[AT] Ford 3000 SOS input TLC and shaft

[charlie hill]

Don,  why not turn down the input shaft and thread it for a grade 8 nut that 
fits a 7/8 socket.  Screw one or maybe two onto the shaft, bevel the joint 
between the nut and the shaft shoulder
out and weld the nut(s) in place.  That should be a lot faster, easier and 
more accurate than setting the shaft up in a mill and having to make 6 
different set ups to machine it.

Charlie

-----Original Message----- 
From: Don Bowen
Sent: Wednesday, August 01, 2012 8:55 PM
To: Antique tractor email discussion group
Subject: Re: [AT] Ford 3000 SOS input TLC and shaft

On 8/1/2012 6:43 PM, k7jdj at aol.com wrote:
> Good pictures.  Since this seems to be a known failure point is there an 
> improved replacement?  I have had similar issues on John Deere shafts on 
> hydraulic pumps and the transmission input shaft on my JD 350 crawler. 
> The JD 350 problem is a $1200 plus part!  The failure on your part is 
> different than what I see on the JD stuff.

There is no improved version, just ways to make non obtainable parts
work for a while longer.  A fix is to machine 7/8 hex flats on the input
shaft and weld a 7/8 impact socket in the center of the clutch.  What I
do not understand is that clutches are old technology and by the mid
fifties they had figured out how to keep splines in place.  This is not
a clutch you disengage then if you are a kid trying to smart off,
dumping the clutch.

The hex fix can be done on my parts for $300, new clutch is $179 and
input shaft is $359.  That is if it has a single seed PTO.  The tractor
production code on the transmission shows it as a single speed but there
is a two speed lever on the side.  It could be that someone changed it
or the lever just plugs a hole.  I ran it in a brush hog so there was
never a reason to use the higher speed and I cannot remember if I ever
tested to see if the lever did anything. In any case if it is a two
speed the only choice is the machining and the only way to know is to
take it apart.

-- 
Don Bowen           KI6DIU
http://www.braingarage.com/Dons/Travels/journal/Journal.html

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