Hello, This is the first time I have posted here. I have just recently bought a Cat Ten, which I want to restore. The tractor has been sitting for 20 years or more, under a shed, and is very worn out. The engine is stuck, sheet metal probably fair to poor, and needs pins and bushings, probably steering cluch work, ect... It has the original plates on it, but I cannot read them. I would like to know the serial number and when it was built. The engine has T-33 which I think is the part no. for the block. Above it is A-169, that I wonder is the engine serial no., and below it is CWC. Anybody have any ideas?? Thanks. PS I'm in East TN.

The Cat book I have shows the SN to be PT- plus the number of the tractor when it was built. It doesn,t list when production started but some guys on here have more on the years when tractors were made.

As SJ says, the Ten's serial number started with the letters "PT". There was a brass plate on the back of the seat that had the serial number on it, and sometimes that is missing. The Ten was made from 1928 through 1933, and there were 4932 of them made, all in Peoria, Illinois. They were made in two gauges, 37 inches and 44 inches (distance between the center of the two tracks). The Ten was made in a high-crop version as well as the standard version. GWH

Member2103,

There are a few places you can look for the serial number.

1) In front of the seat, there is a cover plate. If you have a pto, there will be an engaging handle through the center of it. If no pto, just a cover plate.
Look along the left, forward edge of the cover plate. The number was stamped into the transmission case, ( the machined flat area that the cover plate bolts to) You may need to scrap paint off to see it.

2) Check the flat pad for mounting a light on the right side upright support for the radiator.

3) Could be in two different locations on the engine. Both on the left side. One possible location is the flat pad that a generator would mount to. The other is just below it, in the curved section of the engine block.

Clean the areas real good. Sometimes the stampings are a bit faint. You can use chalk to highlite the stampings.

I think nearly all the sheetmetal is available from different vendors. You can use pins and bushings from a John Deere MC Crawler. Engine can be un-stuck. It can be bored and have liners installed so you can use the orginal pistons. Rings are available through Hastings. Main clutch, transmission brake, brake bands and steering clutchs can all be relined.

There really isn't much you can't do to them, it just depends on how far you want to take it...and how deep your pockets are!

Let us know what you need as far as part numbers or services.

Welcome to ACMOC!

Thanks, I checked all the places you suggested, but no luck. The engine on the right side has the number A-169. I looks like it was on a plate that was fastened with 2 slotted screws on the mold before it was cast. This is the only number I have found besides part numbers that usually start with "T". Thanks, Mark

The earlier tens have the number stamped on the left side of the engine block just below the first 2 cylinders and to the left of the Carb if your looking from the side. I have a 10 parts machine if your in need of parts