Charging Circuit Resistance: Notes
NOTE:
Before making test connections, disconnect battery ground cable at battery negative post to avoid accidental shorting of charging or field circuits.
- Disconnect lead at alternator "BAT" terminal and connect a 0-50 ampere scale D.C. ammeter in series between "BAT" terminal and battery lead (see illustration). Connect positive lead of voltmeter to battery lead and negative voltmeter lead to battery positive terminal. Disconnect field lead at alternator "FLD" terminal and ignition lead at regulator "IGN" terminal, then connect jumper wire between alternator "FLD" terminal and alternator "BAT" terminal. Reconnect battery ground at battery.
- Connect a variable carbon pile to battery terminals, then start and operate engine at a speed to obtain 10 amperes flowing in circuit. Voltmeter reading should not exceed 0.3 volts. If a higher voltage drop is indicated, inspect, clean and tighten all connections in charging circuit.NOTE: If necessary, test voltage drop at each connection to locate connection with excessive resistance. Before disconnecting test equipment, disconnect battery ground cable.