[tcb] Re: air in the mc
- From: sammie smith <bugcollections@xxxxxxxxxxxxx>
- To: tcb@xxxxxxxxxxxxx
- Date: Mon, 10 Mar 2008 10:14:09 -0700 (PDT)
If you have the brakes completely bled there can be no air in the master
cylinder. If the master cylinder holds when you first press on it but then
slowly goes down with the pedal but then will pump back up when you hit the
pedal again you may have a master cylinder that is leaking fluid by the piston.
Solution is a new master cylinder. If you have low pedal on first application
but can then pump the brakes up; in my opinion you have air in the system and
you haven't completely bled the system. Make sure you have plenty of fluid in
the reservoir. Also: not sure how it works on a bay, but the earlier busses
and bugs have an adjustment in the plunger to the master cylinder from the
pedal. If this is not properly adjusted it will give you the impression of low
pedal that you can pump up. I'm open to suggestions from other master VW
mechanics.
Brian Denning <i_am_cool_fred@xxxxxxxxxxx> wrote: .hmmessage P {
margin:0px; padding:0px } body.hmmessage { FONT-SIZE: 10pt;
FONT-FAMILY:Tahoma } the brakes have been bled 4 times now, i still have to
pump it up for them to work, that is why i think there is air in the master
cylinder, i don't think it's bad because there are no leaks. i understand i
need to bleed the wheels and have gotten very experienced in that the past
couple of days, there isn't any air comming out of the wheels now. i was just
wondering about the master cylinder, how do i get the air out of it? is there
any trick to it?
---------------------------------
Date: Mon, 10 Mar 2008 09:59:45 -0700
From: bugcollections@xxxxxxxxxxxxx
Subject: [tcb] Re: air in the mc
To: tcb@xxxxxxxxxxxxx
Bleed the brakes: In this order; right rear, left rear, right front, left
front. Use the method recommended in all the VW handbooks and you can do the
job by yourself, though it is helpful to have someone work the pedal while you
watch the fluid to make sure all bubbles have stopped coming out. If you don't
have a manual showing this procedure holler back and I will describe it.
Brian Denning <i_am_cool_fred@xxxxxxxxxxx> wrote: .ExternalClass
.EC_hmmessage P {padding:0px;} .ExternalClass EC_body.hmmessage
{font-size:10pt;font-family:Tahoma;} that is the concensus on the master
cylinder. any tricks to bleeding it with it installed? just unhook the hose and
pump away or what?
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