Ford Thermactor Secondary Air Valves Diagram - AIRB AIRD TAB TAD EVR Check Valve

This document is a labeled schematic reference sheet showing six Ford secondary air injection (Thermactor) and emissions-related valves. The AIRB (air bypass) valve is shown in two cutaway views identifying the vacuum nipple, inlet, outlet, polyester silencer, the AIRB/relief exhaust port (vent), and a connection for a remote dump. The AIRD (air diverter) valve diagram labels Outlet A, Inlet, and Outlet B. The COMBINATION valve view identifies the inlet from the air pump, vacuum port "S" (air control), outlet "B" to catalyst, vent holes, vacuum port "D" (air bypass), and outlet "A" to engine. The TAB/TAD section shows the Thermactor Air Bypass and Thermactor Air Diverter solenoids with part numbers E8AE-9H465-BA (TAB) and E8AE-9H485-AA (TAD), both individually and mounted as a pair on a bracket. The CHECK valve cutaway shows the rubber disc, the inlet (IN), free flow direction, and the outlet to the exhaust manifold and/or catalytic converter. The EVR (EGR Vacuum Regulator) diagram labels its ports to the EGR valve and to source vacuum, plus its schematic symbol. Readers can use this sheet to identify these valves, their ports, and flow directions for diagnosis or replacement.