Hello, take a Phillips screw driver and remove to screws And remove the cover then get 3 in 1 motor oil and oil the Motor plus the shutter two drops of oil. You'll be back in beeswax. The Keystone projector.
I have the 456A. I replaced the rubber feed and the drive belt and cleaned parts that showed the need. The machine seems to work well, the automatic feed works well but when projecting on the screen, there is no picture showing, only the white screen.
The 253ax was actually the only projector out of the lot that was fixed. The Kodak unit was beyond repair and the 256a seemed to need a new motor. I did have a video but never uploaded it. I'll have to see if I can find it. I may make a new video of it.
the last one from the sound might be stuck from rust, WD40 on the moving parts might get it unstuck, and it might not, hard to tell, and I certainly am not a professional
@@hebrewdiver that looks to be very similar to mine, I don't remember exactly how but if you take off the bolts and open the shell you should be able to reach the belt, I'm not exactly sure how to get the belt off though
