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Old 12-13-2013, 07:13 AM   #16
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problem with rebuilding a starter motor


The winding in the solenoid can be fine and pull in the plunger but the actual contacts can be worn out and no longer making good connection.

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Old 12-13-2013, 05:31 PM   #17
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problem with rebuilding a starter motor


The pic is a Ford starter and solenoid, but they all look generally alike.

To test out of car, connect a strong 12V power source (eg car battery and jumper cables to the unit). A weak source may not power the motor.

The Negative can clamp to one of the starter mounting ears.

If you touch the positive Briefly to terminal "M" the motor should spin. Stand clear as you do this, the motor is liable to jump/roll from the torque.

Touching the positive to terminal "S" should operate the solenoid, but not the motor.

To test the whole thing, clamp the positive to terminal "B". Then use an old screwdriver or insulated wire (w/ ends stripped) to jump some power from "B" to "S".
Again, be prepared for the motor to move.
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noquacks (12-15-2013)
Old 12-15-2013, 11:11 AM   #18
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problem with rebuilding a starter motor


Good to know, oso- I will try that very soon.....
update:

I went through this entire tedious test method:

http://www.ehow.com/how_8197179_test-dc-armature.html

The armature checks out!! I cant figure this dang thing out. Spent sooo much time on it already. sheesh. Not giving up yet, though. Einstien said "so many otherwise breakthroughs are missed when the experimenter gives up just before the discovery is about to be manifested". Or something like that- please feel free to correct the quote.........
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Old 12-15-2013, 12:42 PM   #19
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problem with rebuilding a starter motor


revellation!! Einstein was right!! I followed Oso's steps above, and man, touching M terminal with Pos voltage sparks!! Smokes!! I immediately pulled it away, of course. Then, I put an ohmmeter on the M and base (ground) and I get continuity (0.3-0.4 ohms) where I should get infinity(right?)!! Im shorting the motor out somehow!! What the heck did I do wrong, people????!!!!

Oh- touching terminal S like it says above does make the solenoid "pop" out, pushing "clutch" forward. So, that part of it is OK. I assume because of that solenoid is good(?) Keep in mind, I didnt do anything to the solenoid before dismantling the motor- and it worked nicely before with old brushes (before dismantling to put on new brushes).
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Old 12-18-2013, 04:48 PM   #20
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problem with rebuilding a starter motor


finaly got it, man, what a finicky situation- starter shop blew out some spec of dust, apparently, cuz they too were puzzled as to why it was shorting out. They repeated it 2X, take apart, mount it together. Finally, blew out minor dust with compressor, and it started. But, we were on the right track, people. Im glad yous were there to see me through it- we tried our best.

Big thanks to all here.

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