electric drill started shooting sparks now dosn't work

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Old 11-21-09, 05:05 PM
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electric drill started shooting sparks now dosn't work

I have a Miluakee Hole Hawg I was using today when suddenly abnormally large sparks started shooting inside the dust vent. The drill stopped working. I pulled the trigger maybe 5 more times. Sometimes it would shoot huge sparks, kinda run and sometimes nothing would happen. I was drilling holes for electrical with a 1 inch auger bit. The Hole Hawg has a rather low amount of use compared to what these should be able to handle. Any ideas what the problem might be and/or where to start looking? Thanks for any help.
 
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Old 11-21-09, 05:20 PM
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Yeah, unscrew the brush holders and pull them out. I feel you will find they are toast. You can buy new ones and provided you haven't boogered the innards, you will be fine with new ones.
 
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Old 11-22-09, 10:28 PM
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The brushes didn't look toasted, but I did think I saw something in there. I stuck a hook in there and pulled out a small dust/hair ball the was lodged behing one of the brushes. I could clearly see how this would cause arcing. I cleaned and put it back in. Now there are very very small, pretty constant, blue sparks constantly under both brushes, I think this is normal though...?
 
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Old 11-22-09, 11:24 PM
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A very small consast bleu sparks from the brushes is normal as long the commuaitors are not damaged you are fine with that part.

Merci.
Marc
 
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Old 11-23-09, 07:51 AM
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Excellent, thank you all for your help. I was really upset with Milwuakee when I thought I cooked my drill.
 
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Old 11-23-09, 09:52 AM
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That is a really nice drill -- would be a shame if it was toasted.
 
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