Home » Public Forums » GMCnet » [GMCnet] Onan Power Problem
| [GMCnet] Onan Power Problem [message #266138] |
Sat, 15 November 2014 17:28  |
Chris Herron
Messages: 19
Registered: March 2014
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Help! Ok, the onan (6kw) has power out of the main feed (into the
breaker) but no power going into the coach. We swapped out the breaker
thinking that could be the problem, but no luck. What's the best way
to troubleshoot this?
The shore power works fine.
Thanks,
Chris Herron
'73 Sequoia -Dallas
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| Re: [GMCnet] Onan Power Problem [message #266141 is a reply to message #266140] |
Sat, 15 November 2014 18:18  |
Chris Herron
Messages: 19
Registered: March 2014
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Matt, thanks for the reply. The issue is with the feed. We were taking the readings directly at the generator. But yes, we also made sure the plugs were swapped out. It had been working fine until a couple of weeks ago.
> On Nov 15, 2014, at 6:14 PM, Matt Colie wrote:
>
> Chris Herron wrote on Sat, 15 November 2014 18:28
>> Help! Ok, the onan (6kw) has power out of the main feed (into the breaker) but no power going into the coach. We swapped out the breaker thinking
>> that could be the problem, but no luck. What's the best way to troubleshoot this?
>>
>> The shore power works fine.
>>
>> Thanks,
>> Chris Herron
>> '73 Sequoia -Dallas
>
> Chris,
>
> I almost hate to ask, but is the shore power cord plugged into the receptacle in the cord box??
> Your coach was not built with a transfer contactor.
> If you were told one had been added maybe it was and is not working.
>
> Matt
> --
> Matt & Mary Colie - Members GMCMI, GMCES
> '73 Glacier 23 - Still Loving OE Rear Drum Brake with Applied Control Arms
> SE Michigan - Twixt A2 and Detroit
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| Re: [GMCnet] Onan Power Problem [message #266143 is a reply to message #266141] |
Sat, 15 November 2014 18:26 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Chris Herron wrote on Sat, 15 November 2014 19:18Matt, thanks for the reply. The issue is with the feed. We were taking the readings directly at the generator. But yes, we also made sure the plugs were swapped out. It had been working fine until a couple of weeks ago.
Chris,
Good start, I occurred to me just after I send that there have been a number of circuit breaker failures. This is the breaker that is right on the generator frame. There is no exact replacement that I know of, but JimK has something that fits.
So, if you have voltage out of the machine and nothing at the receptacle, that would be it.
I am told that they can fail (have not seen) so that they physically behave like they are working, but there is no contact closure to send the power along.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: [GMCnet] Onan Power Problem [message #266144 is a reply to message #266143] |
Sat, 15 November 2014 18:33 |
Chris Herron
Messages: 19
Registered: March 2014
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Junior Member |
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Matt,
I got a used replacement breaker from Jim Bounds and that didn't solve it. There's 120 at the source and we bypassed the breaker this evening and still no power to the coach.
> On Nov 15, 2014, at 6:26 PM, Matt Colie wrote:
>
> Chris Herron wrote on Sat, 15 November 2014 19:18
>> Matt, thanks for the reply. The issue is with the feed. We were taking the readings directly at the generator. But yes, we also made sure the
>> plugs were swapped out. It had been working fine until a couple of weeks ago.
>
> Chris,
>
> Good start, I occurred to me just after I send that there have been a number of circuit breaker failures. This is the breaker that is right on the
> generator frame. There is no exact replacement that I know of, but JimK has something that fits.
> So, if you have voltage out of the machine and nothing at the receptacle, that would be it.
> I am told that they can fail (have not seen) so that they physically behave like they are working, but there is no contact closure to send the power
> along.
>
> Matt
> --
> Matt & Mary Colie - Members GMCMI, GMCES
> '73 Glacier 23 - Still Loving OE Rear Drum Brake with Applied Control Arms
> SE Michigan - Twixt A2 and Detroit
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Onan Power Problem [message #266145 is a reply to message #266138] |
Sat, 15 November 2014 19:29 |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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Senior Member |
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Since you have power at both sides of the generators circuit breaker the problem most likely is a bad or broken connection behind the generator between the generator breaker and the metal flex line that goes into the coach
Roy Keen
Minden,NV
76 X Glenbrook
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| Re: [GMCnet] Onan Power Problem [message #266149 is a reply to message #266138] |
Sat, 15 November 2014 20:04 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Chris,
In Avions there is a junction box on top of the Onan enclosure under the passenger side bed. I have NO idea if your 73 Sequoia is
wired the same. When Double Trouble lost Onan power I wound up having to repair one of the connections that had fried.
Here's a link to the photos:
http://www.gmcmhphotos.com/photos/g6585-onan-connection-repair.html
Regards,
Rob M.
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Chris Herron
Sent: Sunday, November 16, 2014 10:29 AM
To: gmclist@temp.gmcnet.org
Subject: [GMCnet] Onan Power Problem
Help! Ok, the onan (6kw) has power out of the main feed (into the
breaker) but no power going into the coach. We swapped out the breaker
thinking that could be the problem, but no luck. What's the best way
to troubleshoot this?
