Scouting Trip

I went on a little Sunday afternoon Scouting Trip to look at two OC-3's. You know what they say, "There's always room in the shed for one (or two) more OC-3's."

I had a brief eletronic conversation with a guy on the ytmag.com forum in November. His uncle died and he was trying to deal with his estate. He wanted to know what OC-3's were worth. He had two machines. I of course told him they range from scrap metal to $4000 depending on condition. I asked the location of the machines. They happen to be in Northern Wisconsin. I said if one was a parts candidate to let me know.

Three months went by and out of no where he emailed me some pictures and a more detailed description of the machines. So, took a drive north to check them out.

The green one is a 1952 OC-3 (42 inch width & 8 inch wide track pads). It has a Ware HGH loader with a 41" wide bucket. It also has a pto with belt pulley. It was described as the better of the two machines. Apparently both machines were running about two years ago before "uncle Tom" got sick. The green OC-3 had "transmission problems" around this time and it was removed and taken to the shop. The parts were "lost" during this long period of time so it was missing a "transmission". I discovered the missing transmission is really a missing clutch unit, bellhousing and gas tank. The tin work is a mess but the undercarriage looks fairly good.

The yellow one is a 1955 OC-3 (42 inch width & 10 inch wide track pads). According to the serial number it was originally a 68 inch wide machine and it was converted to 42 inches somewhere along the way. It has a 77 inch dozer blade that appears to be homemade. It also has a rather odd contraption on the back that I have come to learn is a cable jammer. It was used for skidding logs. The yellow OC-3 has a pto as well. The pto operates the winch on the cable jammer. The sprockets look good. The grousers (the paddles that stick up on the track pad for traction) have been rebuilt via weld. This machine was described as seeing a lot more use and in worse shape. Apparently it had a habit of throwing its tracks. I think I know why. It appears one of the track frames is bent - but I can't be sure because it is sitting in 18" of snow. Lastly, the tin work on this machine is a disaster as well.

If you could combine the two units, you might end up with a functioning crawler. It was a nice day for a drive and it is always fun to look at "The Finest in Farm Machinery". I'll send the guy an email telling him they are less than desireable machines. However, for the right price, I'd find a way to drag them home! We'll see what happens. . .

Another Ebay Parts Purchase

Not much new has happened on the OC-3. Since my last post it has continued to be a tough winter. Cold and snow has really put a damper on my motivation.

However, I did start a search for what I originally called in my May 27, 2007 post (http://oc-3restoration.blogspot.com/2007/05/left-sprocket-surprise.html) "some sort of tapered compression retainer" - which is actually a pretty good description. In the OC-3 parts manual they are actually called "Part Nbr. 115 975 Collet - for rear wheel stud".

The collets were the items that caused me so much grief when I was trying to remove the left-side drive sprocket. The right side didn't have them and therefore the sprocket came off easy on that side. That's a problem - the sprocket shouldn't come off easy. The collets serve a purpose.

So, in January I began the search for 10 collets (at that time I didn't even know their name). After some thinking, I concluded the best place to visit was my local Fastenal store. The guy behind the counter looked at the part with a blank stare. He asked what it came off of and I told him. He looked at again, and suggested I contact the original manufacturer. Gee thanks - I'll give the empty slab that used be the Oliver plant in Charles City, IA a call. "Fastenal: the premiere fastener distributor in North America."

As I considered my next move, a listing appeared on Ebay for 10 "Cone Bushings" from an OC-3. This Ebay seller was the same one that sold me the oil filter base. I watched the Ebay auction and became the successful bidder. I ended up paying just over $2 per collet with shipping and handling. I'm guessing $2 per collet is cheaper than a month or two of searching for a modern day vendor.

So, I made a little bit of progress, but each step is needed to realize the full restoration of the OC-3.

As for my motivation - two things have helped in that area.

First, We've had a couple of days above freezing which leads me to believe spring will indeed arrive in the next month or two. The second piece of motivation were some pictures posted on http://www.cletrac.org/ by Steve from Washington. Steve posted some pictures detailing the progress of his OC-46 restoration. The OC-4 (OC-46 is the track loader version) is the younger and slightly bigger brother to the OC-3.

Anyway, Steve's pictures show what perseverance and attention to detail can produce.

http://www.picturetrail.com/gallery/view?p=999&gid=15042131&uid=533924&members=1

Nice job Steve and thanks for the inspiration.

Mid-Winter Mulling

Nothing new has happened on the OC-3 since November and that is unfortunate. Winter came on hard and fast with lots of snow and rather chilly temperatures. Add the holiday season to that and there just hasn't been time to work on the parts and pieces.

