Question about Bosch HCBG500, 5 Pc Industrial Hammer Drill Bit Set

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Sander runs up to speed ok ,but any load applied to disc and it slows down to a stop ,plenty of speed but no torque .tried new brushes ,but this had no effect.

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  • Steve Allison
    Steve Allison May 11, 2010

    What model is your sander?

    I guessed at '500' but there does not seem to be such a model.

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  • 26 Answers

I suspected burnt armature...

Posted on Aug 05, 2009

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The Drill has little to moderate use over the last 25 years just developed a problem:


Check the carbon brushes on the back of the motor. It sounds like they are worn or the spring that holds them against the commutator is broken.

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I own a DC988 XRP drill. I recently used it for drilling some holes. While drilling I heard a pop and now the drill only spins at a slow speed. Any advice as to what component needs replacing? Brushe


That drill had several speed options, do you have it on high?

Brushes are usually a power/torque issue and wouldn't effect speed unless they were really bad

Nov 29, 2014 | Drills & Drill/Drivers

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Rotation speed slow down


Sounds like a battery problem. Try getting a new or better yet a rebuilt battery for it and see if the speed doesn't come back. Your battery maybe worm out and unable to give the same power it did when it was new.

Oct 04, 2013 | Hitachi Drills & Drill/Drivers

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My drill stopped running, the battery is charged,but wont turn. started only working in certain positions then quit alltogether


It sounds like the switch but check the brushes on the motor and the connections from the switch to the motor.

May 31, 2012 | RTO Drills & Drill/Drivers

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I have craftsmen 19.2 volt tools while using the electric sander my batteries have died and when i put them in the charger the green indicator light comes on saying they are fully charged , when in reality...


It sounds like your charger is faulty. Try to measure the voltage of the batteries. If the nominal (workingh voltage of the batteries are 19,2 volt, then they should invrease to about 22 volt while in the charger. If the voltage does shoot up when the charger is on, maybe even to 25 volts, (which should turn the green light on) the new battries are dead!
It happens!
The other possibility is that the batteries are OK & fully charged!
But!
Your sander is damaged. Again, try & measure the voltage in the sander, before & after you switch it on. A large drpop in voltasge can indicate the sander drawing too much current. Also try them in another machine if you can.
Andy

Sep 03, 2011 | Craftsman 19.2v 3/8"drill/driver W/ Work...

1 Answer

Drill was working one minute went to change bit after i did this it would not work


Probably a trigger switch, if you wiggle the switch will it power up?

Also if your drilling alot and it slows down and won't restart it could be the motor's brushes.

Cheers

Jan 05, 2010 | Makita 6402 3/8" Drill, 5.2 AMP, 0 - 1,200...

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Xrp 18v dewalt drill worked fine with plenty of juice in battery and suddenly stopped working. What could be wrong with it?


if your batts are ok and the batt connection terminals look ok you may have either faulty switch burnt off wire at brushholder or reqire new brushes

Nov 10, 2009 | Dewalt DC988ka 18 - volt XRP 1/2''...

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The electronic brake on my drill stopped working.


could just be the switch. while you have it apart I would check the condition of the motor brushes. The switch is around 40.00. Let me know if you need more help

Sep 29, 2009 | Panasonic 15.6v Ni-mh Cordless Drill -...

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Drill stop working after drilling hole in concrete. I can see smoke coming from drill. Now both forward and reverse does not work any more. Is the drill motor burnt out? Or is there a fuse that I can...


With the DeWalt cordless drills, the weak link is that the leads tend to burn (melt) off at the motor brushes when the drill is overloaded. It's happened to mine now about 3-4 times, so much so I've had to replace the wires after they got too short to put a new terminal back on them!

The only other issue is that the trigger mechanism could have failed due to the hevy load of drilling in concrete. But before you spend the bucks on that, you can easily check to see if it's the wiring or the trigger assembly.

Before you take anything apart, make sure the top speed selector is at #1, and the torque setting set to the lowest setting. (makes it easier to remember if you have the speed selector come out of the drill body)

Now lay the drill on it's side and with the battery out of the tool, remove all the screws that hold the two halves together. Take off the top half and look at the back end of the tool to see if the wires going to the motor are in good condition and not burned off the motor brush tabs. If they are, you can either resolder them or recrimp them (DeWalt used different methods for different models) with a new .25 female terminal (any auto or hardware store will have them)

You can give the repair a quick check (IF you are careful) by putting in the battery into the lower drill body and holding the drill motor, gently squeeze the trigger and see if the tool runs. If so, you've fixed it and can put the drill back together.

If the wires are good, then it's the trigger assembly and you'll have to get one from either a DeWalt Authorized service center or distributor that carries repair parts, as these are sealed units and can't be fixed (I've tried). There are some available online too, if you wish to do the replacement yourself, which is a straight forward unplug and plug operation, now that the tool is apart.

Reassemble, making sure the speed selector is in the slots on the tool body and everything else lines up correctly. Install the screws and you're back in business.

Hope you find this very helpful and best regards!

Aug 17, 2009 | Dewalt 18 Volt Compact Drill Kit

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