My drill chuck will work some then lock up until it s jarred lose may work a minute or two before locking back up.
Response #2 Posted By Handy Dan
Greg, before you do anything else, look further on this forum to Alberto's letter. Sounds very much like his as well as my same symptoms. Try the suggestion I gave to him and I feel confident you will have satisfying results.
Good luck with your drill!
Handy Dan
change chuck Question by Rafael
I was trying to change the chuck on my drill. But the spindle assembly came off I was wondering if I need a special tool to take the chuck off from the spindle assembly ?
It's definitely unusual to have the spindle assembly come off when you're changing a chuck. That spindle is buried pretty deep inside the tool. As far as the chuck removal goes, you can read the post below by MikeF, or visit our chuck removal page here:
You shouldn't need any special tools to remove the chuck.
DC988 triger or motor? Question by Alberto
My drill isn't working right. I push the trigger and works intermittently and I have to push it several times before it starts working. The motor makes some noise like it wants to start so I am not sure if the problem is the trigger or the motor. Hope someone could give me some advice. Thanks.
Hi Alberto, Intermittent electrical problems with a tool can be very difficult to diagnose. The first thing I would do is remove the motor brushes and inspect them. Sometimes dirt or other debris will get into the brush holder causing the brush to jamb and loose contact with the armature. Make sure that the brush can move freely inside of the brush holder. If all looks good with the brushes then it is most likely the switch that has gone bad and will need replacing. The switch is part #152274-22 and is available from http://www.ereplacementparts.com Hope this helps you to repair your cordless drill! -Mark
Response #2 Posted By Handy Dan
Alberto, Be sure to remove the battery first. You should start by checking the brushes and commutator. To do this, you must use a Torx driver bit to remove the 4 screws at the back end of the drill motor cover and take off the cover. This will expose the brush assembly. Locate the wires that go to each brush assembly,attached by a spade connector. Carefully pull out the connector from each brush holder. Next, you must gently, but firmly pry straight out on the brush holder assembly ( 90 degrees to the motor shaft!) to slide it out. Not just the brush, but the assembly holding the brush. If the brush will extend at least 1/4 of an inch out of the holder, it will last a pretty long time. If not, you need to purchase new brush assemblies. Next step, and probably the most important, is to clean the commutator. (The part of the motor that the brush slides on.) Some VERY FINE sand paper or nail emory board will work. You will need to cut a strip only about as wide as the brush and try to gently buff the commutator until it is a nice bright brass color all the way around. Really, this is the most important step. Probably the main cause of your problem.
Put it all back together and try it out. I just did this on mine and completely solved the exact same symptoms you described.
Good luck. You should have no problems!
Handy Dan
The chuck replacement process is relatively simple. We have a full walkthrough on our site (including a video) that applies to most keyless chucks. You'll want to check the "Threaded-on" section of our article here:
You'll need to start by removing the chuck screw, which is left-handed (meaning you'll have to turn it clockwise to loosen it), then put the biggest allen wrench you can fit into chuck. Tighten the chuck around the allen wrench, and secure the drill (preferably in a vise) before hitting that allen wrench (counter-clockwise) with a hammer a few times to get it loose. After that, you should be able to get the chuck off by hand.
Putting a new chuck back on is basically the same process in reverse. The whole thing should (hopefully) take no more than a few minutes.
Our article may have some details I may have missed, and the video has been pretty helpful to a lot of people, so I'd still recommend referring to it before starting this project.
Power Tool Repair Forum
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My reliable DeWalt DC988 finally died on me. I ordered new brushes. I removed the old ones.
I'm sure this is a dumb question but how exactly do the new brushes fit in. I am having a problem getting them to set properly. It seems like the slot that slides in to securely seat the brushes is not aligning properly or fully seating. My first time at this so any assistance much appreciated.
I have a Dewalt DC988 drill that throws sparks and occasionally smoke out of the vents on the back. Good burning smell too.
Brushes looked ok, but I replaced them anyway (only $4/brush).
It still does the same thing.
Wondering whether I should try replacing the motor or what?
Motor costs about $40 on ereplacement.
Any suggestions greatly appreciated.
Cheers,
Chris...
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