1979 Ford Bronco & F100-F350 Vacuum Distribution Diagram - Hose Routing

This page (page 45 of a multi-page Ford truck reference set) is titled "Vacuum Distribution" and presents a schematic diagram of engine vacuum routing. The diagram shows a multi-port engine fitting (vacuum manifold/tree) mounted at the engine, with individual vacuum lines branching out to the various vacuum-operated systems. Labeled lines and destinations include: engine usage, speed control, air conditioning (with a line marked "TO A/C"), automatic transmission (routing down to an "AUTO. TRANS." component), and vacuum brakes. The vacuum brake line feeds the power brake booster, drawn as a round component. The speed control circuit routes through a connector to a speed control servo and also connects to a speed control vacuum reservoir, both illustrated as separate components on the right side of the diagram. A reader can learn how vacuum is distributed from the engine fitting to each accessory system — brakes, cruise (speed) control, A/C, and automatic transmission — and the general routing/connection order of hoses between those components. The page contains no part numbers, hose sizes, color codes, or year/model statements; it is purely a labeled routing schematic.