| Re: Looking for DuoTherm furnace motor [message #294334 is a reply to message #294314] |
Sun, 24 January 2016 18:04   |
 |
Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma:
|
Senior Member |
|
|
dservati1 wrote on Sun, 24 January 2016 16:00Wondering if anybody who has replaced their furnace has any Duo Therm furnace parts laying around that they'd like to donate or sell cheap? I'm specifically looking for the motor for furunace model #65900 series, part# of the motor 314331 thanks. Dave
Dave,
I answered you over on FB, but I put it here in more detail because I don't like the FB format.
Is it locked up?
Or does the shaft turn?
If it is locked up, try penetrating oil on the bearings. When you get it free, let it run unloaded for a little. It may try to over heat without the airflow over it that is is supposed to have so just don't rung it too long.
If the shaft is free, but it doesn't make sparks when you put it on a battery. That is also a common problem, it is probably a hung up brush.
Wrap it with a soft hammed on the end that the wires go in first.
If that doesn't get it, you may have to open it up. This isn't rocket surgery, just pay attention and it will be OK. There may be two lone screws that hold the whole thing together. I hope the nuts are on the brush end.
When you get it open, there are two ways this can go. Either the brush holders are part of the motor frame, or they are on the back plate.
Either way, do what you have to do to get the brushes moving freely. Do not oil them. Look for a cooked spring. It that happened there is a reason, and you will have to find and fix that. Often the lead from the ground brush looses continuity to the brush and the current then goes through the spring and cooks it.
I have done this lots of times and scored about 90%.
Is is worth the effort? You have a 90+% chance to save 1.3 GMC bucks.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
|
|
|
|
GMCforum
Search
Help
Register
Login
Home
