Lincoln 7L1Z-19805-B Fan And Motor Assembly

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Disconnect the blower motor's electrical connector. Remove the motor cover screws and separate the cover from the motor. Remove the motor mounting screws and lower the motor out of the housing. If replacing, transfer the fan wheel to the new motor by removing the clip and pushing the nut onto the shaft. For Expedition and Navigator models with a console blower motor, remove the braces from under the console, the blower duct, and the duct covers. Disconnect the electrical connector and remove the bolts to remove the motor. Some models have a rear heat/air blower behind the left-rear interior trim panel.

After disconnecting the electrical connector, the three blower motor cover screws should be removed and the blower motor cover should be separated from the blower motor.

If the blower operates, but not at all speeds and the blower resistor has been checked, disconnect the electrical connector from the back of the blower speed switch and test the terminals for continuity, replacing the switch if the continuity is not as described.

Connect a voltmeter to chassis ground and probe pin 87A with the positive lead of the voltmeter. Voltage should be greater than 10 volts. Attach another jumper from pin 86 to chassis ground and use the voltmeter to check for 10 volts or better voltage at pin 87. If the relay fails any of these tests, replace the relay.