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Re: (ET) Mower motor problems

Stan,

Harold's right on.  I'd wonder about a wobble somewhere.
I've had similar harmonics problems. I find that it is sensitive to blade balance. New blades and new clutch bodies helped. Also the reinforcing rings helped some on my tall motors. Finally, the under- deck baffle assembly seemed to firm things up a bit. 
Good luck - on a quiet machine, that vibration is frustrating (not to  
mention the reliability issue!)

Steve

On Nov 2, 2009, at 5:23 AM, Clean Power Supply wrote:


 Stan,

 You don't specify which deck you have.Is it a front mount or mid  
mount? Which diameter motors? Have you tried the reinforcement  
rings for the bottoms of the motors? Are your clutch bodies true?
 Tried NEW Elec-Trak blades? Have you checked the motor shafts for  
straightness in a lathe when you had them out?

 Harold Zimmerman
 Clean Power Supply
--------------------------------------------------------------

I have been having mower motor problems. I have replaced the  
bearings,   replaced one brush housing, had the same magnet in two  
different   motors come loose, and now the magnet in one of my my  
replacement   motor housing has come loose as well.  This is in  
less than 12 months   and less than 10 mowings. I can't seem to get  
through a single mowing   without having to fix something.

I realize these tractors are pretty old, but I would expect that  
stuff   that gets fixed would stay fixed.  Is there anything I need  
to watch   out for on the mower motors? I have been through the HSM  
and all of   the on line archives.  My mower deck has a loud  
rhythmic vibration   that resonates every second or so that goes  
away when the motors are   loaded down, like when mowing thick  
grass. I have balanced the blades,   replaced the blades, balanced  
the replacements, disassembled, cleaned   and reassembled the mower  
deck and replaced the wiring on the mower   deck. I also have new  
fiber washers and I torqued the blades bolts   according to the HSM  
specs.

Any Suggestions?

Frustrated,

Stan


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