LumberJocks

Table saw blade won't spin

  • Advertise with us

« back to Power Tools, Hardware and Accessories forum

Forum topic by tazboy posted 08-17-2013 11:02 PM 2707 views 0 times favorited 23 replies Add to Favorites Watch
View tazboy's profile

tazboy

23 posts in 523 days


08-17-2013 11:02 PM

When I turn on the table saw I get a humming sound from the motor. I also get a ticking sound which I believe is from the relay. The blade spins freely, by hand, when it’s off, but it won’t spin after I turn it on (haven’t tried it by hand when it’s on). The capacitor is not swollen nor is there any leakage coming from it. What could be causing the table saw not to work properly?

Thanks

EDIT:
This is a Rockwell 9” 34-580 table saw.


23 replies so far

View Bill Davis's profile

Bill Davis

226 posts in 2678 days


#1 posted 08-17-2013 11:15 PM

My best guess is the capacitor. They don’t have to be swollen or leaking. They are not that expensive. Just replace the one you’ve got and try it. Or pull the motor and take it into a motor repair shop.

View cutmantom's profile

cutmantom

297 posts in 1788 days


#2 posted 08-17-2013 11:21 PM

Could be the centifugal switch

View tefinn's profile

tefinn

1220 posts in 1190 days


#3 posted 08-17-2013 11:23 PM

+1 on what Bill said. It might also be the centrifugal switch in the end of the motor. Try blowing out the motor, sometimes sawdust builds up in the switch.

Edit: Cutmantom posted while I was typing

-- Tom Finnigan - Measures? We don't need no stinking measures! - Hmm, maybe thats why my project pieces don't fit.

View TopamaxSurvivor's profile

TopamaxSurvivor

15090 posts in 2429 days


#4 posted 08-17-2013 11:28 PM

If it is the cap, it should go if you give it a spin by hand. If it is the centrifugal switch, you might whack the motor on the end with a mallet. It may go and maybe not.

-- "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

View Shawn Masterson's profile

Shawn Masterson

1262 posts in 702 days


#5 posted 08-18-2013 01:01 AM

spin it and then turn it on while it is still spinning.

View TCCcabinetmaker's profile

TCCcabinetmaker

925 posts in 1108 days


#6 posted 08-18-2013 01:24 AM

1. What kind of saw is this?
2. My contractor saw is broken at the moment, it does the same thing, motor is fine, but the gears that drive the blade are, shattered… May be a similiar problem.

-- The mark of a good carpenter is not how few mistakes he makes, but rather how well he fixes them.

View Marcus's profile

Marcus

1081 posts in 773 days


#7 posted 08-18-2013 01:25 AM

Another vote for a dead cap .

View TCCcabinetmaker's profile

TCCcabinetmaker

925 posts in 1108 days


#8 posted 08-18-2013 01:27 AM

Not enough information to go off of to say what the problem is, you can say this or that, but without knowing what it is, how it’s driven, we don’t know, could be a broken belt… Motors hum when they are on.

-- The mark of a good carpenter is not how few mistakes he makes, but rather how well he fixes them.

View grizzlymunchin's profile

grizzlymunchin

47 posts in 497 days


#9 posted 08-18-2013 01:42 AM

if your bearings are bad the motor will hum sometimes, can you spin the blade freely very easy or is it hard if the bearings are bad the blade will lock and unlock sometimes take the belt off and see what happens

-- woodshop by the cornfeild

View grizzlymunchin's profile

grizzlymunchin

47 posts in 497 days


#10 posted 08-18-2013 01:44 AM

thats how I found out my bearings were bad at first I thought I burnt the motor but it was just the bearings so take the belt off and make sure it’s the motor

-- woodshop by the cornfeild

View tazboy's profile

tazboy

23 posts in 523 days


#11 posted 08-18-2013 01:06 PM

Ok. So I went down and started the table saw. It actually started spinning by itself. Unfortunately, it spun very slowly. I applied a small resistance to the blade, it stopped and then it wouldn’t spin back up even if I helped it spin. Also, there was a burning smell. I’m guessing that rules out the capacitor. Could it still be the centrifugal switch?

View grizzlymunchin's profile

grizzlymunchin

47 posts in 497 days


#12 posted 08-18-2013 06:01 PM

sounds like bearings are cold that means it will start till they get hot and swell then the saw locks up have you taken the belt off yet and tried the motor by itself?

-- woodshop by the cornfeild

View TCCcabinetmaker's profile

TCCcabinetmaker

925 posts in 1108 days


#13 posted 08-18-2013 07:19 PM

You do realize that though people sound like they know exactly what’s wrong with your table saw, your table saw may not even have the parts they are talking about…..

Table saws are not made the same way, some are gear driven, some are belt driven….. INFORMATION is needed to help diagnose your table saw, and from what you are saying it would be best before you burn out the motor, if that’s not just the brushes going out as well….

-- The mark of a good carpenter is not how few mistakes he makes, but rather how well he fixes them.

View SCOTSMAN's profile

SCOTSMAN

5594 posts in 2339 days


#14 posted 08-18-2013 07:29 PM

Why not get someone who knows about these things and can be trusted these days sadly not to screw you because of your ignorance of the problem (such people are only too frequent these days sorry but it’s true) then play it by ear or better still contact the manufacturters of the saw for advice. Alistair

-- excuse my typing as I have a form of parkinsons disease

View papadan's profile

papadan

1156 posts in 2122 days


#15 posted 08-18-2013 07:40 PM

Lots of advice here, but none I would listen to because the most important has not been mentioned. DON’T TRY SPINNING THE BLADE WITH THE SAW TURNED ON OR EVEN PLUGGED IN! Your fingers are worth more than that. Pull the plug then remove the belt. Now figure out if it is bearing or capacitor or what ever.

-- Carpenter assembles with hands, Designer builds with brains, Artist creates with heart!

showing 1 through 15 of 23 replies

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com

Latest Projects | Latest Blog Entries | Latest Forum Topics

GardenTenders.com :: gardening showcase