Drill wont run. Changed brushes still nothing.

Ok about changing the brushes but have you searched if the place where the brushes are located allow the brushes to move forward freely or they are in a way were narrowed so that the brushes can only move for few millimeters?

That's seems to be elementary problem but what do I know. I bought one at an auction that didn't run. When I got so far I checked the brushes. One of them got sucked into the drill. I did get some pieces out but the brush is still in there. I trying to get the back cover off but need an impact driver for one of the bolts. I know this doesn't help you at all but if I get it straightened out I'm get back on this site. Have a great day.

Have you replaced the brushes?

it depend of model,some tools have auto shutdown brush,when brush are worn,the tool stop
when the wire is veritical:1/4" long
when the wire is horizontal,the brush can be shorter
in all case,when spark are bigger on armature comutator and brush are short, it is the time to change on your tool

First before you open the tool ground yourself. The switch is probably static sensitive. Now open the tool and check for wires that may have come loose from the switch, or motor brush area. If no bad wires make sure the switch terminals are ok (not broken or bent and are tight enough to make contact with the batery terminals). Next check the brushes and make sure they move freely in the brush holders. You didn't state the model so it may not have brushes you can access. If all that is good disconnect the motor from the switch and secure the motor in a vise. Take wires with alligator clips and connect the battery directly to the motor for just a second to see if it runs. If the motor runs you have a bad switch assuming your battery is charged.

I suggest that you check the brushes, and the armature. Worn out brushes sometimes cause that condition.

Also, try different trigger settings, to eliminate that as an issue.

Time to crack it open and have a look at the brushes at the back of the motor, they may be worn down to nothing or contaminated with something that spilled on the drill.

I would contact the nearest service center and buy some new brushes for they are very inexpensive.

Cheers,

Kevin

They all do that a bit. The sparks when starting up and stopping are normal. If it has been used alot brushes may be a good idea but before they need to be changed it will spark quite a bit.

It will not hurt to inspect the amount of brush material remaining.

there are no replacement brushes for this motor, it comes as a component part and runs around 48.00 for the complete motor. Give me the model number and I will get a motor number for you. I repair these everyday and replacing it is easy just keep in mind the wiring on the switch, it is polarity sensitive.

I got my brushes spinning by moving them while the unit was running. For mine it seems that they got stuck from sitting. The brushes move from the air driven motor unit. This works from the vacumm that is being put through the machine. I just spun the brushes while the unit was turned on. Don't get your fingers caught.