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Old 03-15-2024, 11:14 AM   #24
72SB
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Join Date: Apr 2022
Location: Moorpark, CA
Posts: 702
Re: Proportioning Valve Keeps Tripping?

I did my 72 manual disc/drum to power using the CPP booster/mc/pv. Rears went to rear of PV, front to front of PV. (pic)

O{, I think your issue is the PV or the shuttle switch in it.

OP, power front disc brakes use a 1 1/8" MC. Manual drum uses 1" MC. Either should "work" but with the 1 1/8 MC the pedal stroke will be shorter which with the booster is all that is needed.
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