Adjustment #2: Grip Cam Limit Switch Mounting/Location (w/two videos)

Grip Cam Limit Switch Mounting/Location (switch position)

This procedure gets only a one-sentence mention in the IOM, but I feel it needs to be discussed in more detail in order to save on wear and tear on the equipment. Let's face it, this unit is currently 64 years old, parts are getting harder and harder to find, and I see no sense in subjecting anything to unnecessary abuse.

Before adjusting the Grip Cam Limit Switch, the physical location of the switch needs to be adjusted front-to-back so that a pin located on it (circled below) is properly located. This pin is located here:

Here is a side view of that same pin:

That pin needs to be located close to the wall it rides next to (and the groove it sometimes rides within), but it should not touch it/them. Normally this would not be an issue, as one could "set it and forget it", but partway through the Gripper Arm rotation, the pin is going to come across a section where there are two thicknesses of "wall", and we don't want it to hit/ride against anything as that will cause wear.

Here's what I am referring to:

To quote the IOM, "The Cam Pin of the Grip Cam Limit Switch should be located so that there will be equal clearance between the barrier walls at the point where they overlap, when the Cam Pin is in the inner and outer position".

They make it sound like the pin itself is adjustable, but I think what the writers mean to imply is that the switch location is adjustable.

Screenshot from the video showing the location of the Grip Cam Limit Switch mounting bolts:

 
I could try explaining this all day, but perhaps the best way to see this is to watch the videos.

Link to set-up video: https://youtu.be/bQ2IAd7cQ1A

Link to video showing proper operation: https://youtu.be/AlByOj2GLBs