05-23-2003, 03:56 PM

NEVER use any kind of lubricant on the path that the coins go through. Just about any kind of lubricant will pick up dirt or lint very quickly and make a mess over time. This comment comes from 30 plus years(damn, that much?) experience in the coin vending business, of some kind or other. You can use silicon, such as WD-40, to clean the path way but then you have to remove all of the silicon. The best way to clean the coin paths is with warm, soapy water and a tooth brush. If there is any question of any residue being left on the coin mech, use alcohol to clean off that residue. Alcohol evaporates quickly and won't leave any residue behind.
If the mech is clean to the eye, and no residue can be felt with the fingers, go after some sort of alignment problem. See Kitty's post below. I've also had some mechs that didn't seat correctly in the machine, causing them to not be aligned correctly in a vertical position. Hence, gravity wouldn't make the coin drop.