Description & Operation: Notes

CHANGES, CAUTIONS, CORRECTIONS 

EXCESSIVE AMMETER FLUCTUATION CORRECTION:  This condition usually indicated by excessive ammeter pointer flutter, headlight flicker and heater blower motor speed variations at steady engine speeds, and may be caused by high resistance in field circuit to alternator or voltage regulator improperly set. For proper diagnosis and correction, proceed as follows: Run engine at various steady speeds with heavy electrical load (headlights and accessories on) to determine degree of fluctuation. Stop engine, disconnect lead at "IGN" terminal of regulator and install a jumper wire from "IGN" terminal to positive terminal of battery. Operate engine at 1250 RPM and observe flutter.

1. If ammeter is normal, trouble is corrosion or other high resistance in field circuit connectors. Clean and tighten all connections.
   NOTE: On cars with 7 1/2 ampere fuse in circuit, clean fuse and holder terminals and tape fuse holder to prevent dirt and moisture entry.
2. If jumper wire did not correct the trouble or if ammeter fluctuation is excessive regardless of engine speed or electrical load, remove voltage regulator from car and solder a piece of copper wire between 38 ohm resister terminal connected to "IGN" terminal of regulator and regulator base.
   CAUTION: Use only rosin core solder and be sure regulator base is heated enough for proper metal fusion.
3. Install regulator and adjust according to procedures and specifications below.

   REGULATOR NO. 2098300 FUSIBLE WIRE REPLACEMENT NOTE:  To replace fusible wires, proceed as follows: Cut blown wire from connection at rivet in regulator base (do not unsolder as voltage coil wire may be damaged), and unwind wire from regulator contact bracket. Use rosin core solder only, tin one end of Fusible Wire No. 2275242 and hold wire in recess in rivet against old fuse wire. Put a drop of solder on wires. When cool, pull fusible wire up and wrap around contact bracket and solder wire to bracket to be sure of a good connection.

   Fig 1: Test Connections (Without Special Test Set)

   Courtesy of CHRYSLER GROUP, LLC
   Fig 2: Alternator & Regulator Internal Circuits

   Courtesy of CHRYSLER GROUP, LLC

   Field control type. Temperature compensated, vibrating type voltage regulator with two sets of contacts using a common armature. On Regulator No. 1889960, there is a 7 1/2 ampere fuse in line between IGN terminal and ignition resistor. On Regulators No. 2095700 & 2098300, upper stationary contact bracket is connected to IGN terminal by a fusible wire, and lower stationary contact bracket is connected to ground by another fusible wire. Regulator operates on either upper or lower contacts (both sets are never in operation at the same time) depending on load and battery requirements as follows: