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Re: IH 300 UTILITY ENGINE NOISE-NEED HELP
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Posted by john d on September 05, 2000 at 06:55:51 from (206.141.74.34):
In Reply to: IH 300 UTILITY ENGINE NOISE-NEED HELP posted by SAM DIMARCO on September 04, 2000 at 21:51:34:
The hydraulic pump is driven by the same gear train that runs your camshaft and distributor. If it is under load, any play in the system will be tightened up temporarily. Since using the hydraulics dampens the noise, that gear train is suspect. What is the oil pressure on this tractor? Low oil pressure on these engines can sometimes be traced to worn camshaft bearings. Higher rpms would typically produce more pressure, and you indicate the noise lessens as rpms increase. Try to find a way to turn the engine slowly and listen for the noise. I think that tractor has a place for a crank to be used, but the mechanism is likely frozen in place unless it's been used lately. You might try jacking up one rear wheel, putting it in 5th gear, and rotating the engine by turning the wheel forward. That would let you listen in relative quiet for what is banging in there. (It will be even easier to turn if you pull the sparkplugs) Getting to those gears in the front end won't be fun, if that's where the trouble turns out to be.
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