chuckwood
Addicted to ArboristSite
- Joined
- Jan 26, 2008
- Messages
- 8,681
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- Location
- near the Great Smoky Mtns. Tennessee
This is the third time I've done this procedure, and each time I've had terrible problems. Why are these things so difficult to remove. With Stihls it's very easy to do with an inexpensive tool, my last Stihl flywheel took only a few minutes on an 026. I've got this L77 suspended in the air by the flywheel, I've soaked it for a day with PB Blaster, I've heated the wheel with a propane torch, and I'm using a "knocker" made from another nut same size as the flywheel nut and welded onto a deep well socket. I've been pounding on this thing and nothing happens. This afternoon I ruined the threads on the nut on the end of my knocker tool and I'm now welding up another one. Out of desperation, I've also been using an air hammer on the end of the flywheel. The air hammer bit is shaped so it goes into the big dimple on the end of the crank, so it can't do any thread damage. I'm very wary of hitting this thing too hard with the hammer for fear of destroying the crank or the case. I'm just about ready to give up and take it to a shop. I could maybe build a puller for the flywheel that attaches to the small threaded holes that take the bolts used to attach the pawl mechanisms. But those threaded holes are very small, it seems to me all I will accomplish there is to strip them out, the flywheel isn't made of very stout metal. This is one job with chainsaws that I really hate. I must take the flywheel off to replace the crank seal.