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>From: wcollins@sbnsw.com.au
>Anyway, got home and started to install it. Cool everything looks good. Now
>to bleed the brakes. Which valve to use? On the front disc brakes, ('73
>Squareback) there are two bleeder valves. One on top and one on bottom. On
>the front right (right hand drive car) I used the top one and didn't worry
>about the bottom one. On the front left, I used the bottom one (top one had
>been butchered). Should both of these be bled. Brakes seem to be working
>fine when finished and the next day when we went back to do the handbrake
>cable they were still ok. One of the books I read (Yes, have Idiot guide but
>not with me when doing car) said there is two pistons in front brake calipers.
> Does this mean one valve per piston?
These calipers DO have two pistons (all type III calipers do) but the two
bleed valves are not for that. The top valve allows you to bleed off any
air that is in the caliper and has accumulated at the top. The bottom valve
allows you to fully drain old fluid from the caliper if you are flushing
old, moist, fluid from the system.
If your pedal is soft, you will need to get that last upper valve working.
You can still order replacement valves from the dealer.
I love these late calipers because they are larger, and because I can bleed
the last remnants of DoT-3/4 fluid from a system that I have changed to
Silicone DoT-5 brake fluid.
Jim
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Melissa Kepner Jim Adney
jadney@vwtype3.org jadney@vwtype3.org
Laura Kepner-Adney
Madison, Wisconsin
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