Bleeding Brakes

[gene]

There are some hints on my web page
gene

>Any secrets on bleeding the brakes? I replaced the master cylinder and
>attempted to bleed the system and I kept getting air coming out of the front
>driver's side cylinder. Am I missing something? The only thing I found was
>that I may have been pumping the pedal too fast. As long as air didn't get
>to the pickup in the bottom of the reservoir, shouldn't I be okay?
>
>Thnaks
>Chip Gremillion
>75 Glenbrook
>
>
Genef -- 77PB/ore/ca
GMC MOTORHOME INFORMATION
mr.erf
http://www.california.com/~eagle/

 

[chip gremillion]

Any secrets on bleeding the brakes? I replaced the master cylinder and
attempted to bleed the system and I kept getting air coming out of the front
driver's side cylinder. Am I missing something? The only thing I found was
that I may have been pumping the pedal too fast. As long as air didn't get
to the pickup in the bottom of the reservoir, shouldn't I be okay?

Thnaks
Chip Gremillion
75 Glenbrook

 

[chip gremillion]

Thanks for the advice Emery. I followed your sequence for bleeding. I
thought I remember being taught to start with the wheel farthest from the
master cylinder. After I kept getting air at the front driver's caliper, I
decided to read the service manual. I see there they tell you to start with
the cylinder CLOSEST to the master cylinder. Could the service manual be
wrong? Or am I wrong?

Chip Gremillion
75 Glenbrook

- ----- Original Message -----
From:
To:
Sent: Wednesday, February 16, 2000 8:34 AM
Subject: Re: GMC: Bleeding Brakes

>

>
>
> that I may have been pumping the pedal too fast. As long as air didn't
get
>
> to the pickup in the bottom of the reservoir, shouldn't I be okay?
>
>
> Thanks
>
> Chip Gremillion >>
>
> First make sure that you have bled the master cylinder properly. You
could
> have some air trapped there that is making its way down to the wheel
> cylinder. You'll never have good pedal if this is not bled properly.
>
> To bleed the wheel cylinders I would suggest that you start with the far
rear
> passenger side tire, then the front rear on the passenger side, then the
rear
> wheels on the drivers side, then the passenger front, then the drivers
side
> front.
>
> With the bleeder screw shut, pump the brakes a few times and then hold the
> pedal down while someone opens the bleeder screw. Do not release the
pedal
> until the screw is closed. Keep repeating this until no more air comes
out,
> pumping a couple of times between bleeds, and you should end up with a
firm
> pedal.
>
> If you do all this and still get air, I'd look for a loose connection or a
> bad hose.
>
> Emery Stora
> 77 Kingsley
> Santa Fe, NM

 

[chris izzig]

chip
start from the passenger rears. connect a vaccuum hose to the bleeder screw and keep the other end submerged in a jar of brake fluid. this will prevent air from going back in.
you can try one of two ways at this point. 1 open bleeder screw, step on pedal hard,close bleeder screw,release pedal. make sure vaccuum hose stays sbmergered and master cylinder stays full. when doing this keep the master cylinder cover tight.
2. same procedure but step on the pedal 4 or 5 times.
3. i dont know i went through a gallon of brake fluid until i finally got a pedal. also dont put the fluid that squirted out back into the system, it was tiny air bubles in it.
i hope this helps.
chris 75 gb
i had my remodel/restoration fun last winter.

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[tim dawson]

You can also get "automatic bleeders" which are nothing more than a check
valve in a piece of hose which will serve the same function as the hose in the
jar of fluid, but may be a bit simpler, since it does not require someone to
hold the host in place. The ones that I have seen are $5.00 or so, although I
have not used one, they look as if they may be a bit of a labor saver.

- - Tim

> chip
> start from the passenger rears. connect a vaccuum hose to the bleeder screw and keep the other end submerged in a jar of brake fluid. this will prevent air from going back in.
> you can try one of two ways at this point. 1 open bleeder screw, step on pedal hard,close bleeder screw,release pedal. make sure vaccuum hose stays sbmergered and master cylinder stays full. when doing this keep the master cylinder cover tight.
> 2. same procedure but step on the pedal 4 or 5 times.
> 3. i dont know i went through a gallon of brake fluid until i finally got a pedal. also dont put the fluid that squirted out back into the system, it was tiny air bubles in it.
> i hope this helps.
> chris 75 gb
> i had my remodel/restoration fun last winter.
>
>
> Join 18 million Eudora users by signing up for a free Eudora Web-Mail account at http://www.eudoramail.com
>

- --
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