[T3] Brake Hints!

[William Jahn]

How does the brake fluid change process using DOT 3 or 4 differ?  I'm not
using DOT 5. I've never done one person bleeding before it was always a
second person pumping the pedal and me working the bleeders.

 I've watched many videos showing this procedure and granted they are now
VW specific other than one for Mercedes which was light pumps gravity
bleed.

 I understand how the rapid pump churns up old fluid and crud. I've just
never seen anyone do it or mention it.  Most do state to remove as much old
fluid from the reservoir so not to introduce more filth into the system
since most of the fluid is in the reservoir . The big difference in VW is
the reservoir is not mounted on the master.  Yet that really does not
change much, it's just two lines that will hold more old fluid.

On Tue, Aug 30, 2022 at 9:00 AM Jim Adney <jadney at vwtype3.org> wrote:

> On 30 Aug 2022 at 8:45, Max Welton wrote:
>
> > Since the purple dye dissipates it should be easy to just open the
> > bleeders and pump out the old fluid while introducing new at the MC. When
> > purple shows at each bleeder you're done. No need to get any air in the
> > system.
>
> If you do rapid pumping, as Dow Corning suggests, you'll get old dirty
> fluid
> out first, followed by a slurry of mixed old and new, then a bit of
> somewhat
> clear silicone, followed, at last, by Purple DoT-5. Then you're done.
>
> Yes, you're much better off not getting air in the system at all.
>
> --
> *******************************
> Jim Adney, jadney at vwtype3.org
> Madison, Wisconsin, USA
> *******************************
>
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