Jams Posted September 18, 2017 Report Share Posted September 18, 2017 I have an oldie-but-goodie Porter Cable model 368-1 Type 2. I have tightened the arbor bolt as tight as I possible can (holding the inner nut with a wrench) but when I use the saw, the blade loosens up. I know the bolt is not too long, because I can get it to bottom out without the blade. I have attached pics of the saw and the arbor parts that I am using. Hopefully they are the correct ones. Is there some friction material I should be adding between the copper washer and the blade? Help! Thanks. Quote Link to comment Share on other sites More sharing options...
JMG Posted September 18, 2017 Report Share Posted September 18, 2017 Try a new washer? https://www.ereplacementparts.com/washer-p-58222.html?osCsid=4uq163gagoigkkduf54hggoeu0 Quote Link to comment Share on other sites More sharing options...
Jams Posted September 20, 2017 Author Report Share Posted September 20, 2017 Thanks JMG. It look like the new washer as a very slight raised rim along the edge on the side that faces the blade. On mine, that is worn out. I wonder if that ridge gives the washer a bit of "spring" to hold tight against the blade and arbor nut. I read on some other forums that a thin card paper washer can also help. I am going to try that first, and if it doesn't do the job, I'll order a new washer. The other irritant with this saw is that you need a very thin 1-1/4" wrench to hold the inner arbor nut. Very hard to find. There are guys selling these on eBay for $20-50! I might just get a regular wrench and grind it down. Quote Link to comment Share on other sites More sharing options...
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