[AJD] John Deere A Manifolds and their differences??

[Duane Larson]

Chris,
FSB165 (Nov 15, 1949) answers this question.  These "special" manifolds are 
new manifolds designed for A>584000 and B>201000 gasoline engine tractors. 
They had a problem with carb and manifold icing in some climates, and the 
AA4543R manifold is hotter than AA3386R (but colder than the AF manifold) to 
alleviate this problem.  I've seen a few.  The FSB has a pix.
Regards,
Duane Larson

----- Original Message ----- 
From: "Chris C" <jdnutinwa at yahoo.com>
To: "John Deere Antique Tractor" <jdat at mylist.net>; "ATIS LIST" 
<antique-johndeere at lists.antique-tractor.com>
Sent: Thursday, February 23, 2006 3:00 PM
Subject: [AJD] John Deere A Manifolds and their differences??


> Howdy all,
>
>     I am wondering if anyone can explain the
> differences to me of the A3386R A (gasoline) manifold,
> and the A4039R Manifold that subs to an AA4543R
> Manifold that says it it is "Manifold,  With Studs,
> (Special) (gasonline)"
>
>     The parts manual gives no specific serial number
> breakdown for the either of these manifolds.  So I am
> curious as to what makes teh AA4543R (A4039R) Special?
>
>
>     Thanks!
>
>       Chris
>
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