Quoted from UvulaBob:The visor motor in my Jackbot seems a bit loud. I don't have a recording of it handy, but on a scale of 1 to 10, with 10 being a Red Tremor Shaker Motor, I'd put this visor motor at about a five. It works fine, but it just seems really... grindy. Is my experience unique, or are these motors naturally kind of loud?
I've never thought it was considerably loud but not sure how to measure that.
If you are really concerned, you could send it off to PBR to have it rebuilt.
These motors are not easy to find - they were used ONLY on Jackbot (not pinbot) and Attack From Mars. Pinball Parts Australia does have them NOS I believe.
I've opened one up before...really nothing there to service its just a bunch of gears and goop. I wouldn't recommend taking it apart unless you really know what you are doing.