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Farmall & IHC Tractors Discussion Forum
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460 governor problem revisited

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Ol Chief

08-01-2004 20:30:55




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I recently asked for help on governor and timing gear lubrication. Since then Ihave rebuilt the governor and in the process discovered ( while cleaning ) a tiny oil passage in the upper left corner of the housing.This opening aligns with a simular passage on the engine block.I have tried to fish this passage by using a piece of 22 gage trailer wire with the plastic insulating jacket intact.I was able to get around at least one 90 degree turn and in about three more inches then could go no farther.When I extracted the wire it had coating of gasket shellac on it.Obviously there is an obstuction because neither the governor or timing gears are getting oil. If anyone has a schematic of the 460 gas engine oll system I will certainly appreciate any info it may offer. I am just a short time away from from having to open up the front of this engine unless I can find any other way to solve my problem.

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lee

08-01-2004 21:30:09




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 Re: 460 governor problem revisited in reply to Ol Chief, 08-01-2004 20:30:55  
Interesting and difficult problem. You'll probably need the factory manuals and even then they may not show what you need. I'm inclined to think you will need to go in to insure a proper fix and peace of mind it is fixed properly. Am I corrrect to assume this oil supply drilling is in the front cover and crossing the gasketed interface between cover and block? I'm not familiar with 460. Have you any way to verify it is blocked such as plumbing a vacuum pump or large syringe on it to suction it or otherwise determine it blocked or clear? Just brainstorming. The 90 degree is probably a tight corner. One drilling intersecting another? I'm wondering if a length of speedometer drive cable less the outer sheath could be used to snake it and drill thru the odstruction if it is a gasket or excess shellack covering a hole. If the 90 degree bend is tight you may be done. Music wire may be flexible enough and stiff enough. But how will you know it is clear? All of this seems blue sky, risky. I would hesitate to back flush it by pumping oil in or using compressed air. Do you think it is a pressure fed drilling? If so it would seem it must be metered in some fashion
perhaps with a restrictor orifice. One concern I have if this leads to an oil gallery is the introduction of debris into a main gallery that might then find it's way to engine bearings or cam bearings or wherever it would not be tolerated. If it were supplied by a non pressurized oil drain back scheme in some fashion you might be OK to back flush it. All of this is conjecture, not knowing. Not much help here I guess.

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usmm

08-02-2004 10:15:34




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 Re: 460 governor problem revisited in reply to lee, 08-01-2004 21:30:09  
Lee;I thank you for followup to my recent post. I did try with vacuum w/out any result.I have resigned myself to go the long way around and remove the front end of the enginefor a comprehensive exam.This engine was just overhauled beforethe previous owner purchased it,He never used the tractor because he could not get the thing to run right.I found timing to be so far off tthat I was supprised that it wouldeven start.The governor had run for so long w/out oil that the balls and ball space retainer had completely disappeared. I can tell that somebody had been in there before me because there was no metal dust. In fact there wasa bungee cord streched on the governor arm to prevent the engine from running to destruction.Thanks,I will follow this up and let you know the outcome.Regards,Ol Chief

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lee

08-02-2004 10:36:33




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 Re: 460 governor problem revisited in reply to usmm, 08-02-2004 10:15:34  
Sounds like they found a problem, sealed it up and sold it. Take it apart and fix it. Pull the front cover and oil pan, flush the motor with kerosine or diesel. You'll probably find the gov parts behind the front cover or in the pan. Good luck. It will run great.



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