Question about Dewalt & Variable Scroll Saw

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My Dewalt DW788 scrollsaw is about 2 1/2 years old. I use it occasionally to make small puzzles and decorations for gifts. Lately is has been quite a bit noisier and more vibration. The blades are tight, but it is very hard to control and track along a line. Any suggestions? I saw online something about bad bearings.

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Posted on Jan 02, 2017

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  • 8 Answers

SOURCE: Dewalt Table Saw

I don't know about Cleveland, but a while ago I replaced the bearing on my Sears Craftsman saw, and it wasn't a hard fix. I would expect any competent repair shop could do the repair easily. If you can get the arbor off and take it to the shop, that would be ideal. It only takes loosening a few bolts to get it off. I first removed the cast iron top from the sheet metal base so I could turn it over, but it can be done from the bottom, too. Just be prepared to eat some sawdust. The most specialized thing the shop would need is a bearing press to get the bearing in and out of its seat, and many shops would have these; they aren't very expensive. Maybe a good machine shop which does small jobs could do it for a small fee. A good place to find these is at your local auto parts store, such as NAPA or O'Riellys (here in MIssouri, anyway, but you get the idea). Your auto repair shop probably knows one or two they use for 'turning' brake drums, etc. BTY, I didn't have a bearing press and I did the job with carefully tapping the bearing back on with a sleeve made from a piece of scrap pipe. Tauton Press makes a great DVD on tuning up your saw after this fix, as you want to make sure
it is square with the table in two dimensions - parallel to the miter saw slots and perpendicular to the top. Good luck.

dcm

Posted on Oct 01, 2008

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  • 1 Answer

SOURCE: dw788 scroll saw knocking/vibration sound

http://www.scrollsaws.com/SawReviews/DewltTuneUp.htm is a link to a possible solution on scrollsaws.com

It did not fix my problem. My problem is in the "CON ROD ASSY" (part #82) and I found VERY TINY almost microscopic play in the bearing. I took the assembly apart, put it back togerther SEVERAL times and on my last ditch effort, it solved the knocking noise.... I don't think it will last long and probaby just have to replace the part or try to buy the same type bearing for cheap and press it in without damaging it so I don't have to get ripped off on the high dollar Dewalt part.

Posted on May 17, 2009

al_kupchella
  • 843 Answers

SOURCE: Saw has no power.

Does the motor continue to run, but the arm stops? It sounds like the set screw on the motor shaft is loose. See the exploded view at this link. It's called out as # 97 http://www.dewaltservicenet.com/Products/DocumentView.aspx?productid=5682&typeId=3475&documentId=333

Posted on Jan 27, 2010

sonicboomele
  • 1557 Answers

SOURCE: I lost my manual to my Dewalt DW788 Scroll saw.

he-manuals.com/dewalt-dw788-manual/ -

this should get you back on track

good luck

Posted on May 15, 2010

  • 1 Answer

SOURCE: Dewalt DW788 scroll saw noise

hello,,,i just bought a new dw788

Posted on Aug 30, 2010

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The only moving parts are the on/off switch and the speed control knob and variable resistor. On mine, I had to replace the variable resistor pot. You have to get one with the same resistance rating. If you know what it is, you can get them off ebay. Doesn't have to be designed for a scrollsaw. They're all the same whether they're for a saw or for a radio volume control. Only the resistance needs to be matched. (Well, the way the knob fits on the post has to match too.)

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he-manuals.com/dewalt-dw788-manual/ -

this should get you back on track

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Saw has no power.


Does the motor continue to run, but the arm stops? It sounds like the set screw on the motor shaft is loose. See the exploded view at this link. It's called out as # 97 http://www.dewaltservicenet.com/Products/DocumentView.aspx?productid=5682&typeId=3475&documentId=333

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1 Answer

Dw788 scroll saw knocking/vibration sound


http://www.scrollsaws.com/SawReviews/DewltTuneUp.htm is a link to a possible solution on scrollsaws.com

It did not fix my problem. My problem is in the "CON ROD ASSY" (part #82) and I found VERY TINY almost microscopic play in the bearing. I took the assembly apart, put it back togerther SEVERAL times and on my last ditch effort, it solved the knocking noise.... I don't think it will last long and probaby just have to replace the part or try to buy the same type bearing for cheap and press it in without damaging it so I don't have to get ripped off on the high dollar Dewalt part.

Mar 16, 2009 | Dewalt DW788 Heavy Duty 20" Variable Speed...

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