These are known for the spring in the nose (#12) to fail.
Using an o-ring pick or small screwdriver remove the hog ring on the end of the bit holder (#17).
Slide the washer, spring, and sleeve off (Be careful not to lose the small lock ball)
The spring that pushes the lock ball forward (#12) is usually the culprit.
Reassemble in reverse order DeWALT DCF886D2 20V Impact Driver Parts
SOURCE: 02-03-09 Tues. 9:30am CST Hi
its supposed to impact immediately that is what gives the tool its power. once you get used to it you will use it for everything its lighter and more powerfull than the drill. just dont use spade bits in it or it will shatter them. try to buy tips that are impact ready
SOURCE: tired old Dewalt dw056 impact driver
It's not a simple project, and should only be done by someone who is an electrical technician. But, you can save money by repairing your old battery pack yourself.
If you look at the battery pack it might be screwed together (my 18 volt impact driver is). Inside you will find a series of batteries linked together by tabs. You can go to Ebay and find a supplier of these batteries. After your batteries come, you can replace the batteries in the same configuration as they were before. Dispose of your old batteries in a manner suitable for hazardous materials.
This process will cost you less than buying a new battery pack.
You can also do this with computer batteries. I found one of my computers only had two dead batteries out of eight. The cost to replace them was about $15, a lot less than a replacement battery for around $100. Just make sure you use the same batteries to replace the others, and use all other precautions. Again, don't do this if you are not an electrical technician.
SOURCE: Impact not working correctly
The pinion on front of motor is slipping on motor shaft. It seems to be just a press fit. Seems like a flaw in design. I had same problem. I took the dw056 apart and took pinion off motor and pressed groves into motor shaft with side cutter pliers. then pounded pinion back onto motor shaft. We will see how long this lasts the motor shaft is a softer metal. I feel the motor shaft should be hardened steel like the pinion and have a shear pin or some sort of spline to attach to pinion. Would like Dewalt to offer fix for this as I only used dw056 a couple of times before I had problem.
SOURCE: have an older dewalt impact
You're looking for part number 152274-25. If you type "dewalt 152274" into your search engine, several dealers selling this switch will come up.
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