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A couple of questions regarding PM66 maintenance

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Forum topic by xeddog posted 03-02-2017 07:28 PM 312 views 0 times favorited 3 replies Add to Favorites Watch
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xeddog

173 posts in 2842 days


03-02-2017 07:28 PM

I have been going through my PM66 giving it a good cleaning, and alignment. The process had me wondering . . .

1. How often do you (or should you) go through and make sure it is all still aligned? One obvious reply would be something like ” when your cuts start being a little off ” or so. But do any of you perform this regularly? This would be more important for people like me that have it mounted on a mobile base and move it around a lot.

2. Ever since I have had the saw (more than about 5 years or so), there has been one thing that really bugged me about it. I have seen where someone had a similar issue but from what I remember there was no resolution for him. Anyway, when I make a new zci and raise the blade through it to make the slot for the blade, the next few times that I turned on the saw the blade would ding the sides of the kerf and eventually change it from a zci to a .010ci or so. So this time while I had the top off, I saw the large nut on the end of the pivot shaft and decided to see about tightening that up a little. I did so, and the blade has now shifted to the right a few thou. I’m half thinking OOPS!, half thinking that should have fixed it, and a third half wondering if there is a torque specification for that nut. Owners manual was, of course, not helpful for this. I don’t have it completely put back together yet to see if this had corrected the issue. Maybe later this afternoon.

Thanks,

Wayne


3 replies so far

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xeddog

173 posts in 2842 days


#1 posted 03-02-2017 08:56 PM

Well poopoo. I got it back together enough to try cutting a new ZCI. Same problem. The attached photo shows what happened after cutting the kerf, shutting the saw down, and restarting the saw just once. Where the carbide teeth are is now about .020” wider than it was. It’s the same along the back edge.

Wayne

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AandCstyle

2901 posts in 2092 days


#2 posted 03-02-2017 09:53 PM

Wayne, call PM customer service. They were very helpful for me when I called them with a question about the motor.

-- Art

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xeddog

173 posts in 2842 days


#3 posted 03-03-2017 08:06 PM

Thanks for the suggestion Art. I called them and they did not have any useful answers. They just said it was a warp in the blade or a misaligned tooth, but when I asked how I got a nice clean even kerf when creating the ZCI they had no answer. They also said it could be the arbor bearings, but they are relatively new and this issue pre-dates the new arbor assembly. I’m on my own I guess.

Thanks,

Wayne

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