Heater System: Removal & Installation Ford Econoline E350

REMOVAL & INSTALLATION

Disconnect blower motor lead wire at wiring harness. Remove ground wire mounting screw from firewall and 4 screws from blower motor mounting plate. Carefully remove blower motor assembly. To install, reverse removal procedure.

Removal & Installation (Front Blower Motor)

Locate blower resistor in engine compartment. Unplug electrical connector from resistor. Remove 2 screws and resistor from heater case. To install, reverse removal procedure. Check blower motor operation.

Removal & Installation (Rear Blower Motor)

Remove bench seat and service cover. Disconnect wiring harness at resistor assembly. Remove mounting screws and resistor assembly. To install, reverse removal procedure. Check blower motor operation.

Remove trim applique and 3 screws retaining control panel to mounting bracket. Carefully pull control panel from opening. Disconnect electrical connectors, vacuum hoses, illumination bulb and temperature control module. Remove push-on vacuum hose retaining clips from function selector valve, and remove harness. To install, reverse removal procedure.

1. Remove heater hoses from heater core in engine compartment. Plug hoses. Remove lower instrument panel lower trim panel.
2. Remove 2 screws retaining heater outlet floor duct on right side of vehicle. Remove heater outlet floor duct.
3. Remove 6 screws from heater core cover. Remove heater core cover. Remove screw and retaining bracket at bottom of heater core. Remove heater core and seal from case. To install, reverse removal procedure. Refill and leak test cooling system.

1. Disconnect positive battery cable. Separate bulkhead electrical connector. Remove left and right inside windshield moldings. Remove engine cover. Remove steering column molding. Remove steering column opening cover, opening reinforcement and column shrouds.
2. Remove right lower trim panel. Remove left and right cowl trim panels. Remove parking brake assembly, but DO NOT disconnect cable. Disconnect 3 wiring connectors on bottom of steering column. Loosen bolt, and disconnect ignition switch connector from steering column. Disconnect radio antenna lead. Disconnect brake warning light switch connector.
3. Disconnect temperature selector vacuum lines. Remove right and center instrument panel attaching bolts. Remove steering coupler pinch bolt, and separate steering shafts. Disconnect shift cable.
4. Remove 4 bolts attaching left side of instrument panel to cowl. Remove attaching screws from top of panel. Have an assistant support panel, and move it rearward. Disconnect any remaining wires and components. Working with an assistant, remove panel through driver-side door. To install, reverse removal procedure.

1. Remove instrument panel. See «INSTRUMENT PANEL»(ref-39803-S01065442392001011200000) . Disconnect vacuum hoses from panel/defrost vacuum motor and floor/defrost vacuum motor. Remove retainers attaching center register duct and heater air outlet duct to plenum.
2. Separate plenum from heater housing, center register duct and heater air outlet duct. Remove plenum assembly. Remove vacuum motors from plenum. To install, reverse removal procedure.

Remove third, fourth and fifth bench seats (if equipped). Drain cooling system. Disconnect heater hoses located under left side of body. Disconnect rear heater assembly harness connectors. (Scheme 1) Remove mounting bolts and lift assembly off locating dowel pin. Remove assembly while guiding heater hoses through from underbody. To install, reverse removal procedure.

Scheme 1

1. Remove third, fourth and fifth bench seats (if equipped). Remove auxiliary heater cover attaching screws, and remove cover assembly. Remove strap retaining heater core in auxiliary heater case.
2. Drain coolant from radiator. Disconnect heater hoses from auxiliary heater core. Plug openings. Disengage wire assembly from auxiliary heater core seal. Slide heater core and seal assembly out of case. To install, reverse removal procedure. Fill cooling system.

Scheme 2