Question about Bosch Brute Breaker Hammer 11304
New brushes .Armature looks good . Cleaned every thing greased everything. put back together .Cleaned switch. but runs about half speed. thanx
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: miter saw motor slowing down
motor comm might be a problem.see if tha armature comm are fine.if their is gap with comm bar & discolorization with mains needs aramture etc.
Posted on Jun 01, 2008
Common faults -
1 The heating elements can fail (meaning open circuit)
2 There are cut-outs (T.O.C's) that might need resetting
3 The thermostats (stats) can trip out or burn out (meaning opencircuit)
4 Moderntumble dryers also have sensors and pcb's (Printed circuitboards) thesehave programs that can fail and circuitry although most should produce an errorcode showing you were the fault is.
5 Faultyconnections and burned wires may also be the fault.
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Posted on Jan 13, 2010
There is a thermal cutout in the motor, but unfortunately it is not resettable.
The only way to be sure if it is faulty, is to check it for continuity with a meter, if it is open circuit, it can be bypassed, but this then leaves the motor unprotected, but it will prove if the fault is in the motor, or elsewhere.
It could be a blown track on the control board caused by the brushes shorting, in addition, to an open circuit thermal cut-out.
Posted on Apr 14, 2010
Testimonial: "I had already decided to split the motor and check it out thoroughly and yes it was the thermal cut out open circuit. Fixed and all working again. Ta."
IF THERE IS BLACK DUST UNDER THE MOTOR IT IS USUALL DEAD. YOU CAN REMOVE MOTOR FROM THE BACK I HAVE DON IT. YOU NEED A METER TO CHECK THE MOTOR. I CAN HELP.
Posted on Apr 25, 2010
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