tap Posted November 4, 2019 Share Posted November 4, 2019 I recently bought a very dirty champion blower (not 400... the smaller type that has plain bearings), which i was able to quickly clean up into fine working condition. Unfortunately, for some reason I decided it was a good idea to disassemble it for full cleaning. After attempting unsuccessfully to tap out the shafts with a hammer, the main shaft to which the handle attaches is now almost completely seized. (It will move when manually forcing the companion gear; the large one on the other shaft.) Will this shaft be removable with an arbor press, or are there further obstructions? If not, how is it disassembled properly? Thanks for the rescue. -tap Quote Link to comment Share on other sites More sharing options...
tap Posted November 4, 2019 Author Share Posted November 4, 2019 Update: after a bit more reading, I deduced that the pin which I had previously thought nothing more than a locating pin for the top cover is actually (also) a retaining pin for the crank shaft. I ground a larger flat onto the side and pulled it out. My previous hammering had bent it, and it wouldn't have pushed through to the other side. The shaft was then easy to remove with tapping. Unfortunately, the shaft or bearings (which are simply holes machined in the cast iron body) have become distorted from my prior attempts at removal, and the shaft is now a very tight fit. I will gradually reduce its diameter with fine sandpaper until it is again fit for service. This is not ideal, but a reasonable solution given the cost of machining a new shaft (assuming only the shaft is at issue). The gears remain in fine shape, and I will not make the mistake of removing the other shafts. The immediate companion shaft (not the rotor shaft) has no apparent retaining pin, but still did not move with my earlier efforts. Yes, I did remove the large gear set screws. The smaller of the two gears (about 1" diameter) on this second shaft has no apparent set screw, and never loosened. I believe this is a model 40, but it is not marked on the casting. As a final note, a previous thread from 2010 on this subject is out there, but the tale is mostly told in images whose links are defunct. Very frustrating. -tap Quote Link to comment Share on other sites More sharing options...
Irondragon Forge ClayWorks Posted November 5, 2019 Share Posted November 5, 2019 If it ain't broke, we will fix it till it is. Quote Link to comment Share on other sites More sharing options...
tap Posted November 5, 2019 Author Share Posted November 5, 2019 3 hours ago, Irondragon Forge & Clay said: If it ain't broke, we will fix it till it is. I'll learn one of these days. I finally got it all back together and spinning smoothly, the shaft polished up well enough for my use, ready for another hundred years of service I'm sure. Quote Link to comment Share on other sites More sharing options...
pnut Posted November 5, 2019 Share Posted November 5, 2019 I have a bufco 700 that I was going to take apart for a full cleaning but this is exactly what I am afraid of. It's working now it's just a little stiff. I'm going to put a few drops of ATF in the oil hole and see if it helps before I open it up. Glad you got it working again. Pnut Quote Link to comment Share on other sites More sharing options...
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