[CriticalMass]

Thanks COBRAMAN. I found the series of youtube videos you posted shortly after creating this thread which cleared up my confusion, but I hadn't seen the other source, which is very helpful.

I was confused when I opened the caliper because I have the old style pawl and it wasn't seated where it should be. As a result, I couldn't picture how the mechanism worked, but the video made it apparent.

I cleaned up the teeth on the ratchet gear with a file but there is still some wear where the pawl engages them. I'd like to replace the gear just so that a $10 part doesn't cause a failure on a part that requires so much time to access. I've found a couple places that have it listed for sale, but they're all out of stock. I have a feeling it's been discontinued.