SHIFTING REGULATING (THIRD) BRUSH TO ADJUST CURRENT OUTPUT OF GENERATOR
light and headlamp lighted (headlamp on upper light beam) is standard factory setting. If motorcycle is used without radio, remove resistor from generator "relay" and "switch" terminals, and adjust charging rate to a maximum of about 4 to 5 amperes with the above standard equipment lamps lighted.
All Three Brush Generators: Standard factory setting should be sufficient to keep battery in a good state of charge under normal service conditions. At average driving speeds, the charging rate is about the same with lights either "ON" or "OFF" because when lighting switch is "ON" generator output is automatically boosted enough to take care of the standard lighting eguipment. The charging rate can be adjusted higher or lower as desired to meet unusual service conditions, but bear in mind that a higher than normal charging rate is likely to overcharge, overheat and damage battery.
When it is found necessary to adjust charging rate, proceed as follows: Remove generator end cover, and loosen screws that hold the regulating brush (small brush) plate assembly to generator frame end. Then shift regulating brush to the right to increase charging rate—to the left, to decrease charging rate. Shift brush only a little at a time, until desired maximum charging rate is obtained (see Illus. 94).
2. Radio Two Brush Generator: A maximum charging rate of 11 to 12 amperes (over ignition only) controlled by current and voltage regulator. When battery voltage is low, regulator will limit generator to about 11 to 12 amperes, and after battery voltage is up to normal, regulator will then limit generator to very low charging rate. If regulator does not control generator within specified limits, see "Current and Voltage Regulator," Page 106.
Remove the two screws in generator end cover and pull off cover, exposing the commutator and brushes. Brushes can be taken out after unfastening spring retainers. To unfasten small (regulating) brush spring retainer, simply press it downward and outward. Remove fastening screw from each of the larger brush spring retainers.
Brushes are worn out and should be renewed when longest side of brush measures %" or less.
Be sure tp insert brushes into holders so that concave face of brush fits curve of commutator.
Remove footboard, clutch footpedal assembly, and generator end cover. If oil or grease has worked out of bearings and onto commutator, wipe it off first with a rag moistened with gasoline or solvent and then sandpaper until commutator is bright, using No. 00 sandpaper. CAUTION: Never use emery cloth to clean commutator. See "Generator Charging Rate."
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