Charging Circuit Resistance
NOTE:
Before making test connections, disconnect battery ground cable at battery negative post to avoid accidental shorting of charging or field circuits.
- Disconnect "BAT" lead at alternator and connect a 0-75 ampere scale D.C. ammeter in series between alternator "BAT" terminal and disconnected lead. Connect positive lead of a voltmeter to disconnected "BAT" lead and connect negative voltmeter lead to battery positive terminal. Disconnect field lead from alternator, then connect a jumper lead from alternator field terminal to ground. Connect a tachometer and then connect battery ground cable. Connect a variable carbon pile to battery terminals.
- Start engine and operate at idle.CAUTION: To avoid damage, reduce engine speed to idle immediately after starting.NOTE: If necessary, test voltage drop at each connection to locate connection with excessive resistance.