Bosch 1199 VSR Hammerdrill - quit

Discussion in 'Tools' started by Sparky617, Jun 15, 2018.

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  1. Jun 15, 2018 #1

    Sparky617

    Sparky617

    Sparky617

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  2. Jun 15, 2018 #2

    Sparky617

    Sparky617

    Sparky617

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    According to the website I linked above the brushes are the most likely cause followed by the switch.
     
  3. Jun 15, 2018 #3

    nealtw

    nealtw

    nealtw

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    Check the condition of the spring and the connection to the brushes, usually you can see the problem
     
  4. Jun 15, 2018 #4

    Snoonyb

    Snoonyb

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  5. Jun 16, 2018 #5

    joecaption

    joecaption

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    Brushes sticking in the holders, worn brushes, dirty commentator, trash between the segments in the commentator, bad cord.
    Dead segment in the commentator.
    Unless the brushes are so worn there not making contact with the commentator that's not the issue.
    Brush holder, simple to check, slide the brush up and down, sticking, remove the brush and blow it out with air.
    Amature glazed wipe it down with sandpaper.
    Clean up between the segments on the armature with flat bladed jewers screwdriver.
    Dead segments in the armature can be checked with a volt ohm meter set on ohms between the segments.
     
  6. Jun 18, 2018 #6

    Sparky617

    Sparky617

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    I have power through the switch and to the contacts on the brushes. I'm not a contractor so over the 7 or 8 years I've owned this it hasn't gotten the use a contractor would give it in a couple of months.

    The brushes look OK and are making contact. I need to dig into a bit more with my VOM to check for continuity. It was working ok before it stopped, no excessive sparking or problems with not starting. When I went to use it last weekend it was like it wasn't even plugged in, not a twitch, nothing. I did blow it out with compressed air. I'll pull the commutator out and see it looks like.
     
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