[AT] Farmall 350/300 More Questions

[msloane at att.net]

The TA is a planetary gear arrangement that, when engaged, reduces the speed of the output shaft by about 1/3 and increases the torque by about the same amount. It can be engaged or disengaged without using the main clutch, so if you are baling, for instance, and suddenly need to slow your ground speed and increase the power, you don't have to stop and shift down to a lower gear. You just pull back on the TA lever and run that way until the problem clears, then push it forward to go back where you were. The hardware involved is somewhat complex and requires splitting the tractor to service it, so the cost of repair tends to be high. 

Early TA's had sprag clutches that resulted in freewheeling when the tractor coasted or went down hill. If you had the TA engaged and started down a steep hill with a wagon in back, the whole mess could start to gather speed; then if you tried to disengage the TA at that point, you stook a good chance of destroying the TA. :-(

I am sure others can provide a better thechnical description of the machinery than I...

Mike
> Hey, as long as you are discussing this.  What does the TA do and how does
> it do it?  (Simple minds would like to know)
> Thanks
> Tim Nobles
> tnobles at netsync.net
> ----- Original Message -----
> From: <HaliganBar at aol.com>
> To: <at at lists.antique-tractor.com>
> Sent: Saturday, March 06, 2004 10:12 AM
> Subject: Re: [AT] Farmall 350/300
> 
> 
> > The price I've heard thrown around for TA repairs is $1500-$2000. I
> believe
> > there is only one place that repairs them. The 350 is a nice tractor, I
> spend a
> > good part of the summer raking hay and teddering with one. It seems to
> have a
> > really good combination of HP, gearing and weight distribution.
> >
> > Just my opinion,
> > Karl
> >
> > In a message dated 3/5/04 10:55:22 PM Eastern Standard Time,
> > leroy_price3 at hotmail.com writes:
> >
> > << Now the real question, TAs, don't know a thing about them but I get the
> >  impression
> >  that they are costly to fix.  Why or am I wrong?
> >
> >  I know TA is Torque Amplifier. >>
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> >
> 
> 
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