In the past two weeks I have burned two of those fans and I have had to learn how they work. The unsealed bearing was original and will last a lifetime if properly maintained. It uses centrifugal force to keep the oil in the hub with a pump at the north end to circulate the oil through the bearing. If the oil gets too low, the pump can't pick it up. The bearing is rather simple being just a shaft through a casting. You can't overfill since too much oil will simply flow out the unsealed end when the engine is not running. I would use somewhere between 45 and 90 W and fill till it runs out the south end. I did install one of the new sealed bearing types. Personally I do not believe they are as good as the originals.
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Today's Featured Article - On the Road with Dave Gohl: Tractors and Farming - by Dave Gohl. I never thought I'd live to see the day, when I could call myself a farmer. What allows me to say this? Well, when our family moved to our 20 acre site near New Prague, Minnesota, I had one thought in mind. You guessed it, farm it somehow. A little history is in order. In my younger days, mom, dad and my brother made frequent visits to dad's youngest brother Pete, who took over the home farm from grandpa MIke. It was the typical set-up, milk cows, pigs & chickens. In the winter, we'd play
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