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Date:         Wed, 24 Mar 2010 12:26:19 -0700
Reply-To:     Jake de Villiers <crescentbeachguitar@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Jake de Villiers <crescentbeachguitar@GMAIL.COM>
Subject:      Re: Proper Brake Pedal Feel/Travel?
Comments: To: neil n <musomuso@gmail.com>
In-Reply-To:  <c4e7c5f91003241034g1ba0189ct83cef2d2e4d99133@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

Hey Neil, if it turns out that you need a new booster (which I really doubt) I have a spare.

On Wed, Mar 24, 2010 at 10:34 AM, neil n <musomuso@gmail.com> wrote:

> On 3/24/10, Don Hanson <dhanson928@gmail.com> wrote: > > On Tue, Mar 23, 2010 at 11:58 PM, neil n <musomuso@gmail.com> wrote: > > > >> Yes. I hear a soft "whoosh" but could be a hiss. Pretty sure that part > >> is normal. > >> > >> Feel of pedal changes when booster vacuum expired. I'm just about > >> certain booster is working properly. But..... > >> > >> I get what you're saying. Check pedal with engine off + vacuum gone > >> and see if pedal is sinking. i.e. feels like a failed MC. > >> > >> Neil. > >> > > > > What you're describing sounds like a faulty MC to me. I replaced the > one > > in my 84 and a little over a year later (about 20k miles) the new one > again > > started that same behavior, if I read right what you are feeling. Mine > had > > no "clunk", though. It simply sank way too low for my peace of mind. > Also, > > mine would pump up again and then sink slowly under braking pressure...so > > the symptoms may not be exactly what you have. > > > > Before you 'throw parts" at the problem you might want to go back and > > bleed it once again. Be really meticulous with procedure. Be 100% > positive > > you get all the air out, for sure. Check that your bleeder valves are in > > good condition, that you have a good fit on the tubing that takes the > bled > > fluid out of the valves, put that hose down into a glass jar and make > sure > > to keep the end immersed in some fluid as you bleed so that no air can > > possibly return through the bleeder valve... If you have *any* doubts > about > > whether you may have screwed-up during your bleeding procedure...go back > and > > start over again--Even if it is the very last wheel and the last spurt of > > fluid......Air in the system...any at all..will cause weirdness. You may > > have a speck of dirt somewhere in a valve or opening, too. Use a clean > > 'catch jar' and check the fluid that's come out when you finish.. > > > > When I service brakes, I am scrupulously thorough. The brake systems, > > while actually pretty simple, are intolerant of mistakes and less than > 100% > > effectiveness, especially in a vehicle like our Vanagons, can sometimes > have > > really bad consequences. > > > > I like to use different color brake fluid when I bleed brakes so that > you > > can visually see you have fresh fluid all the way to the bleed valve. > ATE > > is what I use, which comes in Super Blue and Gold colors. Google it or > > Pegassus racing has it mail order. In a puzzling situation like you are > > encountering, I would bleed the clutch, too...Probably needless, but as I > > mentioned...Scrupulously Thorough..is best, for brake work. > > > > Don Hanson > > > > > Thanks Don. All good tips. > > Wheel cylinders, calipers almost brand new. Each cylinder and caliper > bled at same rate, so I assume no blockage. > > Fronts bled at a noticeably faster rate. I found this notable as hole > in bleeder same ID as rears. > > No dirt entered system. > > Different colour fluid? Neat tip. Thanks. > > Bled clutch again, fluid dirty. No surprise as I only bled that a > little recently, that being first time since purchase or Westy. > (hangs head in shame. <grin>) > > With newly built pressure bleeder, watched stream come out of tube on > rears. Tube not immersed. But. Flow was steady, no backing up. Hose > secure to bleeder. > > I have a couple things to try first before throwing parts around. :) > > Thanks very much people. > > 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 >

-- Jake

1984 Vanagon GL 1986 Westy Weekender "Dixie"

Crescent Beach, BC

www.thebassspa.com www.crescentbeachguitar.com http://subyjake.googlepages.com/mydixiedarlin%27


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