Re: 51Packard's....51 Packard
Posted by Charles On 2011/1/25 18:38:13
1-25-11
Thanks for the warning about PB Blaster. My gut told me it wasn't a good idea and I'm glad I mentioned it here first.
This is what I have to report thus far.
I pushed the insulating plate back down. Tried the motor on the battery again, now that the gear housing is removed. Some sparks by the contact with the battery, but no movement or noise.
Next I lifted the insulating plate again and sprayed the inside of the motor with contact cleaner. So much so, I could hear it sloshing around so I shook the motor some to get it all around. Then I drained the excess and closed the plate again. I did not have any abrasives other than sandpaper so I used a utility knife to scrape at the two pads with springs attached (brushes?) on top of the insulating plate. I did not touch the copper armature that they rub against. Instead I sprayed the whole thing with contact cleaner again and wiped the copper.
Took some pliers and was able to turn the motor by hand. It moved fairly easily, but there was a sound like sand rubbing. The motor also would lift up and down inside the housing about a 1/4". I guess that is a good sign that it is not stuck.
Tried the motor on the battery again. Again there were small sparks with contact, but no movement. Then I thought that maybe that battery was in bad shape from sitting so long. I pulled out my battery charger and hooked the motor to that.
Now I could hear a hum from the motor and the housing felt like it was vibrating a little, but no movement. Tried the other wire, but that did not work either. While connected, I tried to move the motor shaft around with my hand, but that didn't get it to move. Then I saw a small amount of smoke so I disconnected everything and ended the experiments.
Is there anything else I should try or did I do something wrong? Should I now drill out the screws on the bottom of the motor or would that be useless since the motor turns?
Attach file:
(104.44 KB)
(89.14 KB)
Thanks for the warning about PB Blaster. My gut told me it wasn't a good idea and I'm glad I mentioned it here first.
This is what I have to report thus far.
I pushed the insulating plate back down. Tried the motor on the battery again, now that the gear housing is removed. Some sparks by the contact with the battery, but no movement or noise.
Next I lifted the insulating plate again and sprayed the inside of the motor with contact cleaner. So much so, I could hear it sloshing around so I shook the motor some to get it all around. Then I drained the excess and closed the plate again. I did not have any abrasives other than sandpaper so I used a utility knife to scrape at the two pads with springs attached (brushes?) on top of the insulating plate. I did not touch the copper armature that they rub against. Instead I sprayed the whole thing with contact cleaner again and wiped the copper.
Took some pliers and was able to turn the motor by hand. It moved fairly easily, but there was a sound like sand rubbing. The motor also would lift up and down inside the housing about a 1/4". I guess that is a good sign that it is not stuck.
Tried the motor on the battery again. Again there were small sparks with contact, but no movement. Then I thought that maybe that battery was in bad shape from sitting so long. I pulled out my battery charger and hooked the motor to that.
Now I could hear a hum from the motor and the housing felt like it was vibrating a little, but no movement. Tried the other wire, but that did not work either. While connected, I tried to move the motor shaft around with my hand, but that didn't get it to move. Then I saw a small amount of smoke so I disconnected everything and ended the experiments.
Is there anything else I should try or did I do something wrong? Should I now drill out the screws on the bottom of the motor or would that be useless since the motor turns?
Attach file:
(104.44 KB)
(89.14 KB)
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