I have no manual for my dw999k (if anyone can upload one that would be great!) I can't work out where to apply grease to this drill. My previous drill had a chamber to fill up but not this one. Amy ideas much appreciated.
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There should if available for your model type a maintenance kit neccesary for your model or all the used o-rings and sometimes special tools because there are special buna-n or nbr o-rings used sometimes braun or green colored on some parts and gaskets, seals and rings used and allways if your tool is leaking then replace the impact bold in front of the spindle if you have find the right drawing for your model type
The right lubrication is very important in combination of the o-rings because of the heat building release by rotating and hammering and a leaking tool has oft made all o-rings hardenet because of the failed pneumatic working loose of lubrication dried out principal it becomes very dry internal on some places and much to hot .
There is supposed to be grease on the chuck end of SDS+ and SDS Max bits. Actually, you should put a little lightweight grease on the end of the bit every time you put one in your drill. If you, or noone who has ever used the drill, have ever done this, it is possible internal grease is leaking out of the drill and it should not. There are seals to prevent internal grease from getting out of the transmission and striker mechanisms. If you are loosing internal grease, these seals should be checked.
It works on a pnumatic system, Light oil or grease is fine on the piston its self but grease in the gearbox. (don't over do it) Have the piston partially sticking out. Make sure you locate it onto the ecentric cam correctly. If it does not hammer at first just run it for a while against the work, stopping and starting it in short bursts.
sometimes I have had to use an impact tool to shock the screw loose, what you might try is to tighten the chuck more and then remove. there is no locking mechanism that I know about. also I would recommend going to Dewaltservicenet.com and downloading a manual/breakdown for this before starting.
grease, I would recommend going to Makitatools.com and typing in your model number so you can download an operators manual and it also discusses the lubrication for the tool. Let me know and if I have helped you with your request would you please rate this response accordingly and thank you.
They are filled with a special grease that comes from Bosch. It sounds like the impact bolt or the striker pin in the unit are not moving the way they should. These are the pieces that work together to create the hitting action. About all that can be done now is the unit has to be dismantled to get those to pieces moving again. Bosch makes what they call service packs for all thier hammers. They have all the o-rings and grease to get your hammer working again. A Bosch service center can supply you with the kit. Ask for P/N 1617000225, or they can take care of it for you.
Hope this helps