[AT] John Deere A

[Dudley Rupert]

Walt:

Water pumps were added to the late Model B's and I would guess - just a
guess - that they were added to the late A's as well.  I don't know whether
or not your' A has a pump but, if it does, I can't believe overheating would
result due to adding bigger pistons.

I have a 52 B - which does not have a water pump - and a pair of 0.125
oversize pistons, which I want to install in it.  Like you, I am hoping that
this will not cause any serious over heating problems.  Maybe we can both
take comfort in what John has said below; i.e., that boring out 0.125 should
not cause any over heating problem.

I know that taking the block out of a 52 B is as much tricky as it is hard
and I imagine the A is similar. After unbolting the B block from the rear
frame and pulling it slightly forward it had to be rotated clockwise/counter
clockwise when viewed from the front of the tractor - the cylinders, instead
of being side by side, wind up being over and under.  Next, the block had to
be rotated clockwise/counter clockwise when viewed from the side of the
tractor - the cylinders now wind up being in a fore and aft vertical
position.  Finally, the block had to be pulled forward to where the frame
rails narrow and then rotated over a frame rail with the water pipe
connecting surface being on top.

I may not have remembered the removal sequence correctly.  But the important
point here is simply follow John's suggestion and get a Model A Service
Manual ... the John Deere service manuals are excellent IMHO.

Dudley
Snohomish, Washington

-----Original Message-----
From: at-bounces at lists.antique-tractor.com
[mailto:at-bounces at lists.antique-tractor.com]On Behalf Of jfgrant
Sent: Thursday, January 06, 2005 8:31 PM
To: Antique tractor email discussion group
Subject: Re: [AT] John Deere A

Hi Walt. I'm sure that you will get many reply's on this question. First off
as a previous ( maybe still) member has often said "Get a Manual" (:>). No
you do not need to "split" the tractor to remove the block. The frame holds
the tractor together and you can remove the entire engine with out the
tractor falling apart. (:>) Just undo the connecting rods from the crank
following all good and proper practices such as marking what comes from
where. Unhook any and  all lines, unbolt the block and have some friends
lift it out for you. (:>) Boring out to .125 over should not be a problem on
overheating. I you need a copy of the procedure, let me know and I'll make
you a copy. Good Luck. John Grant
----- Original Message -----
From: <DAVIESW739 at aol.com>
To: <at at lists.antique-tractor.com>
Sent: Thursday, January 06, 2005 10:45 PM
Subject: [AT] John Deere A


>I want to know if you pull the block off of this  A without splitting the
> tractor.
> It would help a lot in my small place to  work on it. I have the head off
> but
> after looking inside I am definitely going  to have to pull the block and
> bore it out. If I go to .125 over will it cause  any heating problems. I
> think
> the extra size should help a lot in  pulling.
>
> Walt Davies
> Cooper Hollow Farm
> Monmouth, OR 97361
> 503  623-0460
>
> _______________________________________________
> AT mailing list
> http://www.antique-tractor.com/mailman/listinfo/at
>

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