this one came out of my D2 but I put it into my d4. I had to swap a few parts but nothing major. the one that came out of this ht4 was buried in inches of filth. once I found it under all the crud I pilled it out and broke it down. over all it is in great shape. one of the valves was stuck and the magneto needs a rebuild and I rebuilt the carb as well other than that the cylinders looked great. it should run well when I get it back together .

"Jw74" wrote:

Well I finished braking it all down. I had one stud that was missing and the hole needed to be rethreaded. I then cleaned all the gasket surfaces with a file. The crank Gear came right off with a puller. I used a valve spring compressor on the valve springs and with a couple taps on the valve heads the keepers fell right off. I made sure to label and keep all valves in there original home. A couple of the valves look like they need to be ground down, as well as the seats. I took the crank to a local machine shop to see if it was serviceable. Luckily it was, for the very reasonable price of 60$. Today I ordered some new crank bearings and rod bearings from Florin tractor for 165$, all .030 undersized, they were the best price by far. Thanks to the parts source posting that everyone has been contributing to. I also ordered the seals and all the gaskets from my local cat dealer for around 100$ . I soaked the cab in carb cleaner over night and now is squeaky clean. I still need to drill out the plugs and make sure all those passages are clean as well. I still need to measure the cylinders and decide on what to do with rings. Here are some photos of the latest work. Thanks for tuning in ...more to come

What's the clearance between the main bearings and the crank ?