Question about Bosch 4000 - 07 Electric Table Saws

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My Bosch table saw motor runs but sparks are coming out the back of the motor. I replaced the bushings and that didn't help. Please advise.

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The sparks are most likely coming from the brushes and the commutator. This is an indication of either worn brushes or an armature that is failing and if used further, will burn out. First check the brushes and look at the condition of the commutator. These motors are known to be problematic.

Posted on Mar 23, 2011

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Turn unit upside down and remove the Plastic body - approx 6 screws.
Thake a digital camera and take LOTS of pictures of dissassembly as you will need them later. Blow unit clean and work neatly keeping all parts in labeled bins for reassembly. Don't attempt this job when your pressed for time.
Before you start check to see if this machine is still under warranty!!
Call customer support listed on website if you run into a problem.
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It sounds like the armature is gone, if you are lucky the field coil is ok. Pull the back of the motor off and have a look at the armature where the brushes run if it looks burned or really rough the armature is gone and must be repalced.

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finally got it. the screw is M5x0.8x8 If I have helped you with your request would you please rate this response accordingly and thank you.

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