Electrical System

Electrical system is a 6-volt, one wire ground return system with negative ground. Three-brush generator is regulated by the third or regulating brush and "lamp load." Lamp load regulation is accom-

Slished by connecting "shunt" field winding in the ghting circuit. When lamps are turned "ON" this field is energized and generator output is increased to carry load of lighting eguipment. Two-brush generator is regulated entirely by current and voltage regulator.

Generator models are identified as follows:

Standard Generator—Model 32E

Radio (three brush) Generator—Model 32E2

Radio (two brush) Generator—Model 32E2 and 32E2R

When Generator Fails to Charge

When generator apparently quits charging (indicated by signal light in switch panel staying lit or battery going dead—see "Instrument Panel Signal Lights," Page 5), the trouble may be of such nature that repairs can be made without removing generator. Follow procedure outlined below, step by step, until the trouble is located.

1. Remove black wire from generator signal light terminal on relay if a three brush generator, or generator signal light green wire from generator "relay" terminal if a two brush generator, and keep wire end from touching any part of motorcycle. Turn ignition switch "ON." If wire is not grounded, signal light in instrument panel will remain out—if grounded, light will go on. With engine running at fast idling speed and wire grounded, signal light in instrument panel will remain on whether or not generator is charging.

2. Test the battery and if its condition is questionable replace with fully charged battery before making further tests.

3. Remove left footboard and clutch footpedal assembly.

4. Disconnect any condensers found connected to generator "relay" terminal and generator frame end or cover. A shorted condenser will prevent generator charging. Do not as yet remove resistor from generator "relay" and "switch" terminals of a radio (three brush) generator.

5. Remove generator end cover and inspect brushes to make sure they are not worn out, broken or gummy and sticking in brush holders.

6. See that commutator is not excessively oily, dirty or gummy. See "Cleaning Commutator," Page 103.

7. Make sure brush holders are not bent and possibly striking shoulder on commutator.

8. If the fault is not found through above checks, it may be in cut-out relay, current and voltage regulator if motorcycle is so equipped, or in wiring between generator and battery.

To check whether trouble is in generator, relay or current and voltage regulator, or wiring between generator and battery:

A. Connect an ammeter (two-brush generator, use at least an 0-30 ampere scale ammeter) between battery negative (right) terminal and ground.

B. Disconnect wires from generator "relay" terminal and battery positive terminal and connect a jumper wire directly between these two terminals. Also, if generator is two-brush type, disconnect wire from generator "switch" terminal and temporarily connect a short length of wire between generator "switch" terminal and ground. A convenient ground connection can be made by connecting wire to generator end with a commutator end cover screw.

Standard and Radio (three brush) Generator:

C. Start and speed up engine and check reading of ammeter. If generator shows normal charge (see "Generator Charging Rate," Page 103) trouble is in cut-out relay (see "Cut-Out Relay," Page 105) or in wiring between relay and battery (see "Wiring Diagram," Page 114 or 115). If standard generator shows no charge, it must be removed for further attention. If radio generator shows no charge, check resistor connected to "relay" and "switch" terminals to make sure it is not defective and grounding to generator frame end. If not grounded generator must be removed for further attention.

Radio (two brush) Generator:

D. Start and speed up engine and check reading of ammeter. If generator shows charge of 15 amperes minimum, trouble is in cut-out relay (incorporated with current and voltage regulator), in wiring between generator "relay" terminal and regulator "GEN" terminal, in wiring between regulator "BAT" terminal and battery, in wiring between generator "switch" terminal and regulator "F" terminal (see "Wiring Diagram," Page 112 or 117) or in current and voltage regulator (see "Current and Voltage Regulator," Page 106). If generator shows no charge it must be removed for further attention.

0 0

Post a comment