I have a few Milwaukee cordless
Normally I just wipe them down after garage work and/or blow out accumulated dust after some of my construction jobs. Haven't re-greased one yet but I probably should consider it especially for the 2655B as it has seen the most hard use.
Of course the Milwaukee operators manual does recommend a qualified service at 6-12months depending on usage.
They also have the recommended grease type "J" available for purchase in several sizes... 2oz, 6oz, or 1lb
You didn't specify what 1/2 model it was but I assume it was the High Torque as it seems to be the most popular
Here is a link to the internals on a 2763
http://www.ereplacementparts.com/mi...th-friction-ring-parts-c-131_5120_417848.html
Most of my tools have the reg torq head screws, T20 for the big guy and T10 for all the rest of them. Strangely my 2654 impact driver has several tamper proof style screws installed. Why...dunno? Maybe just a fluke. Anybody else?
Getting water in the Milwaukee's has been known to create problems for some users most notably when cutting open plumbing with the hackzall tool. One my drills got rained on but it didn't use it until I let it dry some, I also blew it out with compressed air too.
I once had the 2763 fall from bench height onto the concrete floor nothing broke but the battery did get banged up some. It's suffered more cosmetic abuse removing a truck bumper. In retrospect the protective boots are good idea especially if you want to keep them looking pretty.
Spilled a beer on a M18 combo charger once too. Thought it gave it up lights were flashing but I took it apart and dried it out good and all is well again
The Milwaukee battery's are designed to work in below freezing temps but it is recommended they be stored at room temp. If a battery is too cold it may not take a charge right away and the charger will flash. (Same effect if its been worked and may be too hot). They say they don't take memory either so they can also be charged at any time too. All that info is in those silly manuals that normally come with the tools right?
