First a and foremost, welcome to the bolt.
I did have a question as to why you didn't just back off the self adjuster through the provided slot in the drum? When I bought my 65 c10 I had two wheels locked that I had to back off just to move the truck. Will this not work with a guy emergency cable??
I have the same question.
The emergency brake cable is kind of a separate mechanism from the hydraulic system and the self adjuster mechanism.
I have a 52 3100 and aside from the self adjusting feature on your truck, I believe they are basically the same Bendix system. Please correct me if I an wrong.
You are right in the fact that they are two separate systems but both operate the shoes from the same fulcrum, the star adjuster. Had you loosened the adjuster, you should have been able to pull the drum, drive the emergency brake lever back as you did with the SBC push rod and avoid drilling the drum.
