Dewalt DW705 Type 4 - blade wobble

cjdwight · 11-16-2009

Hello, experts. I have a DW705 (type 4) that has been a reliable workhorse. Recently I noticed that the blade has a distinct wobble, and when the saw is stopped, I can move the blade back and forth about 1/16". The net affect is that this leads to tear out on cuts, even with a sharp 60 tooth blade.

Looking at other posts, sounds like culprits could be spindle, blade washer, and/or bearings. Any insight on where to start would be appreciated. This has been a great saw, and I'd like to keep using it.

TERRY P · 11-17-2009

The most common problem when a blade has a wobble to it is usually the blade washers. If the saw has experenced a kickback while cutting or got jammed during a cut the blade washers are usually where the force will be absorbed. You won't be able to tell by looking at them, and it doesn't take much to damage them (especially when spinning a 12 " blade). But 99% of the time thats the reason for the wobble...

cjdwight · 11-18-2009

Terry - thanks for the tip. I had some good kickback recently when I hit an unseen heavy staple in a piece of lumber - perhaps that's the source of my problem. I'll start with the washers and see where it goes from there.

Again, thanks for the input.
- cjdwight

Sammy · 11-18-2009

I use a Forester blade in combination with a 6" stiffner plate it helps eliminate
any kind of wobble and runout.
Sammy

grnvl · 3 Weeks Ago

Hi guys,I replaced inner & outer washers,I think it helped but the runout is still bad.The saw hasent been used much but I guess it only takes one bad cut [nail]. I can grab the bottom of the blade & move it left to right like the blade is loose.When I do this I think the inner washer moves slightly.Any help on my next step/part to replace would be apreciated.:

mutha4ya · 3 Weeks Ago

Have you tried to wiggle the actual shaft without the blade in it? Try to trace it back, you could have a loose shaft, or bearing that would loosen the action of your saw. Another thing to try is to make sure that your bolt that holds the blade/washers tight is actually going all the way in. Maybe a clogged hole, or damaged bolt? Good luck, and don't stop with the obvious, tools can be tricky...........

grnvl · 2 Weeks Ago

Thanks for the reply MUTHA! The problem seems to be with the inner washer to gear assy housing.You can rock the inner washer,since the washer is new I think the mating surface on the shaft housing is damaged even though it looks fine.

11-16-2009	#1 (permalink)
cjdwight Member Join Date: Nov 2009 Posts: 2	Dewalt DW705 Type 4 - blade wobble Hello, experts. I have a DW705 (type 4) that has been a reliable workhorse. Recently I noticed that the blade has a distinct wobble, and when the saw is stopped, I can move the blade back and forth about 1/16". The net affect is that this leads to tear out on cuts, even with a sharp 60 tooth blade. Looking at other posts, sounds like culprits could be spindle, blade washer, and/or bearings. Any insight on where to start would be appreciated. This has been a great saw, and I'd like to keep using it.

11-18-2009	#4 (permalink)
Sammy Member Join Date: Nov 2009 Posts: 2	blade wobble I use a Forester blade in combination with a 6" stiffner plate it helps eliminate any kind of wobble and runout. Sammy

3 Weeks Ago	#5 (permalink)
grnvl Member Join Date: Feb 2010 Posts: 2	Newbie with dw705 type 2 blade wobble. Hi guys,I replaced inner & outer washers,I think it helped but the runout is still bad.The saw hasent been used much but I guess it only takes one bad cut [nail]. I can grab the bottom of the blade & move it left to right like the blade is loose.When I do this I think the inner washer moves slightly.Any help on my next step/part to replace would be apreciated.:

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

11-17-2009	#2 (permalink)
TERRY P Member Join Date: Oct 2008 Posts: 28	The most common problem when a blade has a wobble to it is usually the blade washers. If the saw has experenced a kickback while cutting or got jammed during a cut the blade washers are usually where the force will be absorbed. You won't be able to tell by looking at them, and it doesn't take much to damage them (especially when spinning a 12 " blade). But 99% of the time thats the reason for the wobble...

11-18-2009	#3 (permalink)
cjdwight Member Join Date: Nov 2009 Posts: 2	Terry - thanks for the tip. I had some good kickback recently when I hit an unseen heavy staple in a piece of lumber - perhaps that's the source of my problem. I'll start with the washers and see where it goes from there. Again, thanks for the input. - cjdwight

3 Weeks Ago	#6 (permalink)
mutha4ya Member Join Date: Aug 2009 Posts: 11	Have you tried to wiggle the actual shaft without the blade in it? Try to trace it back, you could have a loose shaft, or bearing that would loosen the action of your saw. Another thing to try is to make sure that your bolt that holds the blade/washers tight is actually going all the way in. Maybe a clogged hole, or damaged bolt? Good luck, and don't stop with the obvious, tools can be tricky...........

2 Weeks Ago	#7 (permalink)
grnvl Member Join Date: Feb 2010 Posts: 2	Thanks for the reply MUTHA! The problem seems to be with the inner washer to gear assy housing.You can rock the inner washer,since the washer is new I think the mating surface on the shaft housing is damaged even though it looks fine.