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Re: (ET) intermittent noise



We have a winner!  Although I had earlier confirmed the transaxle sheave was not rubbing against the frame today I had reason to look closer.  I removed the caliper from the disc brake and drove around a little expecting to not hear the sound.  Wrong, the scrapping noise returned.  Happily/sadly I crawled back under looking again at the sheave.  This time I noticed clear back at the rear most part of the sheave it was touching the very large saddle bracket that supports the implement tool bar.  Indeed the sheave had migrated outward and the side of it was touching the bracket.  Removed the set screw, bumped the sheave inward noticing a bit of a groove/collar on the shaft come into view, and reset the screw with LockTite.  Thanks to all for the useful input.  Mike.



From: Jerry Rhodes <jerry38 windstream net>
To: Mike Finck <mikefinck rocketmail com>; Elec-Trak <elec-trak cosmos phy tufts edu>
Sent: Monday, October 15, 2012 4:30 PM
Subject: Re: (ET) intermittent noise

Mike, check the input pulley on the tranny, had one with a loose setscrew that did that, it would move out againest the frame in REV, good luck
 
Jerry NW Ohio
----- Original Message -----
From: Mike Finck
Sent: Monday, October 15, 2012 2:10 PM
Subject: (ET) intermittent noise

I need help analyzing an intermittent noise coming from my E20 please.  It only happens when moving, then only in reverse, and only when the tractor is experiencing a load (backing up a grade, pulling something in reverse,etc), even then not always.  It is hard to locate the source as I have to be on the tractor driving instead of moving my ear around down low!  I had my wife back it up a grade as I crawled around it. It's coming from the rear (makes sense as there are no spinning parts up front other than 2 wheels).  Now, the sound is like putting an axe blade to an old foot pedal slow-spinning grindstone for sharpening.  Yeah, almost exactly like that.  Or to put it in context of the E20, as if the transaxle sheave is touching the frame and grinding away  (not happenin' though).  I thought about something metallic intermittently touching the disc brake rotor but the sound seems to be from the other side of the transaxle.  Gotta be inside the transaxle I fear.  Any similar experiences?

Mike

PS, as an update, yesterday I tried and tried to make the noise and nothing.  I have heard it up till yesterday several consecutive days. It is so ominous that I hate to even run the tractor when it's acting up; but yesterday, not a sound.


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