Question about Hammering
My HM1211 demolition hammer just stopped working - I have removed the handle to dismantle the motor section and found that the brushes are in excellent condition. I have also removed the motor from the worm gear and applied power using the switch and it again does not work. It is thus evident that the problem is with the motor unit and more than likely the switch itself - does anyone know how I can repair the switch and is there a cut-off? Thanks, Chris
You have to use an ohmmeter to check it, you must check the continuity of motor coil after the switch terminal if in this point you have the reading less than 200 ohms, try checking it before the switch but this time you have to switch it on. If you have the readings continue to check it from the Power Plug. Most cases the problem is only in Power cord .
Posted on Jun 01, 2009
Before checking the motor i would check the cord...
then check the switch
or at the switch i would disconnect the load side and jump it bypassing the switch(carefully)
if the brushes and the armature look good..check to see if the spring around the brush holder isnt burnt or cut...
last i would do a resistance check through the field windings...
Posted on Oct 02, 2009
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Posted on Jan 02, 2017
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