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Hey Ed: If you do not have a service manual, I suggest you obtain one. They
are relatively inexpensive, and for things like bleeding the brakes are
indispensable for owners/non mechanics. The brake systems are described in
fairly good detail starting on page 35 and run through page 38.
The proper bleeding of the Hayes brakes depends on
whether or not your airplane has a bleeder valve in each brake line. And even
after proper bleeding, there may still be air in the expander tube inside the
wheel. This requires a vigorous pumping of the brake pedal 25 to 30 times and
then re bleeding the brakes.
The brake blocks are supposed to be checked at
every 100 hour/annual and replaced when they wear down approximately 1/8 inch
from new.
I have never checked a Hayes brake system and am
only quoting from the service manual.
Lynn Nelsen
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