Well we're making progress - on both the seal and the engine identification.
I pulled the flywheel, dropped the oil pan, and took the crank bearing off to get the seal out. The seal had several numbers on it. I took it to a couple of really good parts places but unfortunately all the numbers were extinct. So I went online and did some searching. I was able to cross-reference some numbers and narrow it down. Interestingly, most of the manufacturers for the seal were military/govt. And I finally located the seal from a military surplus supplier.
Evidently this is a common part for the M151 army jeeps. That gave me an idea for identifying the engine. I did some searching for the engine specs in the M151 jeeps. There were a few, but the common one seemed to be Hercules. The pictures of the M151 jeep engines looked like the engine I have. I found an article from Foley Engines which stated that "the Hercules G1600 serial number is a stamped-in number located near the dipstick. It is 7 digits in length beginning with 491, 490, or 493." My engine has a 7-digit number stamped near the dipstick beginning with 493. I think I found the engine!
I also discovered that this engine was used in White tractors, and I found a picture of one and the hood looks almost identical to what's around this engine.
So at this point as best I can figure this is a Hercules G1600 out of a White tractor.
On another note I've got the seal on order. Hopefully will fix my problem.
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Today's Featured Article - Harvestin Hay: The Early Years (Part 2) - by Pat Browning. The summer of 1950 was the start of a new era in farming for our family. I was thirteen, and Kathy (my oldest sister) was seven. At this age, I believed tractor farming was the only way, hot stuff -- and given a chance I probably would have used the tractor, Dad's first, a 1936 Model "A" John Deere, to go bring in the cows! And I think Dad was ready for some automation too. And so it was that we acquired a good, used J. I. Case, wire tie hay baler. In addition to a person to drive th
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