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

This document is a black-and-white line-art schematic (with the key components highlighted in red) showing the Thermactor secondary air injection plumbing at the rear of a Ford V8 engine, as viewed from behind (labeled "REAR VIEW"). Three components are called out with arrows: an AIR CONTROL VALVE mounted at the top of the assembly with hoses connected via hose clamps, and two CHECK VALVES — one threaded into a fitting near the back of the intake/cylinder head area on the driver-side, and one on the passenger-side hose branch that drops down toward the exhaust side. The drawing traces the routing of the large-diameter air hoses from the air control valve down to each check valve. A reader can learn where the Thermactor air control (diverter) valve and the two one-way check valves are physically located and how the hoses route between them at the rear of the engine, which is useful when diagnosing secondary air system faults (e.g., exhaust backflow melting hoses) or when replacing the valves and hoses. The document itself contains no year, model, engine size, part numbers, or torque specifications — only the three component labels and the view caption.