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Open Roads Forum  >  Tech Issues

 > 170VAC coming from my Onan generator

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3 tons

NV.

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Posted: 02/20/21 10:29am Link  |  Quote  |  Print  |  Notify Moderator

Note that 170v is standard AC sinusoidal ‘peak’ voltage that relates to 120v which is RMS... Perhaps check your instrument settings...

3 tons

enblethen

Moses Lake, WA

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Posted: 02/20/21 10:33am Link  |  Quote  |  Print  |  Notify Moderator

Voltage regulator located behind start/stop panel

Parts manual See pages 46-47


Bud
USAF Retired
Pace Arrow

2003 Chev Ice Road Tracker


SHRED

Encinitas, California

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Posted: 02/20/21 10:35am Link  |  Quote  |  Print  |  Notify Moderator

Thank you all for the great advice. I wish there were "like" buttons for posts. You all are great.
I am also contacting Flight Systems soon.


1995 Lazy Daze 23.5' TK

enblethen

Moses Lake, WA

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Posted: 02/20/21 10:48am Link  |  Quote  |  Print  |  Notify Moderator

Flight Systems was easy to work with!

poppa

Dallas, TX

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Posted: 02/21/21 03:56pm Link  |  Quote  |  Print  |  Notify Moderator

3 tons wrote:

Note that 170v is standard AC sinusoidal ‘peak’ voltage that relates to 120v which is RMS... Perhaps check your instrument settings...

3 tons
what? no light bulb for a meter? maybe a true rms meter?

enblethen

Moses Lake, WA

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Posted: 02/21/21 04:02pm Link  |  Quote  |  Print  |  Notify Moderator

Light bulbs with tungsten filaments are a thing of the past.
Nasty when high voltages popped them and broke the glass.
What did work but hard to find is neon light bulbs.

SHRED

Encinitas, California

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Posted: 02/23/21 10:51am Link  |  Quote  |  Print  |  Notify Moderator

UPDATE

I followed this video for testing.

MEASURING YOUR GENERATOR WINDINGS

I then called Flight Systems with the results.
They are so helpful.

Pins 9 and 10 test was not good.
I've got new brushes and springs coming plus I need to shine up the rings.

Chances are my regulator is damaged they said by the fluctuations from the brushes not making good contact.

That video is very helpful.

MEXICOWANDERER

las peñas, michoacan, mexico

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Posted: 02/23/21 11:09am Link  |  Quote  |  Print  |  Notify Moderator

Hint: Use only FLINT PAPER on slip rings. Other materials embed abrasive particles in the copper wildly accelerating graphite brush deterioration. Brush contact to chassis ground resistance should not affect a 30 megohm reading. Disconnected from load the same is true for stator lead tests.

enblethen

Moses Lake, WA

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Posted: 02/23/21 12:08pm Link  |  Quote  |  Print  |  Notify Moderator

Fight Systems sends a tool to clean slip rings

SHRED

Encinitas, California

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Posted: 02/23/21 12:11pm Link  |  Quote  |  Print  |  Notify Moderator

enblethen wrote:

Fight Systems sends a tool to clean slip rings


I ordered it.
It'll be here Friday.

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