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Caterpillar 25 Rusty Restoration


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  #1  
Old 08-03-2012, 09:02:53 PM
Ed Bezanson Ed Bezanson is offline
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Default Caterpillar 25 Rusty Restoration

I have been working on a Cat 25 for about 4 weeks and decided to post a few pics of the job. I purchased this tractor on Long Island, NY about 16 years ago and it was complete but rough. The bottom was completely shot and most of the tin in sad shape. Finally after years of looking a Cat 20 parts tractor was located with the parts I needed to complete the 25. Although there are some differences many of the main parts like the tracks and bottom end will work. The 25 is a fairly unusual model with about 620 made in 1932. I have always liked this model series 20-25-28 because they are the last of the lod style ngas Cats. The engine harks back to the earlier 30's and 60's because the engine has individual cylinders with a one piece head holding it all together. It just has a neat old look. The pictures that will follow show the steps I am taking to get this unit mechanically solid but I will not be painting anything on the tractor. I find people love the old look and it is a lot simpler to do the job. I will be coating everything with Owatrol Marine Oil that has been mentioned on other threads over the years.

First pic is an overall view before anything has been done
Next shows how bad the tin work was that will all be replaced with rusty 1/8 metal. It has been outside for 4 years Perfect.
This pic shows a side view of the tractor showing condition of the tracks and track frames and finally the rusty condition of the gas tank surrport which is always a problem on this series.
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Old 08-03-2012, 09:39:04 PM
John C Walker John C Walker is offline
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Default Re: Caterpillar 25 Rusty Restoration

I see a few other crawler tractors peeking around corners. Come on show us what ya got hidden away.
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  #3  
Old 08-03-2012, 10:03:12 PM
Ed Bezanson Ed Bezanson is offline
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Default Re: Caterpillar 25 Rusty Restoration

John I have about 65 Crawlers in the yard which I have collected over the past 20 years. I specialize in Fordson Crawler conversions [Have 10]but also have a lot of rare units like Model 35 bates Steel Mule and a 1925 Bear made in Boston. My motto is "Anything on Tracks".
The four pics here show the terrible condition of all the tin parts. once it was all cut apart and flattened it was used to make new ones using the old as templates. All the flat metal took 21/2 days to remake. pics to follow.
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  #4  
Old 08-04-2012, 12:05:17 AM
Brasherman Brasherman is offline
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Default Re: Caterpillar 25 Rusty Restoration

We could always play I SPY. I spy with my naked eye a McD T series!
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Old 08-04-2012, 08:10:55 AM
Ed Bezanson Ed Bezanson is offline
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Default Re: Caterpillar 25 Rusty Restoration

I have a few minutes to ad a few pics of the Cat..
The first shows the typical damage to the gas tank bottoms caused by sitting in a saddle that holds water and leads to severe rusting.. I will just cut the bottom out,sandblast the inside and put in new bottom. Last 3 pics show the real rough condition of the trackframes and side frames.. The are a bolt together setup and I will make new outer rails by drilling out new 5"channel. The rusting was so severe on the cross spring that the bottom leaf had the ends completely rusted off. The donor tractor has all this stuff in fair and usable condition.
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Old 08-04-2012, 08:29:08 AM
Ed Bezanson Ed Bezanson is offline
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Default Re: Caterpillar 25 Rusty Restoration

The next 4 Pics are of the donor tractor as found in the woods in northern CT.
Front view showing tree that fell on the hood last fall during a hurricane. The tracks are in good condition but have a hole cut out of each pad[crude] so it can be used in snow. I will clean the holes up as good as I can.
The engine was taken apart years ago and much is missing but not a problem because mine is fine and complete.. Next view shows the rough condition of the driver area with air cleaner sitting in seat. lastly a rear view. This tractor has an added bonus because it has a Capistan winch mounted on the back. Not a factory install but a pretty fair job. I will probably clean up and use on mine. More pics of it when I get it out in the open.
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  #7  
Old 08-04-2012, 12:14:39 PM
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Phil Johnson Phil Johnson is offline
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Default Re: Caterpillar 25 Rusty Restoration

That's quite a project, Ed. I'm glad old iron doesn't rust near as bad out here in western Canada!!
Looking forward to progress pics on this one.
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Old 08-04-2012, 04:52:58 PM
Ed Bezanson Ed Bezanson is offline
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Default Re: Caterpillar 25 Rusty Restoration

I am in the house for a few minutes to cool off and watch the games.
These 4 pics show the reconstruction of the tin work. I was lucky to find a 4X10 piece of 10 guage at a local metal shop. It was to be used on a fabrication for a nuclear sub but somehow it got rusty and the Navy refused it. I got it for less than half price and it is perfect for this job.
First pic shows a 4X5 piece laid out with the original piece being used as a template to cut out the new. I ground the edges of the original so that the Plasma cutter would run smooth when using it for the curves. All straight lines are cut using a long brass straight edge. By carefully moving the old piece back and forth the to compensate for the 1/8 offset of the cutting tip a pretty much exact duplicate can be cut out. The larger holes are cut out using the inside of large wachers as a guide. Once the new piece is done the old one is clamped to it and all holes are drilled out to proper size.Next pic shows new left fender side in place with the old out in front. Next shows the seat being setup and fitted and the last shows the new assemble bolted together.
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  #9  
Old 08-04-2012, 10:23:27 PM
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Default Re: Caterpillar 25 Rusty Restoration

Thats about how rough of shape the ones I find usually are. I've passed on a few otherwise good units because of the poor condition of the under carriage. The rear sprockets look to be shot, how do you cure them when no replacements are avilable?F.J.W.
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Old 08-04-2012, 11:48:29 PM
Brasherman Brasherman is offline
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Default Re: Caterpillar 25 Rusty Restoration

What are you talking about? Just flip the sprockets side to side, they will work great!

