[AT] 430V update

[Indiana Robinson]

Give it a shotgun, point towards the woods and let it hunt...  ;-)


.


On Nov 18, 2017 11:30 AM, "Spencer Yost" <yostsw at atis.net> wrote:

> Thanks guys,
>
> One of the blessings (or so I thought) was the carburetor was very clearly
> recently rebuilt. The throttle shaft is just as snug as one could hope for.
> I definitely don't have a vacuum leak through the throttle shaft. The
> linkage all seems correct and tight as well.   What made me wonder about
> the right carburetor, was the idle speed adjustment screw barely touches.
> You have to screw it almost all the way in to get it to even start
> adjusting. That's why I even looked it up to begin with and that's the only
> part that never seemed other than perfect.
>
> The carburetor number is based on memory. I haven't looked at the tag
> since I had the carburetor off while trying to unstick the engine. So I'm
> going to have to look at it again to confirm it's at 541. But I'm nearly
> certain it is.
>
> PS: the manifold bolts are already loose. I didn't bother ordering the
> manifold gasket until I was certain I could get the bolts off.  Like you
> Dean, my experience is spotty with positive outcomes in this regard.
>
> Spencer Yost
>
>
>
> Spencer Yost
> > On Nov 18, 2017, at 10:11 AM, Dean VP <deanvp at att.net> wrote:
> >
> > Spencer,
> > One of the more important things I have learned way to late in messing
> with these old tractors is to not try to remove manifolds unless I
> absolutely have to. I don't like drilling out broken off manifold bolts and
> that is almost guaranteed on 50 plus year old tractors. I agree with Steve
> that your idling issues are more than likely worn carburetor shaft issues
> OR incorrectly adjusted linkage. Since you needed to mess with the throttle
> you might start with that adjustment. I've had more idling problems caused
> by linkage issues that I want to talk about because I never check that
> first.  Spray a little WD40, using the straw, at the shaft entrances to the
> carburetor body. Changing a carburetor shaft is no big deal. I don't
> remember if the 430 has bushings for the shaft or not. I doubt it.  The
> shaft is just probably made of a softer material.  The carburetor for the
> 430V should be a TSX 688. JD had a series of carburetors for the 420 from
> TSX 641 to 678 to 688 to 689 but the !
>  430 Gas S/B TSX 688. The AF 430 would be a 678 or 689
> >
> >     From: Spencer Yost <yostsw at atis.net>
> > To: at at lists.antique-tractor.com
> > Sent: Friday, November 17, 2017 9:47 PM
> > Subject: [AT] 430V update
> >
> > I tried several things to find the vacuum leak, and the problem is
> either not a vacuum leak, or is just so insidious that propane and WD-40
> just simply isn't going to find it. Considering manifold gaskets are super
> easy to replace and cheap, I just ordered a replacement gasket(carb and
> manifold) from John Deere(price was competitive).  At least I can rule out
> the gaskets after I deck/file the manifold and replace the gaskets.
> >
> > I am beginning to suspect the Carb. I didn't have a hunt at idle for the
> first little bit that I ran the engine. But the throttle also wasn't
> working so I never got a true idle so I assumed the hunt was real and the
> lack of throttle control hid it.  Plus I am not getting the response from
> adjustments that I would expect.
> >
> > Also, I am pretty sure the carburetor is a MS TSX 541. The parts catalog
> indicates  I should have a 641. I need to pull the carb  when I do the
> manifold and double check the number. (Of course the tag is facing the
> engine so I can't see it).  Does anyone know if the 641s were a definite
> for this tractor? The 541s were common on Ford's, so I'm afraid the carb is
> been replaced sometime in the past. If that's the case that might explain
> my hunt.
> >
> > I got the serial number research from the two cylinder club today.
> Here's a picture of the document they sent me. The tractor survives as it
> was shipped a except the "dry charge" battery of course (-:  Everything
> mentioned is still the same and the tail light even still works(did have to
> clean up the ground).
> >
> > An interesting sidenote: the finish date is my wife's birthday(it is a
> few years older). I thought that would earn a few points for the tractor,
> but I don't think it did :-)
> >
> >
> >
> >
> > Spencer Yost_______________________________________________
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> >
> >
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