Home » Public Forums » GMCnet » Ok ..as were talking Onans this week
Ok ..as were talking Onans this week [message #368914] |
Sun, 27 February 2022 23:54 |
boybach
Messages: 566 Registered: December 2020 Location: Vancouver Island
Karma: 4
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My gen set runs just dandy, I'm happy to say I have easy starts and she doesn't miss a beat. It didn't always behave so well, but it does now, and as ignorance was bliss I thought all was well ...UNTIL ...just as winter was setting in, my pal Colin brought over a little plug-in digital voltmeter. This little device showed displays the output and it turns out things are a bit too enthusiastic, getting up in the high 130's ....so as it's beginning to warm up a little bit weatherwise, I'd like to get her to kick back to something closer to 120v or so. What's the best way to do that guys?
Larry
Larry - Victoria BC -
1977 ex-Palm Beach "Ol' Leaky" 40,000 miles, PO said everything working but forgot the word NOT. Atwood helium fridge, water heater & furnace. SS exhaust system, Onan, Iota Converter, R134A, New fuel lines & heat exchange hoses
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[GMCnet] Re: Ok ..as were talking Onans this week [message #368915 is a reply to message #368914] |
Sun, 27 February 2022 23:58 |
jimk
Messages: 6734 Registered: July 2006 Location: Belmont, CA
Karma: 9
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Slow down the engine.
On Sun, Feb 27, 2022 at 9:55 PM wrote:
> My gen set runs just dandy, I'm happy to say I have easy starts and she
> doesn't miss a beat. It didn't always behave so well, but it does now, and
> as
> ignorance was bliss I thought all was well ...UNTIL ...just as winter was
> setting in, my pal Colin brought over a little plug-in digital voltmeter.
> This little device showed displays the output and it turns out things are
> a bit too enthusiastic, getting up in the high 130's 8o ....so as it's
> beginning to warm up a little bit weatherwise, I'd like to get her to kick
> back to something closer to 120v or so. What's the best way to do that
> guys?
>
> Larry
> --
> Larry - Victoria BC -
>
> 1977 ex-Palm Beach "Ol' Leaky" 40,000 miles, PO said everything working
> but forgot the word NOT. Atwood helium fridge, water heater & furnace. SS
> exhaust system, Onan, Iota Converter, R134A, New fuel lines & heat
> exchange hoses
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
--
Jim Kanomata ASE
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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[GMCnet] Re: Ok ..as were talking Onans this week [message #368916 is a reply to message #368915] |
Mon, 28 February 2022 00:26 |
James Hupy
Messages: 6806 Registered: May 2010
Karma: -62
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Before you do too much, put a good steady load, like an air conditioner, on
the Onan and then read the voltage. If it goes down to the 121-122 range, I
wouldn't mess with it. If it stays 130, then you need to slow it down a bit
under load.
Jim Hupy
Salem, Oregon
On Sun, Feb 27, 2022, 9:59 PM Jim Kanomata wrote:
> Slow down the engine.
>
> On Sun, Feb 27, 2022 at 9:55 PM wrote:
>
>> My gen set runs just dandy, I'm happy to say I have easy starts and she
>> doesn't miss a beat. It didn't always behave so well, but it does now,
> and
>> as
>> ignorance was bliss I thought all was well ...UNTIL ...just as winter
> was
>> setting in, my pal Colin brought over a little plug-in digital voltmeter.
>> This little device showed displays the output and it turns out things are
>> a bit too enthusiastic, getting up in the high 130's 8o ....so as it's
>> beginning to warm up a little bit weatherwise, I'd like to get her to
> kick
>> back to something closer to 120v or so. What's the best way to do that
>> guys?
