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John Deere Tractors Discussion Forum
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Help Please

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B JDfarmer

08-10-2004 20:44:22




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I have a 48 B. It is making a vibration noise from it sounds like the engine. I have replaced the transmision bearings and the governor bearings. when u go to push the clutch forward a little knock from towards the front of the tractor. When u have it in gear under a little load it doesn't knock or vibrate anymore. Could anyone please help me or give me any idea at what to look at. thanx




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Clooney

08-11-2004 04:17:41




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 Re: Help Please in reply to B JDfarmer, 08-10-2004 20:44:22  
B JDfarmer, you say..

Quote: "I have a 48 B. It is making a vibration noise from it sounds like the engine".....

Answ, we need to know the speed of the vibration noise [engine or wheel speed or somewhere in between]. It would also help to know the appx place the noise is heard the loudest from. It would also help to know what the noise sounds like..

Those old 2-cylinder Deere"s make all kinds of vibration noises some are normal & others are not..

The only way we have of knowing what you have there is in how you explain it to us..


Your noise/vibration & knock could be anywhere from loose engine or frame bolts, to worn pistons that are loose in the bore, to bad fan shaft bearings or loose fan gears, to worn flywheel or clutch parts or attachments, to mismatched engine parts, to ????..

The more you can tell us about when, what it sounds like, what frequency vs engine RPM, exactly where it is coming from [use a long hose with one end to your ear to pinpoint the area] �the closer we can get you to your noise..

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Pappy

08-10-2004 23:11:48




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 Re: Help Please in reply to B JDfarmer, 08-10-2004 20:44:22  
How much clearance in your flywheel spacing. If your flywheel has too much lateral movement, this could cause some clunking as you push the clutch.
Otherwise, you might have a bad bearing in the clutch pulley. Might just need some grease in the bearing. Also, be sure your clutch driver disk is tight on the crankshaft.



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