Alright, so we're back to this finally. I removed my combo valve and started rebuilding it today. Here's the pressure differential valve piston coming out.
Got that all taken out and cleaned up and stuff. New O-rings from Muscle Car Research all matched up and installed.
So, then it occurred to me that I hadn't seen a spring, and that got me wondering of I missed something. Thought maybe I could find an exploded view online or whatever. Well, Muscle Car Research just so happens to have complete instructions for rebuilding these linked on their page!
https://www.musclecarresearch.com/E0ZC-2B328-AA-rebuild
Okay, so no spring. Clearly it is the VERY same Combination Valve as I have pictured on their instructions. But I noticed one little part that was different. The piston on their Pressure Differential Valve was a separate piece from the end fitting. Mine came out as one piece. Even after cleaning it up and stuff, it wasn't obvious to me that they are supposed to be separate! I could not get them separated by twisting or anything like that. So I ended up needing to find something small enough to stick into the end port so I could knock the piston out of there. I ended up needing to use a drill bit! It was the only thing small enough I could find! None of my punches are that tiny! Finally got them separated.
They had corroded themselves together pretty determinedly! It's clear this is a BIG contributor to my problem if not THE contributor! Oh, but wait. We're not out of the woods yet. I've still got that thingy to make sure the valve doesn't move. Here's a look at how the Brake light switch rides on the piston.
Well now we get to the tool itself
Yeeeeaaaaaaaaaaahhhhhhh, it's WAY too big for the hole. Sooooooo, not sure what I'm going to do to hold it in place now without making a huge mess. No reason I can't modify the switch into something that will do it, i suppose, since my wiring doesn't use that switch. It uses the one on the M/C reservoir.
Connect With Us