Question about Hitachi DH40MRY 1 9/16 In. Sds Max Rotary Hammer

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Hello, (dh40mr hammer drill) using as a hammer breaker, using for a short while then a smell of burning (similar to burning clutch on a car). checked the brushes, they are fine. tool works (runs) but at a slow speed and very low power.

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  • andyw 6 May 11, 2010

    have you got it on reverse

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Armuture is going out.

Posted on Jul 30, 2009

  • shane covert May 17, 2010

    have you tried cleaning the armuture,where the brushes ride?take very fine sandpaper and clean until it is shiney.

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Posted on Jan 02, 2017

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