006 10:06:21




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 Re: 5000 with oil in the coolant in reply to BlueTractorFarmer, 01-29-2006 17:40:08  
The only thing that springs immediately to mind is the small oil gallery that feeds the rocker shaft in those engines. It's located just to the left, forward of #1 cylinder. It runs in very close proximity to the water jacket. So, it might be a leak on the head gasket due to an imperfection in the head, gasket or block deck, or an actual crack in the gallery, either in the head or the block. The oil pressure, at ~40 PSI is going to push oil into the cooling system at ~13 PSI, unless there is some afterboil that creates pressure in the cooling system after the engine is shut down. I don't know what else to suggest to on this one, and what I said wasn't promising....

Rod

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BlueTractorFarmer

01-30-2006 17:19:59




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 Re: 5000 with oil in the coolant in reply to RodInNS, 01-30-2006 10:06:21  
I dismantled the head today and found that the small oil hole in the head that feeds the valve train was leaking into the water. I'm not sure the problem yet I had the head surfaced when I put the gasket on. I may not have torqued the head down tight enough. Does anyone know the torque specs. on a 5000?



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RodInNS

01-30-2006 17:55:44




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 Re: 5000 with oil in the coolant in reply to BlueTractorFarmer, 01-30-2006 17:19:59  
I don't have the torque spec for a 5000, but based on other Ford engines of that series, I would guess that the final torque is 110 lb-ft. It is on later engines. However, I would consult the appropriate service manual, not only for the stages, and final torque, but also the pattern. You certainly want to get it right this time. HTH.

Rod



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Kenneth Armour

01-29-2006 21:31:53




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 Re: 5000 with oil in the coolant in reply to BlueTractorFarmer, 01-29-2006 17:40:08  
Does it have wet liners.

That could be your problem, either the O rings are leaking or one of the liners has corroded and letting water into the oil.

Kenneth



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Fordfarmer

01-30-2006 06:13:35




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 Re: 5000 with oil in the coolant in reply to Kenneth Armour, 01-29-2006 21:31:53  
No, 5000's don't have wet liners. Or any Fords, for that mater. Some have sleeves, but they're dry sleeves. I think the person who wondered about an oil cooler might be on the right track. Check to see if there are lines going to the lower radiator tank. This would be an intenal oil cooler. My 7000 has an engine oil cooler like this, and a trans oil cooler in front of the radiator.



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BlueTractorFarmer

01-30-2006 05:18:03




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 Re: 5000 with oil in the coolant in reply to Kenneth Armour, 01-29-2006 21:31:53  
I'm not sure if it has wet liners or not. It's not getting any water in the oil though. Can a bad liner let oil in the water without letting water in the oil? I've been told by several people that it's not supposed to, but I don't know if that is true.



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Greg_Ky

01-29-2006 17:46:35




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 Re: 5000 with oil in the coolant in reply to BlueTractorFarmer, 01-29-2006 17:40:08  
Does your 5000 have an oil cooler in the radiator? If it does I would bet that is where it is coming from.



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BlueTractorFarmer

01-29-2006 18:19:00




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 Re: 5000 with oil in the coolant in reply to Greg_Ky, 01-29-2006 17:46:35  
No it doesn"t have a oil cooler,it only has a standard radiator with upper and lower coolant tanks.



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