Ford Bronco Automatic Choke Diagrams - 2150, 7200 VV & 4180-C Carburetors

This is page 157 from Chapter 4 ("Fuel and exhaust systems") of an automotive repair manual, illustrating automatic choke components on several Ford carburetors. Four figures are shown: Fig. 4.22 depicts the automatic choke thermostatic spring housing on the 2150 2-V carburetor, pointing out the thermostatic spring housing choke cap index; Fig. 4.23 shows the same housing installed on a Holley-C 4-V carburetor, identifying the spring housing index mark and choke housing index marks; Fig. 4.24 details the automatic choke control (diaphragm) assembly on a Model 7200 VV carburetor; and Fig. 4.25 is an exploded view of the automatic choke assembly for the 4180-C 4-V carburetor, labeling the choke lever, heat-to-vacuum pick-up, thermostatic spring, hot air intake, heat-to-thermostatic ring, bimetal choke cap, and holding strap. The accompanying text (steps 5-7 of a fuel line procedure) covers replacing fuel tubing with matching diameter, double-flare fittings, inspecting rubber hoses for leakage or deterioration, replacing clamps with hoses, and dual-tank switching valves. It notes the electrically operated switching valve on factory auxiliary tanks is located near the heater controls, and warns to disconnect the negative battery cable before replacement to avoid sparks igniting gasoline.