Join Date: Apr 2008
Location: Central Point, Oregon, USA
There is something called a Residual Valve.
This is used to keep the brake fluid from draining back to far down the brake line, it holds brake fluid pressure up much closer for that better rear brake feel.
Disc Brakes require a certain LB residual valve and Drum rear brakes different poundage residual Valve.
They allow the fluid to back off just enough to release the caliper piston, but keep fluid pressure right where you need it.
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