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R4512 Clicking Sound

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Forum topic by lab7654 posted 11-09-2015 12:48 PM 472 views 0 times favorited 4 replies Add to Favorites Watch
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lab7654

264 posts in 1713 days


11-09-2015 12:48 PM

Topic tags/keywords: tablesaw

Alright, so I posted this quite awhile ago but the problem still isn’t resolved. My Ridgid R4512 started to make a loud, rapid clicking noise about a year ago, and since then I’ve been able to work around it by shutting it back off momentarily and turning it back on before the blade slows down, and that eliminates the sound. But as the motor slows itself down, the clicking returns and is back on the next startup.
I brought the saw to a local tool store to try and repair it under warranty, and the first time they thought they had it fixed all they changed was a belt. I brought it back after confirming the sound is still there, and they couldn’t find anything wrong so they “reccomend I just run it until something goes wrong and I can bring it in again for repair under warranty.”
I’ve determined it isn’t anything pulley or arbor related, as that was my first thought. The fact that I can get it to go away after initial startup and it only comes back on shutdown leads me to believe it is something related to the motor. My question is what could it be? Would it be the centrifugal switch? I’d appreciate some help fixing it on my own because the warranty repair place I use is around where I live but the saw is at my cabin, which is 3 1/2 hours away and lugging around a 250lb saw by myself isn’t much fun. Any suggestions would be great.

-- Tristin King -- When in doubt, sand it.


4 replies so far

View Nubsnstubs's profile

Nubsnstubs

826 posts in 1196 days


#1 posted 11-09-2015 01:36 PM

lab, I can’t even guess what your problem might be, but I can tell you about my clicking problems on my lathe. It all has to do with fitting of the bearings and the bearing surfaces. You have 4 bearing pockets, 2 on the motor, and 2 on the spindle. You also have 2 arbors that 2 each bearings fit onto. If any of those surfaces are off by just .001-002”, you will get a clicking sound. It doesn’t sound like very much, but it’s enough to make the noise.

I have that problem only when I put something between centers that has irregular surfaces. After I true up my piece, the clicking goes away. Also yesterday, I had that problem, and noteiced it was because I didn’t have the tailstock tightened to the point it wanted to be. Another turn, and the clicking went away.

It might be that the thrust washers usually installed might not be on your arbor or the motor shaft. It’s also possible that the nut holding the bearings on the arbor could have loosened…. That’s all I got…........... Jerry (in Tucson)

-- Jerry (in Tucson)

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dhazelton

2326 posts in 1763 days


#2 posted 11-09-2015 01:51 PM

My guess is same as yours, centrifugal switch. Here’s some diagnostic steps.

http://www.eurobodallawoodies.org.au/motorfaults.htm

View Karamba's profile

Karamba

116 posts in 403 days


#3 posted 11-09-2015 09:50 PM

How rapid is the sound ? It can be that something is loose and the saw resonates at lower frequencies. One way to figure it out is to try pinpoint the source of the sound with a mechanics stethoscope. They are pretty cheap something around $10 or so. Plus after finishing with the noise problem you can pretend you are a doctor.

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lab7654

264 posts in 1713 days


#4 posted 11-10-2015 12:12 PM

It’s extremeluy rapid, and it’ll keep going even when the saw is full RPM, but I always shut it off and on again before it gets all the way up to speed to stop it. I checked everything and I would imagine that the repair place did the same, but they probably didn’t bother going through the motor. I guess I’ll have to take apart the rear of the motor and see how the centrifugal switch looks.

-- Tristin King -- When in doubt, sand it.

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