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| Re: WE......HAVE........AC FROM THE ONAN!!! [message #228426 is a reply to message #228424] |
Mon, 04 November 2013 16:12   |
Otterwan
Messages: 946
Registered: July 2013
Location: Lynnwood (north of Seattl...
Karma: 0
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Senior Member |
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Flashing the field coil. After trying everything else, I hooked a 12 volt battery to the field coil wires and let it sit for several seconds. Got a huge spark when I disconnected it (blew the tip off my poor little alligator clip). Fired it up, and it's putting out a steady 130 VAC. So now just needs a little adjusting to get the voltage down a tad and we're good to go.
FYI the original field coil was bad (open), and I have no idea how long the one I replace it with had been sitting. Could have been years, or decades.
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] WE......HAVE........AC FROM THE ONAN!!! [message #228432 is a reply to message #228426] |
Mon, 04 November 2013 17:06 |
Kingsley Coach
Messages: 2691
Registered: March 2009
Location: Nova Scotia Canada
Karma: -34
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Senior Member |
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Nice work, Son ! <g>
When making your adjustments remember to try to have it putting out
120volts Under Load...if you weren't going to load it up you wouldn't have
turned it on and 120 is what it would be getting at your house. Just
sayin' ....
Mike in NS
On Mon, Nov 4, 2013 at 6:12 PM, David Orders <dao@oarsllc.com> wrote:
>
>
> Flashing the field coil. After trying everything else, I hooked a 12 volt
> battery to the field coil wires and let it sit for several seconds. Got a
> huge spark when I disconnected it (blew the tip off my poor little
> alligator clip). Fired it up, and it's putting out a steady 130 VAC. So now
> just needs a little adjusting to get the voltage down a tad and we're good
> to go.
>
> FYI the original field coil was bad (open), and I have no idea how long
> the one I replace it with had been sitting. Could have been years, or
> decades.
> --
> 1976 Royale "Twinkie II", 1978 Palm Beach with front end fire. Lynnwood WA
>
> “Before you criticize someone, you should walk a mile in their
> shoes. That way when you criticize them, you are a mile away from them and
> you have their shoes.”
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS
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| Re: [GMCnet] WE......HAVE........AC FROM THE ONAN!!! [message #228436 is a reply to message #228426] |
Mon, 04 November 2013 17:47 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Senior Member |
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I just know that Jim Miller will not say "I told you so! " But, I am sure he will be thinking it.
Emery Stora
On Nov 4, 2013, at 3:12 PM, David Orders <dao@oarsllc.com> wrote:
>
>
> Flashing the field coil. After trying everything else, I hooked a 12 volt battery to the field coil wires and let it sit for several seconds. Got a huge spark when I disconnected it (blew the tip off my poor little alligator clip). Fired it up, and it's putting out a steady 130 VAC. So now just needs a little adjusting to get the voltage down a tad and we're good to go.
>
> FYI the original field coil was bad (open), and I have no idea how long the one I replace it with had been sitting. Could have been years, or decades.
> --
> 1976 Royale "Twinkie II", 1978 Palm Beach with front end fire. Lynnwood WA
>
> “Before you criticize someone, you should walk a mile in their shoes. That way when you criticize them, you are a mile away from them and you have their shoes.”
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] WE......HAVE........AC FROM THE ONAN!!! [message #228440 is a reply to message #228436] |
Mon, 04 November 2013 18:00 |
Otterwan
Messages: 946
Registered: July 2013
Location: Lynnwood (north of Seattl...
Karma: 0
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Senior Member |
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| emerystora wrote on Mon, 04 November 2013 15:47 |
I just know that Jim Miller will not say "I told you so! " But, I am sure he will be thinking it.
Emery Stora
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And I'll say I knew what was wrong all along, I was just testing him! ;o)
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] WE......HAVE........AC FROM THE ONAN!!! [message #228445 is a reply to message #228436] |
Mon, 04 November 2013 18:13 |
Jim Miller
Messages: 501
Registered: March 2008
Karma: 10
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Senior Member |
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On Nov 4, 2013, at 6:47 PM, Emery Stora wrote:
> I just know that Jim Miller will not say "I told you so! " But, I am sure he will be thinking it.
Just glad to hear that it is working.
My suggestion to apply 12VDC directly to the fields (using the proper polarity) while watching for ~50VAC output can save a lot of time in the troubleshooting process because:
1) It proves the field windings are intact.
2) It proves the armature is OK
3) It proves the brushes are OK
4) It "re-flashes the field" as others have described.
There's no reason to fear the application of 12VDC during the test because under normal operating conditions the reactor and bridge are applying around 110 VDC at 3 Amps to the field. In the test I described the 12VDC application to the field only draws around 300 milliamps!
--Jim Miller
1977 Eleganza II
1977 Royale
Hamilton, OH
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Jim Miller
1977 Eleganza II
1977 Royale
Hamilton, OH
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| Re: WE......HAVE........AC FROM THE ONAN!!! [message #228449 is a reply to message #228420] |
Mon, 04 November 2013 18:20 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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The absolutely best instrument to set up an Onan is a Kill-a-Watt. Version does not matter. Put the unit in the coach, fire it up, throw an extension cord out a window in the port (left) side and plug it in there. Then, fire up the A/C, the microwave and the water heater and now you can check frequency and line voltage and decide which you like more.
This is from a guy with 2ea Fluke 77, an 87, a multi-hundred MHz counter and a whole bunch of other tech stuff. He uses the 30$ thing to set up the Onan.
Now, make arrangements with Jim to get the bad field re-wound.
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] WE......HAVE........AC FROM THE ONAN!!! [message #228452 is a reply to message #228449] |
Mon, 04 November 2013 18:44 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Matt,
And they sell them at MY favorite tool store Harbor Freight!
Unfortunately I just had to replace mine when it began reading 144 Volts plugged into the galley plug!
Regards,
Rob M.
The Pedantic Mechanic
USAussie - Downunder
-----Original Message-----
From: Matt Colie
The absolutely best instrument to set up an Onan is a Kill-a-Watt. Version does not matter. Put the unit in the coach, fire it up,
throw an extension cord out a window in the port (left) side and plug it in there. Then, fire up the A/C, the microwave and the
water heater and now you can check frequency and line voltage and decide which you like more.
This is from a guy with 2ea Fluke 77, an 87, a multi-hundred MHz counter and a whole bunch of other tech stuff. He uses the 30$
thing to set up the Onan.
Now, make arrangements with Jim to get the bad field re-wound.
Matt -
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http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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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