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Re: Chuck broke on my hammer drill
To take a chuck off of your drill open it up all the way. Inside there's a screw that you have to take out. It has to be turned clockwise to get it out. You may need to struggle with it a bit because it's usually really on there tight. Some folks even use a second drill to loosen it up and that's a really good idea if you have access to one. Once you get the stubborn little screw out, put an Allen wrench in the spot where the bit would fit in. If you can't turn it--and you probably won't be able to--then try using a rubber mallet to (gently) hit the arm of the Allen wrench to get it to turn. Then you should be able to just take it out. Put the new chuck into the drill. Add a few twists of the Allen wrench in the opposite direction. Tighten it up good. Put the screw back in place and also tighten that up good. The drill has a lot of vibration and if these aren't tight, it'll cause problems down the road. Your drill, expertly fitted with your brand new chuck, should now be good to go.
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Can not see what model you have. Is it a keyless chuck or an SDS chuck? With a keyless chuck hold the machine in a vice by the drill bit. now tap the chuck with a hammer or pin punch & hammer. DONOT hit the chuck on the jaws gut on the rim around them. I have had success using this method. If it is an SDS type chuck pull the chuck cap up as far as possible along the bit them if there are any ring springs you will have to try remove them then slide the sleeve up the bit, now you should be able to remove any steel balls. If the bit does not come out now hold bit in vice as before and tap on tool holder.
Yup, that is what happens. You can lessen that by really cranking it down, but it is an issue with most hand tightened chucks, and does not indicate a mechanical failure. I sometimes miss my old, heavy Milwaukee wrist-breaker with the keyed chuck. If it is just too much to live with, you could get a drill with the click in hex chuck or put a Jacobs keyed chuck on your hammer drill.
Anyway, I hear where you are coming from and share your frustration.
Open the jaws of the chuck all the way open. Inside the chuck you will see a slotted screw. Use a large flat head screw driver and remove screw. It will have left handed threads.
After you remove the screw put the end of the chuck in a vise where the 6 flats sides are. Put the drill in low gear and reverse. Hold tight and turn on the drill. This should run the chuck right off the spindle.
Hi. open the chuck to the max. inside the chuck you will see a screw. remove it. put the drill in reverse. hold the chuck. a vice may be needed. pull the trigger. this may work, however in my experience, they are very tricky to get off. I have never had a faulty chuck but have had many faulty gearboxes. i have had to buy ney chuck to fit with the new gearboxes because i couldn't get the good chuck of the damaged gear box. good luck.
When you buy a replacement chuck it will have detailed instructions- at least Jacob's brand chucks do. Basically there is a retaining screw inside the chuck that needs to come out first- it may be left-hand threads . Then you put the short end of a 1/4" or larger allen wrench in the chuck and close it tightly. Set the drill on a bench with the chuck off of the bench and strike the allen wrench with a mallet in a counterclockwise direction. Do this several times, then you'll be able to spin the chuck off by hand. Reverse the process to install the new chuck.
The only way is with a special chuk key , and is not available to customers, if you still want to replace by yourself, you can by the whole gear case cover assemble that cames with the new chuck, but is is expensive.