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Old February 2nd, 2008, 00:19   #6
mcguyver
 
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Join Date: Aug 2005
Location: Northern Alberta
Remove the motor brushes and look to see if ther are clean, no arc marks ir heavy pitting. If they are clean, re-install the and spin the motor by hand. It should turn easily.

You can also clamp one of the leads with a meter and you'll know if it's drawing excessive current during free-air running (no-load).
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