Follow-up here. As a reminder, I'm working on a 1951 3100.
I removed a bolt from the fixed end of my left rear leaf spring, cleaned it out reinstalled, and greased through the grease fitting. Not much of an accomplishment, I know, but it's new territory for me, and it's pretty fascinating. Next, I'll tackle the shackle! Then when I fully understand how this is all put together, I'll order some replacement parts.
New question: I see what I'll call a "secondary leaf spring" (Picture #1 below) that's not mentioned in the shop manual nor pictured in the factory assembly manual, at least not in section 4, Rear End Suspension. What is this called and why is it not mentioned in the literature?
My main reason for asking is this spring has an upward-facing bumper (Picture #2 below) that is worn down to the point that metal bumps metal when this spring bottoms out. I'd like to replace the bumper but I don't know what it's called or what the assembly is called (I'm not sure how it's secured in there; it's loose enough to wiggle but won't come out. There's a stud that comes in from the bottom, but it doesn't appear to be a bolt).
