I purchased and rebuilt a 1400 years ago and it’s been running great except for one problem - sometimes a tray won’t come out. I finally found the issue, and it was related to one adjustment screw that is not identified in my manual - or so I thought. It turns out that there is an error in the manual (at least the version I have).
It’s Fig 66 - Indexing Wheel Lock Arm and Cam Plate. The error is that the box labeled “ACTUATING ARM AND NUT ADJUSTING SCREW“ is pointing to the wrong screw - it should be pointing to the adjusting screw that is up and to the right on that same figure. The lower screw is not named, but it is referenced in the text as requiring the 3/16” gap.
Once I figured this out I was able to adjust the two screws successfully. When they were out of adjustment, the lock arm would not always engage with the selector cam, so the tray take out arm would not always align with the tray and bind up.
It took me a bit to understand how to set the top screw because it was not clear to me what gap I should be setting. If you look VERY closely at the figure (I needed a magnifying glass) you can see that the gap is between the driving prowl and the cam wheel measured HORIZONTALLY. In other words, the prowl sits to the left (looking into the view hole from the back od the machine) of one of the cam wheel teeth by the required 1/32" - 3/64*. I at first thought the gap was measured vertically from the prowl to the cam wheel.
One other note…. Apparently my screws were so far off that when I first tried to set them I had a lot of problems - the top screw didn’t seem to do anything and I had to back the bottom screw all the way out to get the desired gap. Also, the top gap was not visible through the plate, as is shown in the figure. After playing with the screws a bit, the segment gear seemed to end up in a different spot at the home position. At this point the top gap was perfectly visible through the plate viewing hole and I was able to set both screws to the correct positions with the screws reasonably close to their midpoints. This totally fixed my occasional tray removal problem.
Sorry for the long post and hopefully this isn’t something that was already widely known. But I couldn’t find any reference to this misprint. Hopefully it will help someone out.