LumberJocks

Delta 34-670 table saw loss of power

  • Advertise with us

« back to Power Tools, Hardware and Accessories forum

Forum topic by pweissmd posted 06-22-2012 01:36 AM 6041 views 0 times favorited 7 replies Add to Favorites Watch
View pweissmd's profile

pweissmd

2 posts in 2001 days


06-22-2012 01:36 AM

Topic tags/keywords: delta problem loss of power tablesaw

have a Delta 34-670 table saw I bought used 20 years ago. It has been fabulous – until today.

working on a project with a lot of 3/4” MDF. Saw was cutting it fine but after many cuts, the blade now stops (saw does not cut out!). Thought it was the blade – changed it to a new one – no difference.

This is a direct drive saw so it’s not a belt problem. Read in some of the other forums on Delta table saws that it could be I’ve worn the brushes out (good news) or that I am burning the motor out (bad news).

would appreciate any thoughts before I start taking it apart or looking for a new saw!!

Thanks!

-- Peter, Lake Anna, VA


7 replies so far

View TopamaxSurvivor's profile

TopamaxSurvivor

18088 posts in 3512 days


#1 posted 06-22-2012 01:53 AM

Check the brushes. May be stuck on the start winding. Rap it sharply with a mallet and / or move the blade and try to restart.

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

View MrUnix's profile

MrUnix

5990 posts in 2035 days


#2 posted 06-22-2012 02:36 AM

When it stops cutting, do you hear the motor still running or does it just hum? There is a belt on that machine, but it is internal to the motor so it appears as if it were a direct drive universal motor. To fix it, you would need to drop the motor and dismantle it a bit. That would be my first guess. Brushes and bearings could also be the culprit, but it sure sounds like a slipping/worn belt problem from your description.

Belt in question is part #226 below:

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

View knotscott's profile

knotscott

7785 posts in 3211 days


#3 posted 06-22-2012 03:05 AM

I think Brad’s on the right track. There is a small belt that could very well have broken.

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

View TopamaxSurvivor's profile

TopamaxSurvivor

18088 posts in 3512 days


#4 posted 06-22-2012 04:08 AM

Direct drive isn’t so direct, eh? ;-))

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

View NormG's profile

NormG

5878 posts in 2839 days


#5 posted 06-22-2012 04:20 AM

I know someone who just had their belt break, it was $13.00 plus shipping from EBAY

-- Norman - I never never make a mistake, I just change the design.

View pweissmd's profile

pweissmd

2 posts in 2001 days


#6 posted 06-22-2012 01:00 PM

Wow! I’m impressed with the fast response. I think I’ll enjoy this group!!

MrUnix: a belt in the motor housing??! What a surprise – but may be a good one. I see part #226 above.

Yes – the blade stops spinning, I don’t hear any significant hum. Based on my limited experience, it seems like a slipping belt.

Building a couple of night stands using 3/4” MDF – pretty dense stuff and the “slipping” just got worse as I kept cutting.

Okay smart guys – how do I get to the motor?

Thanks again to all! Really appreciate the helpl!

-- Peter, Lake Anna, VA

View Knothead62's profile

Knothead62

2581 posts in 2797 days


#7 posted 06-22-2012 01:04 PM

MrUnix, I find your expertise to be amazing. It is also amazing to see the knowledge and experience on the LJ forum!

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