Date:         Tue, 31 Jan 2012 11:41:45 -0800
Reply-To:     neil n <musomuso@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         neil n <musomuso@GMAIL.COM>
Subject:      Re: Rear brakes frustration
Comments: To: Rick Koller <rkoller@helix.nih.gov>
In-Reply-To:  <201201311615.q0VGFUrT085063@helix.nih.gov>
Content-Type: text/plain; charset=ISO-8859-1

I agree. Likely an adjustment issue. Since hand brake cable adjustment
is slacked off, maybe there's more brake adjustment required than
anticipated? If it were me, I'd crank those shoes tight to the drum,
back off adjusters til drag felt *then bleed*, drive it, check
adjustment again.

Next time I do my rears, drums still off, I'm going to turn each
adjuster, observe which direction moves adjuster in or out, draw a
picture. In the past I've found it's easy to get "turned around" and
turn the adjuster the wrong way.

And I agree re: vacuum bleeder. Tried one, didn't like it. Might've
been quality issue or operator error, but it seemed to be a poor tool
for bleeding brakes. And depending on how much play there is between
bleeder screw threads and cylinder housing, and/or how far bleeder
screw backed out, a vacuum bleeder will tend to pull air through at
bleeder screw threads.

If the pedal travelled further than usual, (used to bleed brakes or
travelled further due to shoes not close enough to drums) maybe master
cylinder piston seals got damaged?

Neil.



On Tue, Jan 31, 2012 at 8:15 AM, Rick Koller <rkoller@helix.nih.gov> wrote:
....

> 2. followed Bentley and numerous archive postings on adjustment
> afterwards including loosening the cable for the hand brake before
> adjusting the shoes
> 3. There is drag on the drums from the new shoes, no leaks at the
> wheel cylinders and they moved freely back and forth when I put the
> new shoes on,  new brake fluid after flushing all the lines using a
> vacuum pump.
> 4. Result: mushy pedal with poor braking, van didn't brake badly
> before the work  but no pulling sideways at sudden stops,




-- 
Neil n

65 kb image Myford Ready For Assembly  http://tinyurl.com/64sx4rp

'81 VanaJetta 2.0 "Jaco"  http://tubaneil.googlepages.com/

Vanagon VAG Gas I4/VR Swap Google Group:

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