[AT] JD 430 update

[Dick Day]

I cannot remember where I found this...

If you have to remove the block w/ stuck pistons, turn it upside down,  fill
the pistons up to the tops of the skirts with liquid Nitrogen, Liquid
propane works too. Let it sit  awhile then try to push the pistons out with
a hardwood block or a heavy metal spacer that just fits into the bore, and
a hydraulic jack. Nitrogen will lower the temperature of the piston
dramatically and cause it to shrink, breaking the bond with the cyl. wall.  A
hunk of dry ice laid on top of the piston should do the same thing. If
you  have
a big press that would be great.


On Wed, Jun 7, 2017 at 10:32 PM, Spencer Yost <yostsw at atis.net> wrote:

> Since I brought the 430 home, I have been soaking the engine with a
> mixture of penetrant and ATF. The engine is definitely stuck tighter than a
> drum. One cylinder appears to very slowly sleep some fluid. The level
> decreases but not fast(days) and barely enough to raise fluid level in the
> oil pan.  The other cylinder has not had a single drop decrease in the
> level of the fluid.
>
> One question for the group: there is no good way to try to rock the
> engine.  All my normal tricks like ring gear, crankshaft pulley nut, etc.
> are not accessible or not situated in such a way that it would be safe for
> the tractor or effective.  Would you try the PTO shaft?  I have not needed
> to use the PTO shaft before but it seems like the gearing just is not right
> to generate a lot of torque.   Plus I would need a coupler or adapter or
> something to protect the shaft from the pipe wrench.
>
> On a positive note; I have done further inspection of the tractor , and I
> am liking this tractor more and more. It is very clearly a very low hour
> tractor. There is no slop or play in the power take off,  transmission,
> rear drivetrains or anything. With the tractor in gear and the engine stuck
> it barely moves an inch. The only thing that shows any kind of real wear is
> the universal joint at the steering wheel. But even that wear is at an
> acceptable level.
>
> Spencer Yost
>
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