Question about Hitachi NV45AB2S Coil Roofing Nailer

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Hitachi cordless drill, removing chuck

I have a Hitachi DS18 DVB cordless drill and the chuck started to lock up.It's very hard to turn it to loosen or to tighten the chuck. It looks like it will require two very thin wrenches to remove it but I'm not sure and would appreciate any help out there.

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  • cressg Dec 16, 2008

    Thanks for the info about the screw inside the chuck. Apparently the screw had come loose and was binding up the forward and reverse movement. After I was able to get to the screw all it needed was to be tightened. Thanks , my drill works again.

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  • Hitachi Master
  • 1,383 Answers

Replacing the chuck on a drill is simple when you know the trick. I worked at a tool rental center while attending college and learned how to repair many tools. Open the chuck enough to remove the screw that you will see inside the chuck. It will most likely be reverse thread. The chuck is threaded on the shaft so just simply close the chuck on an allen socket and impact off with air or electric impact tool. If you do not have an impact tool close the chuck on-to the largest allen wrench that will fit into the chuck.(with the long part of the allen wrench projecting out) You will need to set the drill into a vise or strap to work-bench, then strike allen with hammer. Most chucks are removed with one quick impact of the hammer, counter clockwise. Do not squeese the drill too tightly with vise, we used a piece of leather to protect the drill. Good luck. Enjoy

Posted on Dec 16, 2008

  • Gerry Tseng Jan 07, 2011

    perfect advice. worked like a charm for removing the chuck on my Hitachi D13Y right-angle drill. at first I tried the 2nd suggestion but didn't get anywhere as I couldn't keep the drill from spinning, so went the impact wrench method and it came right off!

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Posted on Jan 02, 2017

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