It sounds like the master cylinder is due for a rebuild. Often, the Cup
Seals in the plunger become damaged and will work well when you pump the brake,
but they don’t seal the plunger against the cylinder, and allow the brake pedal
to sink. If, as you said, the pedal gets mushy when you first hit the brake, but
“Pumps Up”, it is likely in need of a new (or rebuilt) Master Cylinder.
mike higgins
Sent: Tuesday, January 21, 2014 2:25 PM
Subject: Re: [FWDLK] 55 plymouth brakes
Jesus:
I had a similar problem with my 56 and
after a while, discovered that I had a cross threaded brake line that leaked
when I pumped the brakes. I replaced the line and problem was
fixed.
John
In a message dated 1/21/2014 4:21:30 P.M. Eastern Standard Time,
chemnixon@xxxxxxxxx writes:
After 23
years, I am finally asking this question:
Ever since I bought my 55 Ply
Belvedere 6cy auto, I've had brake issue problems. No matter how many times I
bleed the brake lines, master cyl. etc., the pedal always goes soft after the
car sits idle for a few days. I have to remind myself to pump the pedal a few
times every so often or I end up purging the brake lines. Also, there's always
a tendency for the car to to steer to the right and it's usually the first
cylinder to start leaking fluid--Throughout the years, I replaced the brakes
shoes, cylinders, etc., and it's the same. To bleed the system I use the
jar and hose method- Is this a common problem with these cars? Anybody has
the same problem? Suggestions?
Thanks
Jesus
55 Ply
Belv sedan 6 cyl, auto
trans
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