Question about Dewalt DC927KL Heavy Duty 18 Volt Cordless Hammerdrill

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Removing the dewalt DC925 'rohm' chuck

How do you remove the DeWalt DC925 chuck? This is the new drill (not DC988) with the Rohm chuck and it doesn't apear to have a retaining screw on the inside.
Many thanks I want to remove the Rohm self tightening chuck from my new DeWalt DC927 18v lithium ion drill. But it does not have a retaining screw inside. Any ideas out there?

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  • Anonymous Mar 21, 2014

    The drills transmission needs to be reassembled.

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I have a DC927 and a DC926 that I removed 1/2" Rohm Supra SK key-less chucks on. This process is pretty simple. Put the drill motor in 1st gear. Put the clutch ring in drill mode and not in driver or hammer. Reverse or open the chuck all the way. Hold the chuck firmly in a vise and give the drill a good POP counter clockwise. The last step can also be done with a pipe wrench by placing the drill on a work bench and turning the chuck counter clockwise. Continue to un-thread until the chuck is removed. The replacement chuck must have the same mounting process and mechanism. Put a few drops of locktite on the threads and thread the replacement chuck back on. Tighten the chuck using the vise or pipe wrench. Place the short end of an allen wrench in the chuck and tighten down on it. Placing the drill on a work bench, strike the allen wrench with a mallet to finish tightening and locking down the chuck. Congratulations, you have just changed out your chuck.

Posted on Dec 10, 2009

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  • 2,176 Answers

I checked on both the models listed and apparently they don't want the user to remove. They have a special service fixture for chuck removal that lists for 72.74. I would suggest that you might take it to a authorized center or service center and ask them to do it. BUT keep in mind that you need a chuck identical in the mounting to replace it. Let me know the outcome I would be interested, Thanks

Posted on Feb 16, 2009

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Is anyone there? need Dewalt help


Here is DeWalt's marketing thing on the subject.

http://www.dewalt.com/us/cordless/powerrating/

Unit Watts out (UWO) is their rating for the (presumably sustainable)maximum power output at the chuck of the drill. You can read about it..their explanation is basically technically correct.

Yes, max torque is related. The maximum power in a permanent magnet DCmotor system occurs at half the maximum speed when the system is loadedwith half the maximum torque.

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By the way DeWalt make some bold claims about other manufacterers' drills.

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