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Farmall & IHC Tractors Discussion Forum
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300 Utility Camshaft Advice Needed !

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MMB

04-18-2006 06:34:59




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I've had some phone conversations with the owner of a 300 Utility that is for sale. There is a major mess somewhere inside the engine. He claims that a few years ago he had an engine job done after the tractor had "camshaft" problems, exactly what the problem was he doesn't know but it was apparently rebuilt by somebody else. Then this year, he was driving it and it suddenly quit. On closer examination, he says it spins over with the starter but the valves aren't moving (after taking off the valve cover). Sounds like another camshaft problem, probably a sheared off cam gear? Not knowing much about IH engines, anybody out there venture a guess as to what happened or what is causing this? Is this a common problem on those engines? Is this the same engine as in a Farmall H? Thanks for the help.

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Bob M

04-18-2006 07:10:21




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 Re: 300 Utility Camshaft Advice Needed ! in reply to MMB, 04-18-2006 06:34:59  
Most likely the hub has been busted out of the cam gear. It's not an unusual failure on these engines equipped with a live hydraulic pump.

Another possibility is the nut holding the gear onto the camshaft was improperly secured in the previous repair. It then worked loose causing the key in the cam gear hub to shear.

Whatever the problem the front end will have to come off the engine to fix it. Figure $150 or so for new cam gear if needed.

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Tip: If you decide do get this tractor and make repairs, check the live pump relief valve setting before you use the hydraulics. If the valve set to high (or if it has been removed) it will overstress and quickly bust the cam gear.

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