>>
>> Larry
>> --
>> Larry - Victoria BC -
>>
>> 1977 ex-Palm Beach "Ol' Leaky" 40,000 miles, PO said everything working
>> but forgot the word NOT. Atwood helium fridge, water heater & furnace. SS
>> exhaust system, Onan, Iota Converter, R134A, New fuel lines & heat
>> exchange hoses
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>>
>
>
> --
> Jim Kanomata ASE
> Applied/GMC, Newark,CA
> jimk@appliedairfilters.com
> http://www.gmcrvparts.com
> 1-800-752-7502
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
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Re: Ok ..as were talking Onans this week [message #368917 is a reply to message #368914] |
Mon, 28 February 2022 00:52 |
boybach
Messages: 566 Registered: December 2020 Location: Vancouver Island
Karma: 4
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Thanks guys, it's in the HIGH 130's (more like 140v) ..so yes, I do have to slow down the engine I guess!
Now I just have to find out HOW to do that
Larry
Larry - Victoria BC -
1977 ex-Palm Beach "Ol' Leaky" 40,000 miles, PO said everything working but forgot the word NOT. Atwood helium fridge, water heater & furnace. SS exhaust system, Onan, Iota Converter, R134A, New fuel lines & heat exchange hoses
[Updated on: Mon, 28 February 2022 00:53] Report message to a moderator
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Re: Ok ..as were talking Onans this week [message #368918 is a reply to message #368914] |
Mon, 28 February 2022 06:47 |
JohnL455
Messages: 4447 Registered: October 2006 Location: Woodstock, IL
Karma: 12
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There is a jam nut on the eyebolt type device that pulls on the governor spring. It’s right on top when you open the drawer. However, unless someone has messed with it, why has it changed? The rod ends on the governor should be lubricated and the throttle checked for easy movement with no squeaking or binding. Duane recommended engine oil but I prefer a Zoom spout oiler as very light. Others in the know prefer a graphite based lube to not attract dirt. After this lubrication check Voltage and proceed to adjust if needed. Most go for 125-127VAC no load then check with load. Hopefully stable at 123 or so not lower with 2 ACs running.
If there is too much hunting or not enough governor correction, the sensitivity of the governor can be adjusted, but report back first.
John Lebetski
Woodstock, IL
77 Eleganza II
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Re: Ok ..as were talking Onans this week [message #368920 is a reply to message #368918] |
Mon, 28 February 2022 10:47 |
boybach
Messages: 566 Registered: December 2020 Location: Vancouver Island
Karma: 4
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Senior Member |
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JohnL455 wrote on Mon, 28 February 2022 04:47There is a jam nut on the eyebolt type device that pulls on the governor spring. It’s right on top when you open the drawer. However, unless someone has messed with it, why has it changed?
Well I didn't mess with it! - When I got the coach, 1 year ago this month, the genny ran after a fashion - but had no working choke and had to be manually choked to get it going. The o-ring on air bleed screw on the carb was chewed so she leaked fuel there and the starter stuck along with a bunch of very weird wire routing/crimps and a duff solenoid. Fixed it all so the unit starts and runs fine, just a bit fast then I guess. Maybe the air bleed screw can be adjusted to bring down the speed?
Larry
Larry - Victoria BC -
1977 ex-Palm Beach "Ol' Leaky" 40,000 miles, PO said everything working but forgot the word NOT. Atwood helium fridge, water heater & furnace. SS exhaust system, Onan, Iota Converter, R134A, New fuel lines & heat exchange hoses
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Re: Ok ..as were talking Onans this week [message #368927 is a reply to message #368922] |
Tue, 01 March 2022 01:09 |
Ken Burton
Messages: 10030 Registered: January 2004 Location: Hebron, Indiana
Karma: 10
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From my main frame computer days. I could not call the power company unless their supply (under load) was +10% or -5% of rated voltage (120, 208, 230, 240, 440, etc) It was the same spec. for the three main power companies I worked with in 2 states so I assume it is the same country wide.
That makes the acceptable 120 voltage 114 to 132.
When I worked as an electrician in the steel mills we generated our own power at 25 cycles and never much cared what the secondary voltage was unless something failed. We did watch frequency very closely to a fraction of a cycle. We had a pair of 25 to 60 cycle frequency converters.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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