[T3] 1971 Fastback; More Problems!

Dave Hall dave at hallvw.clara.co.uk
Sun May 19 13:43:47 PDT 2013


Was this as soon as you got home?   The fluid may have got too hot due to a
binding brake shoe.  This may be brake fluid with a lower boiling point than
normal - old fluid that has absorbed water.  If the brake pedal was good
again the next morning, that's probably the reason.   As you renewed a lot
of the system, you may have also replaced the fluid with silicone DOT5 - in
which case, disregard my suggestion as DOT5 doesn't absorb water!

It is possible for the compensation port in the master cylinder to get
blocked, which stops excess fluid going back into the reservoir, and
relieving the fluid pressure as things warm up, giving a runaway situation
of hotter fluid = more brake pressure = hotter brakes = more pressure.  I
think both rears would have suffered the same though, if so.

Dave
UK VW Type 3&4 Club
===================


-----Original Message-----
From: type3-vwtype3.org-bounces at lists.vwtype3.org
[mailto:type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of Art
Sterrett
Sent: 19 May 2013 18:48
To: type3 at vwtype3.org
Subject: [T3] 1971 Fastback; More Problems!

Got all my electrical problems solved except for one.  Turned out to be the
battery, installed a new battery and all is well.  I must of said something
that had Jim thinking I changed a bunch of wiring around but I did not. 
Found several things that did not appear as the schematic showed them and
that was what I was trying to get across, I did not change anything as
everything was working OK before the problems.  The one item that still
gives me a problem is the turn signals.  The right signal works fine, the
four ways work fine, the left signal works only if you put pressure on the
lever and I have been unable to locate the problem.  It acts like a bad
contact or something!  Would like suggestions if anyone has run into this
before.

Now for new problems!  Coming home yesterday my brake pedal went almost to
the floor and it felt like one or more of the wheels had the brakes on, or
they were dragging.  I had less than a block to go to the house so I kept
going.  The right rear wheel felt and smelled hot so I pulled it to see what
was going on.  Found no broken springs, etc.  Found no leaks, the reservoir
is full of fluid.  In order to remove the drum I had to back off the rear
shoe because it was tight against the drum, the front shoe was not.  The
emergency brake appears to work fine.  When I had my wife pump the brake
pedal I didn't see any action at the wheel cylinder or any movement at the
brake shoes.  I don't understand how the rear shoe all of a sudden got up
against the drum and stayed there.  Has anyone ever had this occur?  I don't
want to start tearing into this brake system without some direction on what
I should be checking.  The entire brake system was new  not long ago, Jim
rebuilt my master cylinder and the calibers, the rear wheel cylinders were
replace as were all the lines and hoses and they maybe have a little less
than a thousand miles on them and they have been trouble free until this
incident.  The car did set quite awhile while doing body work, painting,
etc., after the brakes were installed as I only recently started driving it
on a daily basis.  Would like to hear from those who have a lot of
experience with type 3 brakes!

 
Art Sterrett
Mobile, Alabama
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