Any tips on how to remove the chuck from a Hitachi DS14DMR cordless drill. I am trying to access a seized clutch assembly! I have removed the internal screw but don't know whether the chuck is screwed off or knocked off?
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If the chuck is too tight to get the bit out you can either put a glove on one hand grab the chuck and run the drill in the reverse direction or if that will not work use vise grips or a small pipe wrench on the chuck to loosen it but be sure to tape the pipe wrench or vise grips with a thin piece of duct tape so you don't gouge the drill chuck.
Here is the parts diagram. I hate to say it but I always have problems getting the chuck out of the clutch/transmission without breaking something. I havent figured out how to keep the spindle from moving while I try to turn the chuck. Sorry if this doesnt help much.
The screw mentioned in solution number one is a left hand thread once you have removed it use an allen hey in the hole the screw came out of as if undoing a normal right hand thread a scarp blow with a hammer may be neccesary. then do the opposite when installing new chuck
usually you would remove the chuck first under my name in the profile section is the tip for chuck removal, it is a standard thread probably 1/2-13. As far as the gears go try the site Milwaukeetool.com and type in your model number for a parts explosion. Let me know if I can help further
Mine is slipping in one of the ratios because the plastic molded teeth in the gear housing have stripped out. The chuck still turns but no matter how tight the clutch is it still slips because the whole gear assembly is spinning in the housing. The part is No. 18 on the exploded parts diagram and is relatively cheap to buy if you want to fix it yourself. Also the gear selector switch may have a build up in the slot in the casing that stops it clicking into position. Good luck.
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
I just changed the chuck on my 18 volt xrp half inch hammer drill,yes first you must remove the torx screw with #15 torx bit,note this is a left handed thread screw,knowing the bad chuck was bad I added some heat from a propane torch to the chuck then making sure it was in 1st gear i took some vise grips and the chuck is screwed on with normal right handed threads,it broke loose (was stubborn but needs a lot of torque )ahhhhhh wat a pain.
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