Well, I could'nt find anything on this topic in the archives so could someone please advise on the proper procedure.
What I have done is this; 1. Clean out gears and case of old grease. Compressed air helps. 2 Repack using wheel-bearing grease(from a tub). I notice that all the old tools that I have done this to only had a residue of grease around the gears and a film that was deposited on the walls of the case. I felt it best to fill the case to the brim with grease such that it oozes through the edges and screw holes on refitting.
The questions that I would apreciate an answer to are these. 1. Does common wheel-bearing grease offer enough protection to power tool gear boxes? 2. Can too much grease in the case damage the tool ( by overloading the motor)? Thanks.