[Farmall] 340U brakes fixed - now questions about PTO

[br549 at hemc.net]

Thanks for the great info. I have the original microfiche and the I&T 
repair manual so I'll take a good close look at them and see what I 
can make of the adjustments and type of PTO that I have. I can send 
pictures if someone out there can identify them by looks. I don't have 
any type of notch for the up position but my linkage seems a little 
bowed and maybe that keeps the over center from working correctly. 
If the clutches are worn, I don't know if I'd be comfortable working on 
that... if it isn't much harder than the brakes - bring it on!


On 27 Apr 2005 at 6:00, farmall-request at lists.antique-tractor.com wrote:

> Message: 10
> Date: Tue, 26 Apr 2005 23:58:31 -0400
> From: Greg Hass <gkhass at avci.net>
> Subject: Re: [Farmall] 340U brakes fixed - now questions about PTO To:
> Farmall/IHC mailing list <farmall at lists.antique-tractor.com>
> Message-ID: <5.2.0.9.1.20050426234816.00b2ba18 at avsin.avci.net>
> Content-Type: text/plain; charset="us-ascii"; format=flowed
> 
> The one thing I do know about the 340U PTO is that it does not engage
> simply by releasing the lever.  It is one of two things - either it
> has a second notch in the "up" position for the latch to engage, or
> (more likely) it is of the "over center" type.  My guess is that it is
> either worn a little or the linkage is bent so that it does not go
> over center.  In the last case you may have to change the linkage so
> that it requires (and I'm just guessing here) approximately 10 lbs of
> pull to go over center and thus engage the PTO.  My brother had one
> for may years and I asked him tonight how it operated and he could not
> remember for sure if it latched in the "up" position or went over
> center.  Our best guess is the latter.  Someone on the list alluded to
> the fact that there may be 2 types of PTO.  However, all the 340s I
> have seen have the independent PTO which is driven by a clutch pack
> inside.  While fairly reliable, these can be severely damaged by
> excessive slippage.  My advice would be to see if someone on the list
> has a manual and could e-mail you the proper pages for PTO adjustment,
> or perhaps talk to a dealer.  Or possibly look at another 340 that is
> working properly.
> 
> Greg Hass
> Bad Axe, Michigan
> Home of the 12" April 25 blizzard!