Date:         Mon, 23 Mar 2009 20:52:10 -0700
Reply-To:     neil N <musomuso@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         neil N <musomuso@GMAIL.COM>
Subject:      Re: another brake saga
Comments: To: Edward Maglott <emaglott@buncombe.main.nc.us>
In-Reply-To:  <20090324030836.C75B61E836F@tc2.main.nc.us>
Content-Type: text/plain; charset=ISO-8859-1

On Mon, Mar 23, 2009 at 7:57 PM, Edward Maglott
<emaglott@buncombe.main.nc.us> wrote:
> Thanks Neil.  It's not that the shoe is not returning properly.  If
> you watch the video you can see the piston moves out and hits it and
> pushes it off the adjuster.  Then the spring pulls it back to its
> position on the adjuster.  The problem is that the piston then
> continues moving back into the cylinder.  I don't think this is
> supposed to happen.  I think hydraulic brake systems have a property
> where the pistons stay up against the hardware (shoe or pad) and move
> out incrementally to make up for wear, and only get pushed back in
> when you replace the pads or shoes.
>
> It is kind of cool to see the adjuster work, I've always wondered
> about that.  After a few of these tests, I had to ratchet the
> adjuster back because it had turned far enough I couldn't get the
> drum back on.


Ah ok.

I was focused on the 10mm gap between the shoe and piston (as per your
original post) Hence my suggestions regarding assembly of brake parts.

And Mike and Jake make a good point.

And yes. That was interesting to see the adjuster at work. Maybe next
time my drums are off I'll have someone watch to see that mine are
working right. (likely they are though)

Best of luck!  :)

Neil.




-- 
Neil Nicholson '81 VanaJetta 2.0 "Jaco"

http://tubaneil.googlepages.com/

http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines