How do I remove the wire brush form a model 9410 grinder?

In the middle of the housing set on both sides, there is a cap cover you have to pry off with a small screwdriver to get to the brush caps. Screw the brush caps off and remove the brushes (PN CB-430). If the brushes are stuck, pull on them until they come out. If the brush contacts/wires break off, you'll have to remove the armature and push the brushes through the brush holders. If the brush holders are damaged, replace the end bell, PN638448-2.

Remove the back halves of the housing (where the cord and switch are). Once you have the halves opened, you'll see the wires on the brushes going in by the motor. There are coil springs that hold them down. Take a paper clip and lift those springs up and rest it on something. (You can completely take the springs out but you don't need to.) Then slide the old brushes out. Detach the wire and replace with the new ones.

Make sure when you are reassembling the housing halves to keep the wires from being pinched.

Hello
Take a look at the brush holders and see if you spot a series of holes on the front of the holders.Push the brush back and pin the brush back with a piece of wire.There will be a way to pull the wire through a vent.You can do alternators on cars like this,just go to an alternator rebuilding shop.Brushes used to be under a dollar. Thanks for choosing FixYa.com.

unplug tool and on the backside you will find a #2 posidrive screw and remove it and pull the back section off to expose the back of the motor and what I do it move the brush spring to the side and remove the shunt and remove the brush making sure to replace the spring, after doing both slide the back housing on and replace the screw. Let me know if you need more assistance.

first unplug the tool, next on the backside you will notice a screw, remove it and slide the cover back to expose the backside of the motor. gently move the springs that hold the brushes tight to the side and remove the brushes and replace. Make sure to replace the springs and then slide the cover back into place and replace the screw and that should take care of your problem.

These are great grinders. I have two of them. One version (more expensive one) has soft start and good overload system. Other version is basic grinder. if it (popped) most likely a short in the motor. Is it possible you got an unusual amount of grinding dust into the grinder? This grinder has a safety feature on the brushes, that keeps from burning up the armature when the brushes wear out. I doubt you've worn out a set of brushes in 2 weeks, unless you've been using it non stop. At least one of the brushes has a small plastic insulating pin inside the carbon. When the brush wears down enough to expose the plastic pin, the spring loaded pops out, lifting the brush from the armature , which opens the circuit. You could remove the brush holders and inspect the brushes. If it is 2 weeks old it is under warranty, and you should return it where you bought it.

Yes and no. From 1999 to early 2008, excluding the slightly beefier "Ergo" models, the size / part number is the same. However, on the newest models there are differences in density between some models. Wire placement is different from the older models.

Unplug tool and then remove the brush caps and brushes, at the front of the tool are 4 screws that need to be removed after removing them you might have to pry the gearcase from the motor housing and then it should just pull out if there is no problems with the field having been hot and melted. Let me know if you need further assistance

If the armature is shot, it will spark a lot where the brushes are touching the armature comutator. To remove the armature:1 Remove brushes. 2 Remove 4 screws holding the gear box. 3 Pull away gear box from the body. The armature may come with the gear box or not, it's only pushed in, so you should have no problem to disassemble it. If the armature stay in the grinder, use two skrew drivers to pray it out. You may not see anythink wrong with it, but it may be no good . That's Makita special, they don't make it good as they used to. The price for new grinder is about $130, for armature $65. field $40

try checking the brushes.

to do this: remove the 2 small covers on the left and right side of the tool and push aside the coil spring holding in the brush. the brush should freely pull out of the holder.

when you have the covers off, look for charring or melting. and after the brushes are out, rotate the arbor to move the armature inside and look to make sure it's not charred.

if that doesnt help, take apart the handle and look for melted or exposed wire. dewalt likes to pack the wires in tight among the screws and sometimes the normal vibration of the tool will cause a screw to cut into a wire and short the wire.

new brushes and holders (if melted) are usually around 20 dollars US