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Home >> Chrysler >> 1966 >> Imperial Base, 2D Convertible, Automatic Trans, Trans Mfr CD A727 >> Repair and Diagnosis >> Electrical >> Charging Systems >> Alternator Regulators - ESSEX Regulator >> Description >> Lower Contacts Test

Lower Contacts Test

  1. With ignition switch turned off, disconnect field wire from "FLD" terminal of alternator.
  2. Connect one of the test leads of Tester Field Control to "FLD" terminal of alternator.
  3. Connect other lead of Tester Field Control to field wire disconnected from alternator "FLD" terminal.
  4. Set Tester Voltage Switch to 16 VOLT position.
  5. Connect positive lead of Tester Voltmeter to "BAT" terminal of alternator.
  6. Connect negative lead of Tester Voltmeter to battery negative terminal.
  7. Rotate Tester Field Control to the DIRECT position.
  8. With engine operating at 1250 RPM, rotate Tester Control Knob clockwise until Ammeter reads exactly 15 amperes.
  9. Rotate Tester Field Control from DIRECT position to OPEN position and then back to DIRECT position to cycle the system.
  10. Observe Tester Voltmeter. Voltmeter now indicates setting of voltage regulator lower contacts. Refer to "Specifications".
  11. Rotate Tester Control Knob to DIRECT position. If regulator operates within specifications, proceed to lower contact voltage test. If upper contact voltage setting is not within specifications, adjust voltage setting as outlined in "Regulator Adjustments" test number (1).
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