I haven't quite finished up my current
http://www.heavyequipmentforums.com/showthread.php?40068-Cat-955L-saved-from-being-paperclips-Looking-for-help-on-tensioners-and-injectors&highlight=" rel="nofollow - 955L
project, but I'm starting to scope out my next adventure in store. This
thread was originally started in HEF, but I was asked to bring it over here to share, thanks to Andrew_D and DMiller!
The Beginnings of the Story:
My dad had an old AC HD5B that he bought to piddle around the farm. He
ended up finding the old 2-71's end of life after the first project he
put it on. Needless to say, he was a little aggravated at the situation
in whole, but he commenced to get a running engine pieced together. By
the time the new engine was set in the frame, life got in the way and
the AC set in the yard for half a dozen years.
I ended up getting ambitious in eighth grade or freshman year and took
it upon myself to get it going. I got all the controls hooked up to the
engine, changed all the filters, installed the radiator and hoses, and
whatever else needed finished. I did seek advice from a few old
mechanics as I was going along with it, especially on how to get it all
primed up. I was quite proud of myself when I got the old gal fired
off!!
I drove it a round a bit and got the clutches freed up, but I could not
get it into reverse. I pulled the shifter out, and the rail for reverse
was froze up, most likely from water intrusion. I ended up running it
into the shop and pulled out the transmission (at the same age, mind
you!) with a cable come-along tied to the top of the homemade canopy.
With a bit of elbow grease and some penetrating oil, i got the rails
sliding much better. I had a smile from ear to ear when I got the blade
up to my first pile of rock to push!

I did not know it then, but that just planted an itch for playing in dirt with more than just sandbox toys...
After it was running and out of the yard, it did not get used very
often, as we sold the dairy cows and rented out the farm ground shortly
after. At least it was parked inside now.
Fast Forward a Few Years:
The old AC still slept in its spot inside the old cattle barn, yearning
to be worked but never given the opportunity. Life continued onward, and
I ended up dating a girl (now, my wife) that had a father that enjoys
working in the woods and sawing lumber on his mill. After a few years of
dating her, a tornado hit her parents' home and tore the heck out of
the woods surrounding the homestead. Their house was repairable, but his
6-month old barn disappeared, and crushed almost everything inside.
As he was contemplating the cleanup, he asked of the old crawler parked
away on the farm and was quite interested in buying it off my father. I
was a little torn, but it would definitely be better for everyone, as
well as the machine, itself.
I dropped a battery in the Allis, gave it a little snort, and off we went!
My Father-in-Law used it quite a bit in the woods, dragging out mangled
messes of trees and debris, trying to salvage what he could. It was a
good feeling, seeing the AC get some use again. It got a new canopy,
radiator guard, and some love that it needed.
After a few years of use, the tracks were simply past the point of
destruction. Every link showed more of the pins than of the bushings.
Even though the tracks never came off, they were jumping teeth. With the
fear of doing more damage to the machine, it was put back in the shed
to hibernate for a few years until we could find a way to revive her.
The Past Year
After searching high and low for pins/bushings/rails/tracks/rebuilders
and any other option we could find, I came across a set of tracks down
in the bottom of Kentucky. The price was fair, but they were triple-bar
grousers off of a loader. Not the best for going through the woods, but
that would definitely be a better option than nothing.
Now, we just needed to make a trip down there to see if they were in
better condition than what he already had. I was honestly dreading the
changeout, since the adjuster was a giant ball of rust that was not
going to be persuaded easily. Oh well...
Being not completely satisfied with this option, I continued my hunt.
And, boy oh boy, did that get me in trouble!! Short version - That is
how I ended up bringing my 955L home!
I continued looking for more ways to spend money on the internet when I found the answer - another complete machine!
Present Day
I found the "donor" in January, and we went to go look at it on a Sunday
afternoon. It was about 1.5 hours away, so it was quite a bit shorter
of a distance than to where the tracks were located. It was definitely
the better option. The shoes were 3" wider, great single-bar grousers,
and a few years newer. It even had the 2-speed reverse that was MUCH
tighter than the transmission in the other machine. After looking at the
machine a little closer, it was honestly in better condition than the
one we were wanting to repair. It originally had a winch and a blade
mounted on it, but the owner was planning on converting it back to a
tractor for pulling a plow at shows. They had sold off the blade and the
winch, removed the hydraulics, and eventually lost interest in
finishing it up.
We were ready to go pick it up as soon as we could, but the weather has
been not cooperating in the slightest bit this year. Finally, yesterday,
we were able to make the trip to bring it home. It is still parked on
the trailer, but we are starting to study each one and make note of
which parts are in a better condition than the other. The pins are a bit
loose in the bushings in the "new" machine, but the tracks are not
sagging, and the pins are not showing through. It will work just fine
for playing in the timber.
The goal is to swap over the hydraulics, blade, canopy, radiator, and a
few other items. I am not sure on the engine, as the first one
definitely has fewer hours. That can happen down the road, if needed.
The Original:

The "Donor":
