Brake pedal to push rod disassembly

Good evening,

Attempted to install a new master cylinder today, and I couldn't get the push rod out.

So I need to disconnect the rod from the brake pedal. I crawled under the dash, but couldn't see it too well.

Does anyone have a picture of the fastener?

Do I have to drop the steering column to get at it?

Thank you,
Jim P

 

This is on a 76

 

Check out this link. Brakes (1bad6t.com)

 

Thank you