Thank you so much for this video! You've saved me many more hours of trying to piece this back together. Curiosity got the better of me and I removed the locking pin (I saw the slot so figured 'well they clearly want you to be able to take it out, maybe it's a stand or something...', not thinking the entire gearbox would detach, and more components would fall out the more I fiddled with it! From the other comments it's clear your hope that someone would find your video helpful has been fulfilled many times over, even years after you first posted it :) I hope you've benefited from another Internet stranger's help in return!
Thank you, I had already finished replacing my Black&Decker 9019's batteries and while assembling it held the gearbox in an wrong angle so that it spilled its guts. I wasn't sure at all about the pins positions and then went looking if by chance someone documented the disassembly, but my hopes were low. Kudos to you for creating this video 28 years after the screwdriver was built!
Thanks very much for a great video. My children bought me this screwdriver about 30 years ago so sentimental value is high! I always leave it on charge and the batteries have only just cried enough! I decided to solder in some new batteries and the motor works great but on reassembling I couldn't quite get the housing s to go far enough to refit the pins. On stripping i found the six rollers in the bottom and couldn't work out what they did or where they went. So grateful!
This is a real life saver. I've got a black n decker BDCS36F screw driver and i had to replace the chuck. I went around the world (metaphorically speaking) and i didn't find a demonstration as detailed as this one. I really appreciate putting the video online. It really helped me a lot.
Thanks for the reassembly procedure. I carefully took everything apart to replace the NiCd batteries with a couple of Lithium types for longer endurance and get away from NiCd's only to find when I reassembled the gearbox was extremely clunky. Pulling the gearbox off the handle and everything fell apart. I have now followed your video and put it all back together again and it sounds a lot smoother now.
Thank you!! Accidently pulled one apart and when i triedputting it back together I was confused by the 6 smaller pins, after while I presumed that is where they go but I couldn't fit 2 of them in easily so I guess I'll have to persuade them haha. Thank you again for this video!
Thanks for showing and explaining the gearbox - it allowed me to fix a similar, but different, screwdriver which had "blown apart" after falling from the edge of the roof... With your example I was able to figure which little bit went where....
Thank you very much for running through the rebuild. I was struggling with replacing the pins, and you showed how to do it the easy way. Mind you, I have managed to lose one of the 6 xxx little pins! Has anyone got any spares? I also appreciated your strip down and replacement battery video. I have opted for a Lithium 18650 rechargeable in a 18650 cradle which had tails provided. My interim solution is to solder them onto the original female spades. Being American the spades are 1/8" and I have just ordered a few crimp spades; when they turn up I will do it properly. Thanks again for giving me the confidence on the gearbox.
Glad you got it back together. If you have a lathe then you could make a new pin, I'd have thought. I'm not sure if they are hardened, they might be, but I don't think that would matter too much. I'll have a look and see what size they are and see if I can make one. I'm still using mine, they are still useful.
@@menadue At the age of 72, I increasingly want, both economically and philosophically, to keep what I got running, rather than dump it, and start again! I have two 9019s, and I'm about to put the Lithium 18650 into the other one. I will now make a better job of it, having learnt from the first! I only messed up the gearbox because of my grunt in pulling the box away from the motor. Yes, I followed your advice about pointing downwards, but it still fell apart with the force I exerted! I have replaced the two front securing pins with bolts 2.5mm x 35mm for ease of stripdown. The Lithium battery means the rear self tapper and the plastic fitting tubes have had to go, and be replaced by a cable tie for the clamshell. No, I don't have a lathe, but I do have a vernier, and I measure the diameter of the pin at 0.1245" or 3.17mm. I doubt the diameter is critical. So having lost one pin, I have kept its brother out, and the gearbox works reluctantly on 4 pins. If you come up with a solution, I will be very grateful. Meantime, the Lithium battery is great; I'm not sure whether charging will be possible in the cradle and original BD charger, or whether I will need to remove and charge in a little USB Lithium charger I now have.
Meant to ask about lubrication of the box. A squirt of silicon grease, or even the dreaded WD40? I've learnt not to use WD40 on car or Yale type locks!
Thanks for this video as I was having problems fitting the roller bearings after the gearbox fell to bits when removed to replace the batteries in the body. This video saved me a lot of time and not to mention much frustration. Could you advise as to the length of time you charged the new batteries for when you have replaced them . There is a charge in the new ones but I am not sure how much. Again many thanks for the battery replacement and this video . You motivated me to fix my KC1909it rather than bin it.
After I replace the batteries I just put them in the charger cradle and charge for a few hours now and again. I don't do a 'new battery charge', but this may have impacted the life of my batteries as I have to change them now and again. It is years between changes though. I really should look at the manual if I can find one.
