Odd saw symptom. - Scroll Saw Woodworking & Crafts Message Board

iamtpotter · 10-28-2009, 12:17 PM

Hello all,
I have a Craftsman 315216090 scroll saw that does not want to run when it is cold in the shop. If I heat up the motor with a blow dryer or heat gun, it will then function properly.

I have removed, inspected, and cleaned the motor brushes, and still have the same symptom. The brushes did not appear to be burnt, or worn. I have however ordered new brushes, but they are on backorder.

Do any of you have any other thoughts on what this problem may be?

Regards,

Rolf · 10-28-2009, 12:22 PM

Have you checked the bearings. Old grease turns to glue when cold.

tomsteve · 10-28-2009, 07:02 PM

replace the on/off switch. it's pretty simple and you can get one at any hardware store. worked for me on both my old craftsman and my dewalt

Stoney · 10-28-2009, 11:35 PM

The motors used on most scroll saws have very little starting torque. I suspect as you are warming the motor you are warming the rest of the saw at the same time. If possible keep your saw in a warmer location when not in use. Doing so will probably take care of your problem.

10-28-2009, 12:17 PM	#1
iamtpotter Junior Member Join Date: Apr 2009 Posts: 30	Odd saw symptom. Hello all, I have a Craftsman 315216090 scroll saw that does not want to run when it is cold in the shop. If I heat up the motor with a blow dryer or heat gun, it will then function properly. I have removed, inspected, and cleaned the motor brushes, and still have the same symptom. The brushes did not appear to be burnt, or worn. I have however ordered new brushes, but they are on backorder. Do any of you have any other thoughts on what this problem may be? Regards,

10-28-2009, 12:22 PM	#2
Rolf Senior Member Join Date: Apr 2005 Location: Bellport, LI New York Posts: 3,095	Have you checked the bearings. Old grease turns to glue when cold. __________________ Rolf RBI G4 Hawk, Delta SS350 Philosophy "I don't know that I can't, therefore I can" Proud Member of the Long Island Scrollsaw Association Last edited by Rolf; 10-29-2009 at 12:26 PM.

10-28-2009, 11:35 PM	#4
Stoney Senior Member Join Date: Feb 2008 Location: michigan Posts: 220	The motors used on most scroll saws have very little starting torque. I suspect as you are warming the motor you are warming the rest of the saw at the same time. If possible keep your saw in a warmer location when not in use. Doing so will probably take care of your problem. __________________ Stoney aka Al Making dust with a Hegner 22v and a Delta P20

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10-28-2009, 07:02 PM	#3
tomsteve Senior Member Join Date: Apr 2007 Posts: 402	replace the on/off switch. it's pretty simple and you can get one at any hardware store. worked for me on both my old craftsman and my dewalt