Question about Dewalt DC925B Heavy Duty Xrp 18V Cordless Hammerdrill/Drill/Driver Bare Tool

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Drill doesnt work unless shaken

My drill doesnt work unless i shake it,i have replaced the brushes,but no change

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It sounds like a bad cord, or a loose electrical connection inside the handle, or the switch.

Instead of shaking the drill, try wiggling the cord where it goes into the drill handle, then wiggle it where if plugs into the wall.

If this doesn't cause the drill to run, try pressing the switch repeatedly to see if that causes it to run. If that doesn't work, it's probably a connection inside the handle.

Try these procedures and please let me know the results. We'll take it from there.



Posted on May 09, 2009

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I have the dewalt dwo56 impact driver and ive had it for a yr and i have no warranty on it ..i have a problem with the drill when i press the button for it to work it doesnt you have to shake it or tap it...

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Dec 07, 2010 | Dewalt DW056 18 Volt Cordless Impact...

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18 volt nano dc927 stalls and you have to shake

Common problem on a lot of cordless tools is the battery connections. inside the tool. They are just little springy bits of metal. In the course of normal use they can get bent out of shape and not contact the battery properly. Remember you are asking them to pass a fair bit of current to operate a low voltage device. Also the contacts both on the battery and in the tool can get dirty, and build up oxides and other deposits.
The cure.
Take out the battery . Look down inside the tool. Find the contacts. Do they stand proud of the body? Or are they flattened out?
GENTLY tease them out so they will contact the battery firmly. Use a small screwdriver or similar. You can break or damage them if you are to ham fisted with this.
Use some solvent(or contact cleaner if you are flash) and some rag to clean the contacts. I have had to use fine wet and dry sometimes to do this!! Don't forget to clean the contacts on the battery(s) as well.
Still not working?
Maybe your brushes (on the motor) are worn to the point of failure. I have not worked on this particular model of drill. But back in the day when Dewalt bought out ELU and re branded all their stuff in yellow and black casings they were one of the few manufacturers to make electric motors that were actually designed to have brushes replaced. A lot of cordless-es were made so that if you needed brushes you had to buy a motor to get them!
To change brushes you will probably have to split the drill casing. Unless you can see a couple of brush caps on the outside of the drill. They will be on the side of the casing at the back 180degrees apart. As I say i am not familiar with this particular model.
Still not working?
Could be that the switch (trigger) is starting to play up. Generally nothing you can do with these. Contact cleaner may sort it out fot a while. but there is a lot going on inside these switches. Forward reverse/ Variable speed etc. I have in the past dismantled them and cleaned/reassembled them. But it was always a **** or bust thing. Besides my eye-site was a lot better back then!
Still not working?
Chuck it away and buy a bit and brace!

Feb 16, 2010 | Dewalt Drills

1 Answer

Shake the drill to make it work

Sounds like the battery is not making a good connection inside the drill handle. Clean the contacts inside the handle where the battery plugs. Clean the contacts on the battery. If there are any springy tabs in either of these places, pry them up slightly to increase the pressure between the contacts.

Clean with wire brush, sandpaper, electrical contact cleaner.

If this doesn't work, get back to me and we'll go to the next step.


May 09, 2009 | Dewalt DC925 Cordless Drill

2 Answers


Hi hope to help
sounds like you have a problem with your brushes they may just need replacing but do not strip the drill down to do this just take out the batery then take the 4 screws from the rear off the drill and take off the cover see if the brushes are worn it doesnt take a lot of wear to be worn.
You can take off the wire from each brush unit then use a small flat screwdriver to pop out the brush unit then replace you should be able to get the brushes from any dewalt stockest.
Hope that helps. Sean

Jan 12, 2008 | Dewalt DC920KA Heavy Duty Xrp 18V Cordless...

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Shake the drill to make it work

I just replaced the switch assembly for the same problem

Jan 12, 2008 | Dewalt DC920KA Heavy Duty Xrp 18V Cordless...

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