Question about Saws
Have got them exposed at motor but cant shift them
They may be burnt and jammed - carefully break them into pieces with a screwdriver (being careful not to damage the brass brush tubes or the copper armature at the end) using compressed air, blow the pieces out and clean the tubes.
Use a flashlight to look down the tubes and inspect the armature as well - if the brushes are burnt into the tubes there may also be damage to the armature.
Posted on Feb 07, 2015
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Posted on Jan 02, 2017
SOURCE: Bosch 4000 table saw won't work
OK sounds like you are handy. You have electric to the brush tubes? (first unplug saw to test) If yes then I would remove the brushes to see if they were making contact with the commutator. Does the blade spin freely? If not you might have a bearing problem. I would again use air after removing the brushes and then reinsert making sure they seat on the armature. If still nothing then if you are comfortable I would pull the motor housing. But before pulling go to Bosch Tools website and downloading a breakdown of your saw. Let me know if I can help
Posted on Jan 15, 2009
Ok, the motor turns, but throws sparks on the brushes. This is normal to an extent for universal motors used on that type of equipment.
Try reassembling the saw, and put a blade on it, then try it. If it runs, try cutting a piece of scrap 1x, both crosscut & rip. If the motor can't hold the load, you may still have to replace it.
Posted on Apr 18, 2009
You can try Sears but they can be a bit pricey. I use to send out motors for a factory I worked in to a rebuilder who would even do new windings. Check in your area for a rebuilder, As for the replacement being a Sears unit they may have a similar motor in stock. Good luck.
Posted on May 08, 2009
SOURCE: Bosch 4000 table saw disassembly
turn the motor housing slightly until you can put a screwdriver between the housing and diaphragm, pull on the one side and push with the driver and it will come apart, I just did one yesterday. To get the armature out of the fan bearing you will need a dead blow hammer to tap on the diaphragm while pulling on the armature. The bearing is held in place with 2 screws, hope this helps.
Posted on Aug 18, 2009
Testimonial: "Hey thanks! It seems they really don't want you to work on the motor on this particular saw. Thanks again for your help. "
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