[AT] Plow question

charlie hill charliehill at embarqmail.com
Thu Jun 16 12:57:16 PDT 2016


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
>
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> 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...  |  |
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> Len Rugen
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> rugenl at yahoo.com
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> _______________________________________________
> AT mailing list
> http://www.antique-tractor.com/mailman/listinfo/at
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