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Post by DirtCleaner on Dec 3, 2014 21:27:39 GMT -5
While not my greatest moment it certainly did create a learning experience. First is the 12" former circular blade. First thing I notice was that the shaft would slide back and forth. Had been cutting fine and only noticed it when picking out a small rock chip from the small gap. (The worn out crumb catcher has been that way for a long time.) So I start cleaning and taking the saw apart to see what was up. After I pulled the shaft cover off I found these two set screws: Checked the other two and found them to be loose as well. Re-installed the two that fell out. Found my spare blade and, after going to the hardware store for a new square key for the pulley end (The original disappeared during the blade event.) put it on. Now just need to wait for the fluid to go through the paper bag filter and should be back in business. Will keep a much closer eye on the shaft bearings and might loc-tite them in if they start loosening again.
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quartz
Cave Dweller
breakin' rocks in the hot sun
Member since February 2010
Posts: 3,352
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Post by quartz on Dec 3, 2014 23:52:21 GMT -5
Might try some Ny-Loc set screws, hold well and easy to remove if necessary. They have a little round piece of nylon in the side, locks 'em in pretty well.
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Post by Rockoonz on Dec 4, 2014 0:18:10 GMT -5
I use the low strength loctite on all my setscrews, only takes a tiny drop to keep them from vibrating loose.
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QuailRiver
fully equipped rock polisher
Member since May 2008
Posts: 1,640
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Post by QuailRiver on Dec 4, 2014 2:00:00 GMT -5
May be just the photos but it looks like the bearings wore grooves in your arbor shaft? If they did that can cause extra vibration and it will probably be difficult to keep the arbor from slipping loose in the bearings again because the inside diameter of the bearings will be too large for the outside diameter of the worn shaft. I've had to replace a couple of these Lortone arbors on both 10" and 14" saws for this same reason. I would recommend when it does come time to replace that arbor that you order the arbor with the machine turned flange attached. It will make your blade turn truer than the type shown in your photos that uses flange washers on both sides of the blade. Larry C.
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Post by DirtCleaner on Dec 4, 2014 8:23:08 GMT -5
May be just the photos but it looks like the bearings wore grooves in your arbor shaft? If they did that can cause extra vibration and it will probably be difficult to keep the arbor from slipping loose in the bearings again because the inside diameter of the bearings will be too large for the outside diameter of the worn shaft. I've had to replace a couple of these Lortone arbors on both 10" and 14" saws for this same reason. I would recommend when it does come time to replace that arbor that you order the arbor with the machine turned flange attached. It will make your blade turn truer than the type shown in your photos that uses flange washers on both sides of the blade. Larry C. Fortunately, what you are seeing is dirty oil. That shows the extent of the possible side to side movement. During running I am sure it never moved anywhere near that far. But will look again tomorrow. And will get some loc-tite and set the screws in correctly.
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