| nighthawk 550 electrical problem [message #448880] |
Mon, 26 September 2005 01:34 |
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R. Pierce Butler Wrote:
> "krusty kritter" kriyamanna [at] aol.com wrote in
> news:1127663192.911006.136640
> [at] g47g2000cwa.googlegroups.com:
> -
> -
>
> Given that it is trying to charge, I would say that one or more
> rectifier
> diodes are bad. Just keep in mind that a diode is nothing more than
> an
> electrical "check valve". It is supposed to allow current to flow one
> way
> only. If it doesn't it is NFG.-
>
> Ah, yes. NFG means "not functionally good" of course...
>
> -
>
> Why yes it does! (;)
When testing the diodes on the rectifier the results show that they are
within specs. However when checking the resistance on the three yellow
wires from the stator the resistance read 0.0 ohms. This is not within
specs according to the electrex flow chart for testing charging
systems.
--
jlpridge
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| Re: nighthawk 550 electrical problem [message #454947 ] |
Mon, 26 September 2005 15:25 |
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jlpridge wrote:
> When testing the diodes on the rectifier the results show that they are
> within specs. However when checking the resistance on the three yellow
> wires from the stator the resistance read 0.0 ohms. This is not within
> specs according to the electrex flow chart for testing charging
> systems.
That certainly does sound ominous as regards the health of the stator
windings.
Did you try the open circuit voltage test, running the engine with the
stator disconnected and reading the voltage across the three output
pins.
If you don't get around 70 or 80 volts AC, the atator is defective (or
the
permanent magnet rotor isn't turning).
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