What is Power Brakes?by caacarOctober 26, 2019 1. The action of the power brake In the engine and a hydraulic actuating Booster vacuum brake braking force and the like benefits. Tags:Professional nounsproper nouns Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Name * Email * Website Comment * Save my name, email, and website in this browser for the next time I comment. Δ