Ford Thermactor Air Control & Check Valve Location Diagram - Rear Engine View

This document is a black-and-white line-art schematic drawing showing the rear view of an engine's Thermactor (secondary air injection) plumbing. Three components are called out with arrows: an AIR CONTROL VALVE mounted at the top of the assembly with hoses attached by clamps, and two CHECK VALVES, one located low near the center of the engine (threaded into a fitting near the rear of the intake/cylinder head area) and one on the right side connected to a hose running down from the air control valve. The drawing shows the routing of the air hoses from the air control (diverter) valve down to the check valves, as well as surrounding engine detail such as fuel injectors, fuel rail fittings, the rear of the intake manifold, and the transmission bellhousing bolt flange. The caption 'REAR VIEW' indicates the perspective is from the back of the engine. A reader can learn where the Thermactor air control valve and both check valves are physically located and how the secondary air hoses are routed at the rear of the engine. No part numbers, torque specifications, year, or model information appear in the drawing itself; the vehicle application (1990 Ford Bronco) comes from the uploader's attribution.