In December, I was able to make a part purchase on Ebay. I picked up an oil filter base assembly for $20. Back in April I discovered the original filter base was missing the feeder tube that sticks up into the filter. I had planned on drilling out the remains of the old tube and braising in a new tube of some sort. However, the Ebay part sure seemed a lot easier and more functional.

I've also been thinking long and hard about the step-down transmission. If you remember my May 22, 2007 post, I talked about using the Model A Ford 3-speed as a step-down transmission (http://oc-3restoration.blogspot.com/2007/05/detour-before-going-to-garage.html).

I continue to read posts by OC-3 owners (http://www.cletrac.org/) that absolutely rave about the improvement obtained when a Model A transmission is installed. The Model A gives you 9 forward speeds instead of 3 and brings the 1st gear speed down from 2.02 to 0.64 mph. This allows you to really push dirt and it saves a lot of wear and tear on the clutch, engine, transmission, final drive gears, etc. As I think about all of the abuse my old OC-3 has taken over the years I begin to think the step-down transmission should have been installed years ago.

So, with all of that being said I have concluded this restoration will include a Model A step-down transmission. If the crawler is stripped down to the frame now is the time to make the upgrade.

There are a couple of ways of making this happen. 1) Find a "factory" Trasco transmission conversion from the 1950's. This is not likely going to happen. Original Trasco conversions are gold in the OC-3 community (see picture to the left). 2) I have had some conversations with some Stout engineering students that have foundry classes. If I could borrow the Trasco bellhousing owned by Mike, the Woodbury parts source (see June 5, 2007 post), the students could make a mold of it and thus be able to pour a new bellhousing. They would get a great class project and I would get a new Trasco bellhousing. 3) Make my own bellhousing conversion. At one time I thought this would be a long shot but some very talented folks on http://www.cletrac.org/ have posted some instructions on how they were able to make the conversion happen. It wouldn't be an easy job but it isn't an impossible task either.

The picture to the right is a factory bellhousing that has be cut down 3 inches and then a plate was welded to it that mates with the Model A transmission. John de Marrais and Dick Wolcott have posted some great information and instructions about the conversion at: http://www.cletrac.org/pages/auxtrans.html

Dick Wolcott used de Marrais' information and instructions and took it to the next level. He recently posted 22 pages of instructions and illustrations at: http://cletrac.org/media/aux_trans/HG_Aux_trans.PDF

So, that is all for now. . .As winter drags on I hope I'm able to report on some progress from my heated garage.

Goin' to the Carwash. . .

Not much has been happening with the OC-3 since it was stacked in the shed for winter. I've been struggling to get the appropriate regulator installed on the spare air tank. The first regulator I bought was defective right out of the box. I never opened the box on the second regulator. Upon getting it home I noticed it didn't meet the max PSI for my compressor. I'll get it right eventually.

In mid-October, on a relatively warm and sunny day I loaded the crawler frame into the back of the mini-van (I really need to get a hitch on that thing) and took it to the car wash. I invested in the "unlimited wash" option. I rinsed, washed, foamed, degreased, rinsed, foamed, degreased, rinsed, washed, and rinsed. The frame cleaned up rather well. It should make the paint stripping process a little cleaner and a little easier.

Engine Stands are a Good Thing

My co-worker George is a very skilled and experienced mechanic on many different levels. It took me awhile to realize, "Hey, I bet George has an engine stand." He sure did and he was kind enough to loan it out to me. It is a slick set-up. It will make it much easier to work on the engine with the ability to rotate it 360 degrees. It also makes it much easier to move it out of the way. . .I just wheel it around. Thanks again George.

A Two-Car Garage?!?

Yep, that is a picture of two cars in the garage. Something that hasn't been seen since last April. The garage is close to original condition. The work bench still needs some organizing, the shelves need to be tidied up, and there is an oil stain on the floor that will probably never go away.

However, the main goal has been met. We stayed one step ahead of Jack Frost. No one had to scrape car windows before work.

Packing the Shed for Winter

Just as you can fit a fully assembled OC-3 into a 12x16 yard shed. . .you can fit a fully disassembled OC-3 into a 12 x 16 yard shed. It just takes a little cleaning and organizing.

The cleaning and organizing actually took the better part of two afternoons last weekend. It had been quite some time since the shed had a good going through. I did have help, my 5 year old daughter was my "helper". She kept track of her breaks in the shade. I lost track after she announced, "I'm going to take break number 8 now."

When we were all done I was able to pack away the OC-3 without using much more floor space than what was occupied by the formerly cluttered version of the shed. In fact, I was able to tell my wife that we had room to park one more OC-3 in the shed if we happened to come upon one. She was not amused.

ANY PICTURE THROUGHOUT THE BLOG CAN VIEWED UP CLOSE BY SIMPLY CLICKING ON THE PICTURE. . .