In this video, I repair a burnt-out DeWalt cordless hammer drill by replacing the internal motor instead of buying a new tool.
After years of heavy use drilling through thick stone walls, the drill finally failed. Rather than spending €100+ on a replacement, I bought a new motor for around €30 and fitted it myself in under an hour.
I show the full step-by-step process, including opening the casing, removing the old motor, fitting the replacement, reassembling the drill, and testing all functions.
🔧 What This Video Covers:
• Diagnosing a failed DeWalt cordless drill • Opening the drill casing • Removing and replacing the motor • Reassembly tips • Testing forward/reverse, torque, drill & hammer modes • Saving money by repairing tools instead of replacing them
This is a simple DIY tool repair that most people can do with basic tools, even if you’ve never opened a power tool before.
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AI Generated·May contain errors
Welcome back to the Finko everyone. I'm in the workshop, the door's shut, it's blowing an absolute gale.
I can't get anything done on the outside of that that I want to do, but I am making good use of
the time. I've got here a DeWalt cordless hammer drill which I have used and abused.
It stopped working, that's all it does and you can stop it with your hands very easily.
I've used it for way more than it's designed for drilling through two foot thick stone walls
with very big bits as well. It's done a superb job but I've burnt it out, I've pushed it past
its limits so today I'm going to fix it. What we've got, rather than spending a hundred odd
euros on a new drill, I've bought a new replacement motor for it. As you can see that
the light's all right here, I've got the big light on but the door's shut as I say which is a very
rare occurrence. This is the new motor, I'm trying to do it so you can see it. So what we need to do
is open up the case, it's a Torx T10 which I've got there, a little driver and there's
how many screws are there? One, two, three, four, five, six and I think two in the front, seven,
eight, four in the front, nine, ten. All you need to do is take all them out, start with the ones
in the front and then just undo them all basically. I think they're all the same length but we'll find
out in a minute. Put them somewhere safe so we don't lose them. There's one, I don't want the
car seat, I'll get it done. The new motor was about 30 euros so a lot cheaper than buying a new one.
We like to fix things if we can, save ourselves a lot of money on buying new tools.
I think the worst part is taking all these screws out. So with all the screws out we need to get it
apart, just ease the chuck forward like that. I'm trying to do this so you can see and then
work it apart slowly, gently and it comes right. So there we go, you can see in there
the bit we want to change is in here. So the chuck actually comes all the way out
with the speed switch still intact, set that aside there. The bit we want to change is that bit
inside there. I'm guessing we have to take the whole lot out. So two screws on the back there
to free out the motor. Slightly thinner these but the same size head and then the whole thing
should just come out. There we go, there it is. So that's out, the bit we want is now
it's quite strong because it's magnetic and it's a motor. That comes out of there and now a new one
goes in just like that. That's it, fab. Now all we've got to do is get it back together.
So get that out of the way, I've just took that thing out so now I can use a finger in there to
hold the spring magnets apart so I can get this back in. If you can see in there, there it goes,
that's it, that's it. So that bit's complete, excellent. So you can see now the new bit's in,
nicely seated. I'm going to put my little clamp back on now, in fact you even get a new one
with the motor, it's that way. Move the camera around for you and just wiggle it
back into place, there we go. Then put the two screws back in to hold that firmly.
At this point we can actually stick the battery back on and test it. There we go,
perfect, it's working, it's going round. So now all we've got to do is get it back together.
The trickiest bit is getting the chuck in and the switch in place.
Easiest way is to stick the chuck in first and then locate this thing on there and just rotate
that round, there we go, super. Right then, back on with the case, that's it, just like that.
Make sure it all turns and everything, I'm just gripping it tight with my hands.
And then the screws go back in, so there we go, super happy there it is. It's all back together
and notes herself, don't abuse it, use it for what it's designed for. We just test everything,
so we start off, we go forward, reverse, fantastic, two speeds, one speed,
yeah, torque setting, that's a bit harder, okay, drill and then hammer.
Fabulous, excellent, that is happy, super happy days. I'm so pleased to have this working again
for me. So yeah, hope that helps, really easy to do. I'm going to say rather than spending 100 odd,
plus euros on a new drill, 30 euros online for a new motor bit, fix it yourself in about an hour
max. Even if you don't know what you're doing, working for it, I reckon it'll only take you an
hour and you've got yourself another good working drill again. So thank you so much for watching,
hope it helps and we'll see you as always on the next one.
