LumberJocks

delta table saw arbor suddenly free spinning?

  • Advertise with us

« back to Power Tools, Hardware and Accessories forum

Forum topic by seldomwright posted 08-08-2012 06:31 PM 3819 views 0 times favorited 21 replies Add to Favorites Watch
View seldomwright's profile

seldomwright

8 posts in 774 days


08-08-2012 06:31 PM

Topic tags/keywords: table saw trouble troubleshooting arbor help tablesaw question

hey guys this is my first post here

I have an older second hand Delta 10” contractors saw that suddenly has a free spinning arbor.

Took the blade off, turn the motor on and it makes the usual roar as if its working, and I can see it’s internals spinning, but the arbor just sits. When turned off the arbor just spins freely in my hand.

Any idea what has happened?

It worked fine recently, and most recent cuts were to mdf and seemingly stress free.

Curious if this is a simple problem or if I have to remove the motor and investigate further.

Thanks for reading! -chris


21 replies so far

View dbhost's profile

dbhost

5385 posts in 1889 days


#1 posted 08-08-2012 06:35 PM

Contractor saw? Okay this might sound like a dumb question but I have to ask… Is the belt still attached / tensioned?

-- My workshop blog can be found at http://daves-workshop.blogspot.com

View Granddaddy1's profile

Granddaddy1

181 posts in 859 days


#2 posted 08-08-2012 06:35 PM

Sounds like the key stock fell out on your shaft pulley. Unplug the saw and see if you can spin the blade by hand without turning the motor. If you can, that’s what happened.

-- Ron Wilson - maker of fine firewood!

View b2rtch's profile

b2rtch

4330 posts in 1705 days


#3 posted 08-08-2012 06:41 PM

broken v-belt or key

-- Bert

View seldomwright's profile

seldomwright

8 posts in 774 days


#4 posted 08-08-2012 06:54 PM

So there’s no belt… the arbor comes directly out of the motor… do I have a tilting arbor saw and not a contractors saw? If so, sorry for the name confusion.

Thanks for your quick replies fellas!

View dbhost's profile

dbhost

5385 posts in 1889 days


#5 posted 08-08-2012 06:59 PM

That’s not a contractors saw then. By definition a contractors saw is belt driven, and the motor sticks out of the back of the saw…

Please post your model # up so folks will know what you are dealing with…

It sounds like a lower end direct drive saw like a modern bench top. Delta / Rockwell used to make direct drive saws with full size cast iron tables. They still make direct drive saws with aluminum tables. They are pretty common…

The way the arbor attaches to the motor varies by model in direct drive saws a LOT. Given the model # we can look up an exploded view of the saws drivetrain and help you figure it out…

-- My workshop blog can be found at http://daves-workshop.blogspot.com

View seldomwright's profile

seldomwright

8 posts in 774 days


#6 posted 08-08-2012 07:07 PM

So it is a Delta cat #34-670, and the motor serial # 1313314. It does indeed have a cast iron table.

here’s a google pic of the exact saw
http://www.woodworkingtalk.com/attachments/f12/20734d1297109384-new-me-delta-table-saw-delta-34-670-sm.jpg

Thanks!

View seldomwright's profile

seldomwright

8 posts in 774 days


#7 posted 08-08-2012 07:14 PM

there does appear to be an internal drive belt that could have snapped, http://www.ereplacementparts.com/images/dewalt/34-670_Type_2_WW_2.gif part #226 on that gif

think that’s the culprit?

View toolie's profile

toolie

1762 posts in 1286 days


#8 posted 08-08-2012 09:13 PM

if 226 is a belt that the motor uses to drive the arbor shaft, that could be the problem. would this be called a direct drive saw? kinda has me wondering as there’s no traditional belt driving an exposed arbor. rather, it looks like the belt referred to by the OP is within the carcass of the motor.

-- there's a solution to every problem.......you just have to be willing to find it.

View knotscott's profile

knotscott

5464 posts in 2033 days


#9 posted 08-08-2012 09:21 PM

It’s got a little vacuum cleaner style belt….probably the cultprit.

-- Happiness is like wetting your pants...everyone can see it, but only you can feel the warmth....

View DaleM's profile

DaleM

913 posts in 2041 days


#10 posted 08-08-2012 09:39 PM

I have that same saw. It’s the belt. It’s a toothed or notched belt and the teeth sheer off. It’s only a 20 dollar replacement. The woman I bought the saw from said there was no belt, that it was direct drive and the arbor was broken so she sold it for 50 dollars since she had already bought a replacement saw. I lucked out on that one.

-- Dale Manning, Carthage, NY

View seldomwright's profile

seldomwright

8 posts in 774 days


#11 posted 08-08-2012 11:20 PM

Awesome. You guys have been incredibly helpful!

I’ll pull the motor tonight and take a look at that belt. Fingers are crossed.

DaleM – I put a modern Delta T2 30” fence on this one after a little modification of the fence itself, and the saw is so nice now. And yeah, I paid more for the fence that the saw itself. Good stuff.

View DaleM's profile

DaleM

913 posts in 2041 days


#12 posted 08-09-2012 02:46 AM

I have what I believe is the original fence. My fence had a lot of play in it at the end opposite of the lock with the aluminum outer part having a gap around the steel inner part, but I was able to tighten it up so it works okay now and stays parallel to the miter slot and blade.

Now that I got it all set up, it works well, but it’s still the loudest saw I’ve ever used. Is yours really loud too?

-- Dale Manning, Carthage, NY

View seldomwright's profile

seldomwright

8 posts in 774 days


#13 posted 08-09-2012 03:44 AM

Okay, problem solved, broken internal drive belt.

You guys have been SO helpful today. The belt cost $25 or so. Done.

This saw was purchased of CL for $100, and when the original crummy fence broke a year or so later I replaced it with a modified T2 fence, and so having the motor crap the bed was heartbreaking. So glad to fix it.

Yes DaleM, this thing roars like Airwolf. The bearings sound pretty crunchy when I manually spin the arbor, so maybe now is the time to swap them out, that’s gotta be why this saw is so loud.

View knotscott's profile

knotscott

5464 posts in 2033 days


#14 posted 08-09-2012 11:13 AM

Replacing the bearings sounds reasonable while you have it apart, and could prevent problems down the road. Being that it’s a universal motor, it has brushes, some it’ll still be fairly loud. Come to think of it, those are a consumable and should be checked too.

-- Happiness is like wetting your pants...everyone can see it, but only you can feel the warmth....

View knotscott's profile

knotscott

5464 posts in 2033 days


#15 posted 08-09-2012 11:13 AM

Replacing the bearings sounds reasonable while you have it apart, and could prevent problems down the road. Being that it’s a universal motor, it has brushes, some it’ll still be fairly loud. Come to think of it, brushes are a consumable and should be checked too. (part #207)

-- Happiness is like wetting your pants...everyone can see it, but only you can feel the warmth....

showing 1 through 15 of 21 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