The shore power works fine.
Thanks,
Chris Herron
'73 Sequoia -Dallas
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Onan Power Problem [message #266150 is a reply to message #266138] |
Sat, 15 November 2014 20:22 |
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ljdavick
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma: -3
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Senior Member |
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My coach has an automatic switch, but I believe standard coaches were wired such that you move a plug from one socket to another if you had shore vs ONAN power.
Could it be as simple as that?
Larry Davick
> On Nov 15, 2014, at 3:28 PM, Chris Herron wrote:
>
> Help! Ok, the onan (6kw) has power out of the main feed (into the
> breaker) but no power going into the coach. We swapped out the breaker
> thinking that could be the problem, but no luck. What's the best way
> to troubleshoot this?
>
> The shore power works fine.
>
> Thanks,
> Chris Herron
> '73 Sequoia -Dallas
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
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| Re: [GMCnet] Onan Power Problem [message #266151 is a reply to message #266141] |
Sat, 15 November 2014 20:38 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Senior Member |
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When at the GMCMI convention in Montgomery, TX someone asked me to look at their Onan as it was exibiting the same symptoms that you have. I removed the cover from the breaker box at the top of the Onan and found voltage on both sides of the breaker showing that the breaker was good. However o found that there was no voltage at the receptacle inside the cord box. I looked behind the Onan and found that a plastic connector was broken where the wires lay on the tray below and behind the Onan. I used a clamp on connector with rubber tape to connect the wires and it fixed the problem.
Emery Stora
> On Nov 15, 2014, at 5:18 PM, Chris Herron wrote:
>
> Matt, thanks for the reply. The issue is with the feed. We were taking the readings directly at the generator. But yes, we also made sure the plugs were swapped out. It had been working fine until a couple of weeks ago.
>
>
>
>> On Nov 15, 2014, at 6:14 PM, Matt Colie wrote:
>>
>> Chris Herron wrote on Sat, 15 November 2014 18:28
>>> Help! Ok, the onan (6kw) has power out of the main feed (into the breaker) but no power going into the coach. We swapped out the breaker thinking
>>> that could be the problem, but no luck. What's the best way to troubleshoot this?
>>>
>>> The shore power works fine.
>>>
>>> Thanks,
>>> Chris Herron
>>> '73 Sequoia -Dallas
>>
>> Chris,
>>
>> I almost hate to ask, but is the shore power cord plugged into the receptacle in the cord box??
>> Your coach was not built with a transfer contactor.
>> If you were told one had been added maybe it was and is not working.
>>
>> Matt
>> --
>> Matt & Mary Colie - Members GMCMI, GMCES
>> '73 Glacier 23 - Still Loving OE Rear Drum Brake with Applied Control Arms
>> SE Michigan - Twixt A2 and Detroit
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Onan Power Problem [message #266172 is a reply to message #266150] |
Sun, 16 November 2014 03:35 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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Senior Member |
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ljdavick wrote on Sat, 15 November 2014 20:22My coach has an automatic switch, but I believe standard coaches were wired such that you move a plug from one socket to another if you had shore vs ONAN power.
Could it be as simple as that?
Larry Davick
Yes.
The shore power cord is plugged into a receptical in the cord compartment when you want Onan power. The Onan is connected to that receptical.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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| Re: [GMCnet] Onan Power Problem [message #266185 is a reply to message #266177] |
Sun, 16 November 2014 11:25 |
Otterwan
Messages: 946
Registered: July 2013
Location: Lynnwood (north of Seattl...
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Does the coach work on shore power?
1977 Birchaven, Lynnwood WA - "We may not be able to stop all evil in the world, but I know that how we treat one another is entirely up to us."
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| Re: [GMCnet] Onan Power Problem [message #266195 is a reply to message #266189] |
Sun, 16 November 2014 16:28 |
Otterwan
Messages: 946
Registered: July 2013
Location: Lynnwood (north of Seattl...
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Senior Member |
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The reason I asked is my Royale has an "either/or breaker setup. The Onan is hardwired to the coach. Turning on the shore power breaker turns off the Onan breaker and vice versa. If the shore power breaker is on and the Onan is running, there is no power to the coach.
1977 Birchaven, Lynnwood WA - "We may not be able to stop all evil in the world, but I know that how we treat one another is entirely up to us."
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| Re: [GMCnet] Onan Power Problem [message #266200 is a reply to message #266189] |
Sun, 16 November 2014 17:21 |
Kosier
Messages: 834
Registered: February 2008
Karma: 1
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Senior Member |
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Chris,
Look in the junction box located in the front of the utilities compartment.
I had a loose connection in there that caused this same problem.
Gary Kosier
77 PB w/500 Cad
Newark, Oh
-----Original Message-----
From: Chris Herron
Sent: Sunday, November 16, 2014 2:37 PM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Onan Power Problem
It does work on shore power
On Sun, Nov 16, 2014 at 11:25 AM, David Orders wrote:
> Does the coach work on shore power?
>
>
> --
> 1976 Royale "Twinkie II" Lynnwood WA - "We may not be able to stop all
> evil in the world, but I know that how we treat one another is entirely up
> to
> us."
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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