[AT] Plow question

David Steinich dsteinich at gmail.com
Thu Jun 16 13:25:04 PDT 2016


A 190xt has a preload set screw on the "rock shaft", similar to preloading
the spring on the wd and d series tractors. The sensitivity is set with the
console lever (similar to the notched lever by the steering wheel on a d
series). It also has a depth lever. Unfortunately the torsion bar is hex
shaped and the casting it fits in can wear, rendering the traction booster
system inoperable. We kept a hand on the depth lever to manually control
the system...

On Thu, Jun 16, 2016, 3:06 PM charlie hill <charliehill at embarqmail.com>
wrote:

> I agree Len,  All of the tractors I've ever run including some Massey's
> have
> lower link control.
> The Massey Fergusons work strictly on depth as far a I know.  If the plow
> pulls down below where
> you set it the lift picks it back up.  The A-C stuff senses tension on the
> drawbar so it will regulate
> with either too much depth or two much drag.  I've only run a few Massey's
> so there might be some
> out there that use a top link sensor.  I'm just not aware of any.  I'm
> pretty sure the 190 XT uses a rock
> shaft connected to a lever that runs up into the bottom of the rear end
> housing that actuates the hydraulic
> pump.  The rock shaft pre-load is adjustable (the amount it can rock before
> it actuates the pump) via a
> notched quadrant lever somewhere, maybe near the steering wheel.  That's
> how
> it is on the D series tractors.
>
>
> Charlie
>
> -----Original Message-----
> From: Len Rugen
> Sent: Thursday, June 16, 2016 2:28 PM
> To: Antique tractor email discussion group
> Subject: Re: [AT] Plow question
>
> Long ago, I spent just a few hours around an ac 190-XT.  I thought it was a
> later one that had 3-pt, not a converted snap coupler, and I seem to
> remember it having draft control with a semi-mount plow.  I also remember a
> MF tractor, either 1135, similar or the next generation after that, had
> lower-link draft control.
> I only have smaller tractors with top-link draft control, so the #88 plow,
> with a 3-pt hitch but the pivot for semi-mount seems intriguing.
>
> Len Rugen
>
> rugenl at yahoo.com
>
>
>
>
>     On Thursday, June 16, 2016 12:59 PM, charlie hill
> <charliehill at embarqmail.com> wrote:
>
>
> Alan,  Allis Chalmers tractor use a big spring on the snap coupler
> down under the tractor or a rock shaft on the lower arms of their
> three point hitch tractors.
>
> Charlie
>
> -----Original Message-----
> From: Alan Nadeau
> Sent: Thursday, June 16, 2016 12:27 PM
> To: Antique tractor email discussion group
> Subject: Re: [AT] Plow question
>
> As far as I know all the load & depth, or draft, regulating systems get all
> their input from the top link connection.  I think that with a semi-mounted
> plow there is no way for anything to be "seen" by the tractor sensing magic
> since there is no top link used.
>
> I'm not sure you would be all that busy.  From what I remember seeing when
> others were plowing with semi-mounteds, is that lift & lower is done in
> stages.  To get the plow in the ground, drop the front by just stuffing the
> 3-pt control down to a preset stop then drop the rear, pretty much as soon
> as you can get your hand on the second lever.  To raise, life the front
> first, then the rear.  Probably not as much of an issue with only four
> bottoms but on the really big plows it looks like that would tend to
> shorten
> the headlands a bit as well.
>
>
> ----- Original Message -----
> From: "Len Rugen" <rugenl at yahoo.com>
> To: "Antique Tractor Email Discussion Group" <at at lists.antique-tractor.com
> >
> Sent: Thursday, June 16, 2016 11:44 AM
> Subject: [AT] Plow question
>
>
> >I saw this add for a MF #88 4/16 plow. Would that need a top or bottom
> >draft sensing tractor? It is a 3-pt plow, but it looks like it's semi
> >mounted, it takes a cylinder, so you would have to operate both levers to
> >raise/lower? I'd be as busy as driving an old hand-clutch Cat D2 :-)
> >
> > Massey Ferguson #88 4/16 Plow
> >
> > |
> > |
> > |
> > |  |    |
> >
> >  |
> >
> >  |
> > |
> > |    |
> > Massey Ferguson #88 4/16 Plow
> > This is a Massey Ferguson Model #88 plow that is a 4/16 in good condition
> > with fair paint and tire.This plow has...  |  |
> >
> >  |
> >
> >  |
> >
> >
> >
> >
> > Len Rugen
> >
> > rugenl at yahoo.com
> >
> >
> > _______________________________________________
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> >
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