Well, y'all missed the big brake saga. I posted it during the period that
the list had gone screwy. It's all fixed up now (seems to be, anyway). But
it's raised a new question in my mind.
How the deuce is this brake pressure differential warning actuator supposed
to work? I assumed it was supposed to be a switch of some sort (even says
so on the wiring diagram), but examination showed that it clearly is not.
It's got two terminals that connect to green and green/orange wires, but
there's a jumper across the terminals. It's also got a metal shaft that
goes from the terminals out to the end that sticks into the master cylinder
body, but the shaft doesn't move.
When I connect the . . . 'thing' (clearly not a switch) to its wiring
connector, the 'BRAKE' light on the dash glows continuously, even with the
'thing' removed completely from the master cylinder and dangling freely. No
wonder I unplugged it so many years ago. Pondering its function, I could
see that if the pressure differential piston made contact with the
protruding shaft it would ground the green-wire circuit and blow a fuse.
I'm fairly confident THAT is not its designed function.
All in all, it's got me completely baffled. There's no way this thing could
function as a switch, and could never have done what it was intended to do.
Can anybody enlighten me? Is the piece I've got incorrect for my 77 B?
--
Jay Tilton | jtilton@vt.edu
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