I think that looks to be a pretty good start actually!
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Old 08-04-2012, 11:53:19 PM
JKWidener JKWidener is offline
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Default Re: Caterpillar 25 Rusty Restoration

You have any Kitty Krawler miniature dozers from Lincoln Nebraska?
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Old 08-05-2012, 05:23:24 AM
Geoffrey Mark Geoffrey Mark is offline
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Default Re: Caterpillar 25 Rusty Restoration

really impressed with your progress so far , could do with some off your motivation
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Old 08-05-2012, 05:35:52 PM
Ed Bezanson Ed Bezanson is offline
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Default Re: Caterpillar 25 Rusty Restoration

I have always had a hard time finishing a project in what my son calls a timely manner. The Golf Course Fordson took me 11 years to finish and that is why I have moved on to this Cat. He hopes that by putting the progress on the Stak I will be more likely to keep at it. I guess only timme will tell is these postings help me overcome my problem. Below are 4 more pics
The first shows the fender top temporarilly in place. I did not make a new top because with a little work both will look great. The case is simular with the lower engine side covers in the 2nd pic. The upright metals was fine but the parts attached to the side of the engine were rusted away. The new ones are shown. Next I did the radiaror over. After 12 years it was still full of antifreeze .I dismantled it, cleaned the tubes and then put it back together which is shown in the last pic.. There is a lot of paint left on it and once coated with Marine oil it will have a great patatina.
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Old 08-06-2012, 09:04:28 PM
Ed Bezanson Ed Bezanson is offline
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Default Re: Caterpillar 25 Rusty Restoration

Starting to dismantle the engine. Will do a valve job and new rings and only check the clearances on the rods that look very good. First pic shows the engine with the cylinders removed. next shows the parts lined up in order ready to be cleaned. I like the lifters on this engine because they have individual holders that can be removed seperately if necessary. Lastly the pistons removed sitting next to the oil pump that mounts inside the right rear engine side cover. Cleaning all the parts and especially the inside of the engine that was full of the usual black goo was daunting.
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Old 08-06-2012, 09:24:55 PM
Ed Bezanson Ed Bezanson is offline
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Default Re: Caterpillar 25 Rusty Restoration

When I looked at the donor tractor I found the outer track frame rails were in poor shape. This was a logging tractor and ripping around the woods took its tole on them. I went to my local steel dealer and purchase 15 Ft of 5" heavy channel iron. A note here that 5" heavy is not quite as heavy as the original rails but will be fine for my purpose.
These 4 pics show the process I used to make the new matching rails using the originals as templates to drill out the 50 odd holes and get them in the exact positions. First pic shows the 2 old and 2 new rails side by side. Next Right rail bolted back to back with new left rail and drilled and then the same for the other side. Once main face is drilled the old rails are cut [torched] in half and the pieces also reversed to drill top and bottom holes. I'm not sure how I figured out this process of reverses but it does end up giving you 2 new accurately drilled side rails.
For the Caterpillar guys out there I have a question. When I split the engine from the trans I found the pilot bearing [Roller] was a bit rusty but also dry. Should I pack it with white grease when I reinstall it or leave it dry. Once assembled it cannot be greased from outside. Book I have mentions it will appear to be loose [designed that way] but doesn't mention anything about lubrication???????
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Old 08-07-2012, 10:09:28 AM
Pete LaBelle Pete LaBelle is offline
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Default Re: Caterpillar 25 Rusty Restoration

Ed -

There are different weights of channel iron out there. Measure the thicknesses of your current old iron and check back with your steel supplier. Just because it wasn't on his shelf doesn't mean it is not available anymore.

Pete
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Old 08-07-2012, 10:56:16 AM
chriscokid chriscokid is offline
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Default Re: Caterpillar 25 Rusty Restoration

looking good
here is a pic of my 25
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Old 08-07-2012, 08:03:40 PM
Ed Bezanson Ed Bezanson is offline
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Default Re: Caterpillar 25 Rusty Restoration

I didn't realize it was lighted till I had already drilled a bunch of holes. It will be fine since this tractor will never do any hard work. I will in the future look more closely before I buy iron. Ed B
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Old 08-08-2012, 10:51:04 PM
Ed Bezanson Ed Bezanson is offline
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Default Re: Caterpillar 25 Rusty Restoration

Now that the tractor is stripped down to the basics its time to work on the engine. The hardest part is the cleaning of the crankcase of all the black goo. I have a small high pressure cleaning gun I use in my T-Shirt business and filled with kerosens it works great blasting out the tight areas. No matter this a thankless very dirty job. I decided to remove the front gear case because I found some metal pieces in the front of the oil pan. All looked good so I just cleaned it up and put it back together with a new gasket. This 3rd shot shows the engine split from the tractor with the trans all by itself. I then moved the engine undercover and moved the trans on to my concrete pad for easier dissasembly. It was at this point I learned the trans was great inside so it will be left as is. The outer gear cases and clutch packs are a different story and will need extensive rebuilding or even replacement because of their poor condition. Ed B
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Old 08-09-2012, 08:13:58 PM
Ed Christian Ed Christian is offline
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Default Re: Caterpillar 25 Rusty Restoration

Hi Ed, I know this will turn out nice. Good Luck with it. I see a 37 All Around in the background. It ought to be at my place. Take care, Ed
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