So my father-in-law and I took the thing apart to have a look. It seemed as though the armature was siezed inside the housing. We found that the commutator and all the brushes and springs appeared new. When we opened it up though there was a pile of tiny tiny black filings. Almost like little balls. They were blackened like they may have been from arching or something. Enough of them to fill up a teaspoon. We got what we felt were all of them out, cleaned everything up with some emry cloth and wd40, put it all back together and still nothing. Im at a loss. I really don't want to pay to have it rebuilt twice. The solenoid is new and working fine. It seems to function normally. Its the motor itself that just wont spin. Any suggestions?
One would hope, but there is such a thing as "new-defective." That it pulls in doesn't mean the internal switch makes contact. With a volt meter check that the lug leading to the motor armature goes "high" (12 V, B+) when the solenoid is energized. If not, it could be the internal contacts OR the motion could be limited in some way; so even though the plunger comes in, it isn't allowed to go far enough to "make" the contacts.
