Date: Fri, 12 Jan 2007 17:02:38 -0600
Reply-To: Allen Hill <route66rider@KNOLOGY.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Allen Hill <route66rider@KNOLOGY.NET>
Subject: Re: bleeding bloody brakes
In-Reply-To: <FA1C9162-6F72-4318-B321-3A583EEBF089@VERIZON.NET>
Content-Type: text/plain; charset="US-ASCII"
I have a number of short pre-flared brakes lines that I have either picked
up at the FLAPS or from a pick & pull place. Using a pair of these I point
the cut end down into the maser cylinder which is full of fluid and mounted
in my work bench vise. I pump the bore slowly until ALL evidence of ANY
bubbles is no longer seen.
Route 66 Rider!
Ramon Hill
Live Long and Be Free
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Matthias Kuster
Sent: Thursday, January 11, 2007 11:16 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: bleeding bloody brakes
The air vent hole I am not sure about. The cap has the sensor connector for
low fluid, then a blue pin (valve). Looks to be alright.
What I am puzzled about is brake bleeding. I have no idea how to do that. I
leave the plastic plugs in, fill reservoir and keep pumping, the vise
holding it? 50 times?? I just took it out the other day and did what my idea
was of bench bleeding: no plugs, cylinder in vise at angle like in vanagon,
filled up reservoir, then pumped several times, cleaned up (had rags all
round it). Watched bubbles coming up at rear brake connection (aft). Then
reinstalled.
Obviously I don't know w hat I am doing then, because I have no idea what a
bleeding kit would look like(obviously wasn't included. The MS came with
plugs, but doubt they would hold any pressure (no threads).
Or I ruined the MS. Sometimes I would have it pressurrized at 20psi AND push
the pedal...but then why does it work after 1 pump?
How come the Bentley or Hanes doesn't mention bench bleeding?
Airic, your way is probably the best, though I prefer using the brake
pressurizer. Once I get any of my mates involved it will involve several
sixpacks, and they'll have a good laugh at me that's for sure.
I am obviously missing:
bench bleeding kit and the understanding and know how of the bench bleeding
process. I know some of you explained this, but I still don't get it.
Cheers &TIA
Matthias
On Jan 11, 2007, at 8:43 PM, phil cain wrote:
> Check to make sure that your brake filler cap has a clear air vent
> hole in it. This simple thing will cause all kinds of problems. The
> system can be blead out with the cap off, everything will work good,
> but then put the bad cap on and the system turns to crap.
> This is a vented brake system. Phil
> --- Matthias Kuster <matthiaskuster@VERIZON.NET>
> wrote:
>
>> Hi list,
>>
>> I am looking to get some input on my brakes for a
>> 1984 Westy:
>>
>> I have replaced front calipers, rear slave cylinders, installed new
>> pads in the front and left the old shoes in the back (plenty of meat
>> on them). I have also replaced the master cylinder and reservoir. I
>> have checked whether the servo holds vacuum-yes it does, as well as
>> the line into the engine bay. have replaced one way valve as well.
>> The rear adjustment nut is turned until the wheel does not spin
>> freely anymore, off the ground, then backed off. I have done this
>> multiple times also.
>>
>> I have bled the system now the 7th time with a pressure bleeder at 20
>> psi, starting at RR, RL, FR then FL wheel, and bled at least 500 ccm
>> at each wheel (according to Bentley) each time.
>> There don't seem to
>> be leaks, at least my reservoir is not going down, ie I'm not losing
>> fluid. I have also done it just with the pumping method once, with a
>> hose attached to bleeder screw and submersed in liquid.
>>
>> Once I am done, while still at standstill, the pedal feels firm. Then
>> I get on the road and all of a sudden there is greater travel for
>> maybe one pump of the pedal, but only when I move from a standstill,
>> ie change gears from reverse to 1st especially, or pull into a store,
>> then come out and start driving, swoosh, one entire push of the brake
>> pedal and hardly anything happens, very little brake action. The next
>> pump and the brakes are firm again. This happens especially if I back
>> up a bit, and is a real PITA when parallel parking.
>>
>> What am I doing wrong?? I also tried pumping while pressure bleeding.
>> Only thing I have not tried is keeping pedal depressed while closing
>> bleeder screws. Maybe I am somehow sucking air back in, even though
>> the pressure bleeder is still at 20 psi and attached to the
>> reservoir.
>>
>> Other option could be faulty parts, especially the master cylinder. I
>> cannot 100% confirm that I am not losing brake fluid somewhere (leak)
>> and suck air back in. But I do not see wet areas anywhere around the
>> lines and junctions.
>>
>> Could this be the brake regulator?? Could it be because of my
>> lines???
>>
>> Any help appreciated Volks!!
>>
>> Keep on trucking
>>
>> Matthias
>>
>
>
>
>
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