Some relatives contacted me a few weeks ago and said they had bulldozer for me if I wanted it.
I quickly found it is an R5, and I said what the heck is an R5? Never heard of it! Well, now I am a little more educated but I have a lot to learn still.
About 20+ years ago my dad's uncle bought this machine as a farm dozer. He rebuilt the original engine and probably did many other things that no one knows about. He was well known as a talented shade tree mechanic, so I am lucky in that regard. They never got around to putting the blade on after it was delivered, but the blade and pins are all there. His health declined and he passed away before it was finished. The family was happy for me to take it on as a project to finish and put to use in his memory.
It has a hydraulic dozer blade on it, 12v electric start, 12v inline fuel pump, and a PTO on the back with a chain sprocket (I think it was marked Leroy, Olean but I forgot to take a picture). Tag was on the back right of the machine showing the serial number 4H698 dating it to 1937. Sprockets and pads look good. I didn't look at all the links and rollers in my excitement.
The fuel tank was empty and looked rusty inside so I ran a fuel line to a gas can. Cranked over with a new battery but wouldn't start. Narrowed it down to no spark. Found a manual online for the magneto which showed me where to find the contacts, so I cleaned some corrosion off of those and it fired right up!
Prior to this, the oldest machine I've operated is my 955L, so I took an educated guess at the controls and slowly eased it out of the tight barn. Thankfully, that went well. I drove forward, turned left, turn right, and went backwards. Not sure if the parking brake works but we will get there. The right lift cylinder for the blade was gashing fluid from the rod seal. It sounded good to me. It appeared the ammeter and oil pressure guage were functional. I will add a coolant temp gauge asap. I can't afford to make more problems for myself.
So I'm currently setting up a truck to haul it to my place where I can start working on it to get it back in working condition. I have some small jobs for it around my 23 acre property. Probably a couple hours a month of run time, if that. I live just a few miles from the National Pike Steam Gas and Horse Show near Brownsville, PA so maybe I will have it hauled over there for a show or two once I get it looking nice.
Questions:
Does Cat maintain records of who the original purchaser was?
What year did Cat start marking bolt heads with Cat logos?
What type of equipment would this PTO of been used with?
What age range does the dozer blade equipment date to? Was it a "kit" sold by a company or cobbled together?
Suggestions for proper gasoline and additives?
I found the operator and parts manuals on ebay for not much money. No luck on a service manual yet. Any directions on finding that are appreciated.
How should I go about repairing the leaky lift cylinder for the blade? I just rebuilt a cylidner on my 955L myself, and it was pretty straight forward because I was able to get all the parts from the Cat shop and instructions were available. I don't think I need the instruction part, but where do I go to find the right seals for something like this?
Any suggestions for a mechanical temperature guage that will look appropriate on this machine? I don't want to just slap something from autozone on it.
Thanks!



