Question about Rotary Drills
I plan to replace the chuck with one from a PSB650 RE (or buy a new one from Bosch if necessary) however there isn't a locking screw inside the chuck.
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Posted on Jan 02, 2017
I can't find that model number in their database but I would guess that the chuck that is on it now is for a non-reversing tool and therefore would not have the hole for the chuck retaining screw. As long as the threads are the same I don't see a problem putting it on. Let me know if I can help further. Dave
Posted on Dec 24, 2008
There are one-way (non-reversible) and two-way (reversible) drills. Mine is one-way. Methods for chuck removal are different for these two types.
Procedure for one-way (non-reversible) drills:
Drills of this type have no chuck screw, so one have to hold the spindle with a wrench, than to sharply strike the wrench with a hammer to spin it off.
Procedure for two-way (reversible) drills:
Open the chuck up and in the bottom is a screw that holds the chuck on the shaft.The screw turns in a clock wise motion to be removed and then you can top the chuck off the shaft.
Posted on May 20, 2009
There is suppose to be a flat head Left hand thread chuck screw in there. It may have fallen out. You will not be able to put the jaws back into the chuck. You will have to replace the chuck with a new one. If you make sure that the chuck screw is not there you can remove the chuck with a couple of steps. Make sure the drill is in it's lowest gear. Use a strap wrench or some large vise grips on the chuck. If there is still one jaw in the chuck make sure it is all the way open and locking the collar to the chuck. The chuck will come off in the regular lefty loosey configuration. It may be stubborn. If this is the case, You may have to cut the collar off the chuck and use a pipe wrench. Or bring it to a professional to get it changed out.
Posted on Sep 23, 2009
your pin under the selector switch my have broken off. also the hammer rod could have broken too. if its drilling and not hammering that more likely. you may be under warranty call bosch or log on and go to dealer locator's for the closes dealer to you. hope this helped
Posted on Oct 15, 2009
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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