Cherokee 180 soft brake - causes?

Jay Honeck wrote:
Our A&P hates bleeding Cherokee brakes, but it's more of a repetitive
pain than a really difficult procedure. He just climbs under the wing,
holds the line (or brake assembly?), and has me pump the brakes until
nothing but fluid comes out. It can take several pumps, and uses a bit
of brake fluid, but it works well. (I've not seen what he's doing under
there, since I'm inside the plane, but he's catching the fluid in a
container of some sort.)

They can't be bled from the bottom up?


They can, but this is my A&P's method of preventing the OP's problem of
eternally soft brakes. It apparently ensures that no air is left hiding
anywhere in the system.

I know, that's why you do it from the bottom up, no pumping the brakes
required. My mechaninic rebuilt my left main strut this week and since
that requires disassembly of the brake system on that side I helped him
today bleed the brakes. Reason #6458 why Beech has the reputation they
do for quality and good engineering and design. The reservoir is on the
firewall, no having to wiggle over the front seats to wait for the fluid
to come squirting out onto your carpet.