Gbouff1@aol.com wrote:
>...What should the voltage be? I was
>expecting 13+ volts. Does this mean my generator is trash?
>
I think you must disconnect the dynamo/generator to get a meaningful
test -- couldn't tell if you had done that.
Quoting from the book of Lucas, the tests are...
1. Verify that the battery is in good condition.
2. Verify belt tension is okay.
3. Test the Armature -- Disconnect dynamo leads and check voltage at
the D terminal (the big one) at 1500 RPM should be 1.5 - 3.0 V.
4. Test the Field -- Leave voltmeter as above and connect ammeter
between D terminal and F terminal (the little one). Increase engine
speed until voltage is about 12V, ammeter should read about 2 amps.
Haynes offers a variation on the above -- you disconnect the leads and
connect a jumper wire between D & F. At idle the dynamo should then put
out about 15V. They indicate that a reading of 0 suggests the brushes
are faulty, about 1V suggests the field is faulty, 4 to 6V suggests the
armature is faulty.
Geo Hahn
59 TR3A
64 TR4
Mt Lemmon, AZ
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