This is what mine looked like. Honestly I cant remember exactly what was where when I took it off. I believe the curved tube with the fittings on it went into the proportioning valve. The missing fitting on the bottom was fer the back brake line. The nut lookin thing on the front has a spring behind it.(not the bleed screw).
I know I saw a bleed screw somewhere on the assembly when I took it off. But now I can't find it. It may have been attached to somthing I tossed.
Anyhoo, I digress. If u cant see a bleed screw anywhere, loosen the lower line fitting and pump the brakes until all air iz gone.
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And again I gotta say I REALLY think u will be happier just trashin the POS. U dont need it and its just another part to confuse things and break. Just sayin.