Question about Hitachi DH18DLP4 18V Li-Ion 2-Mode SDS Rotary Hammer

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I have a battery powered ads drill similar to the drill in the picture it started to smoke and got very hot while drilling a hole now it doesn't work any ideas what the problem is

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Could one of 2 areas. First I would think the motor is burnt and second the switch. you can go to hitachipowertools.com and download a tool schematic for this by entering the model number DH18DL and then scroll about 1/2 way down the page and on the left hand side there is a link to view the parts list and to show you how to disassemble this. If you need more assistance please let me know.

Posted on Mar 24, 2011

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Posted on Jan 02, 2017

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The only way to tell if you can fix it is to take the drill apart...
Look for two wires melted together...my guess is that they got too hot and melted together inside the drill... separate and insulate and you should be fine...


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I have an 18volt Dewalt XRP 1/2 inch drill. The drill has been working perfectly up until this morning when I took it froms its case. I was using it the evening before to screw in some 2 inch screws into...


Check electrical contacts in drill body where battery connects. Check wiring inside the drill, trigger and check also brushes. You do not have to invest 329, you can buy "body only" machine for few bucks and reuse your charger and battery packs. Juraj

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Using drill battery started getting extremly hot/ removed and it continued to get hot and started smoking. Put second battery in drill and same thing happened again. Whats Up?


the drill apparently has created a short in the battery contacts. Look at the contacts and then the switch contacts, there might be a wire going to ground against the motor or the switch has shorted creating this problem.

Dec 22, 2009 | Dewalt DC920KA Heavy Duty Xrp 18V Cordless...

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Drill stopped work ing when hot. One drill we bought stopped after 10 6mm holes. The others work when you pull the trigger and then sometime they don't.


Sounds like a burned out motor.

Sometimes you can replace the brushes and make them work again.

When operating that drill, make sure that you are not overheating the motor.

Depending on the material that you are drilling, you may need to use the drill on a slower speed in order to not overheat the motor.

Another way is to have more than one drill, and switch to a cool one as soon as you notice heat on the in-use drill.

If your drill is battery powered, stop using the drill and change the battery as soon as the battery dies enough to slow the speed of the drill.

Operating the drill under reduced power is very hard on the motor for several reasons.

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How to apply an electric drill? how to used the electric drill?


Hi there,

Please follow the below steps to use a electric drill -

1. Determine which electric drill is best for you, the cord or cordless. The electric drill that has a cord attached needs to have an outlet which might limit you according to what job you are doing. The cordless drill is limitless and can be used anywhere without needing an outlet. Corded drills can be more powerful, where cordless drills are limited to power and can sometimes be a bit bulky.

2. Consider most of the jobs you may use an electric drill for. If you have a lot of heavy-duty projects ahead, you might want to purchase a more powerful drill. They run slower but have the power behind them to get the job done efficiently. The more powerful drills usually have a cord attached to them. If you have a lot of lightweight jobs to use a drill for, then a cordless one may be your best selection.

3. Arrange the work to be drilled either straight ahead of you or down below you. These are the two safest ways to use a drill. The drill is also more secure and won't waver while using it. If the material you are drilling is a hard or thick material, use a hole punch to start the hole before you drill.

4. Push the drill slightly as you are drilling to give a bit of added force. Start out slowly, and as the hole progresses, increase the speed slightly.

Tip -
Secure your work before drilling by using clamps. The more powerful the drill, the slower it drills. The less powerful the drill, the faster it drills.

Warning -
If you are using a cordless drill, charge the power pack before starting a job. Keep the air vents on the drill clean, and clear of any debris so the drill does not overheat.

Good Luck!!

Thanks

Sep 29, 2009 | Black & Decker Grinders

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Dewalt cordless drill


You have burned out the drill motor, it is shorted, the battery smoked due to a direct short, one thing I don't understand why the thermal limiter didn't trip in battery pack, I would contact manufacturer and try to get hem to buy you a new drill.

Aug 28, 2008 | Dewalt DC920KA Heavy Duty Xrp 18V Cordless...

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Gets very hot and smokes


cooling holes blocked
drill is being used at too hi a pressure, so the bit does not clear debris fast enough,
bit is blunt, even diamond drills blunt
the objuect being drilled is a composite, and some part of the composite is flammable
using a steel twist bit where a carbide impact bit should be used

not solution just some things to check

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