<VV> rear brakes on 64 Monza

[Tony Underwood]

At 07:04 PM 5/11/2009, Frank DuVal wrote:
>Another BIG problem we are seeing now causing brake lockup is the
>deterioration of the inside of the rubber brake hoses. The insides come
>apart and form check valves, allowing brake pressure to apply the shoes,
>but not allow the pressure to relieve through the master cylinder when
>the brake pedal is released. Result-smoking brakes.




This is not a recent phenomenon.     Happened to me while coming back 
from a 'vair chapter get-together outta town in the '60 a few years ago.


The 4-door began to lug a bit.   Curiouser and curiouser became I 
'til I got alarmed and stopped to see wtf.


Ever see a brake drum glow red?   Visible through the slots in the 
wheel.  It even discolored and blistered the paint on the center 
portion of the wheel (still like that to this day).   I was worried 
about the tire.    I waited on the side of the road for a while until 
things cooled down enough (turned out to be not long enough) for me 
to attempt to remove the brake hose from the rr wheel cylinder 
(boiling brake fluid hissed out of the still-hot wheel cylinder but 
not the hose at the metal line end; it was THAT clogged) and plug the 
line with a piece of hammered-flat wheel weight crammed between the 
metal line and the brake hose.   The remainder of the trip home was 
uneventful.   Drum was warped, shoes were black, wheel cylinder was 
ok but the cups inside were vulcanized to the insides of the 
bore.    It actually had become self-aggravating in that the brake 
fluid boiled in the wheel cylinder and made even more pressure 
against the brake shoes which made more heat which got the fluid 
hotter etc ad nauseam.

When I got home I went shopping at AZ, replaced all the hoses, then 
fixed the brakes.   I learned a lesson.


A month or so later, the same thing happened to the '67 500 
coupe.    Only IT didn't burn anything up, caught it early, hoses 
went on that one too.


tony..