caliper return spring cam cleaning

[WAUFX at aol.com]

Hello--

I am in the middle of trying to free up the return springs on my old
off-the-car 90q rear calipers, inspired by Fred Munro's post about his
webpage for doing this on S-4 calipers.

I just need to confirm one thing, the cam that rotates and is all rusty is
NOT supposed to completely disconnect from the caliper, right? It's just
supposed to pull out about 1/2" from the caliper?

Fred says "Pop the cam in & out a few times, liberally applying lube. The cam
should now return to the stop on
 its own, even without the assistance of the return spring."

Fred, or anyone, do you mean push it in and out or completely separate it
from the caliper? Thanks!

Megan