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Bosch psb 600 drill will not reverse

When reverse slide switch activated drill does not reverse, works perfectly well in forward position

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  • eric reed Oct 26, 2008

    thanks again for the advice, on this drill Bosch use a rotary switch fitted around the commutator actuated by the red slide switch to reverse the polarity of the supply in order to achieve both forward and reverse. Drill had been used in a particularly dusty atmosphere, so a spray of WD 40 cleaned electical contacts of this rotary switch enabling both forward and reverse to be achieved.

    Thanks again

    eric reed


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The red button sits on a lever that changes the polarity of the switch output. If this lever feels loose and you can't feel it engaging anything then you need to split the housing and make sure it is seated properly. If it is, and the lever on the switch is moving fine aswell then you should check all the wires coming out of the switch, and if they are all connected properly you will prob need a new switch.

Posted on Oct 26, 2008

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