| Generator Start/Stop Switch [message #284220] |
Fri, 07 August 2015 15:00  |
Gary Carlton
Messages: 59
Registered: February 2014
Karma: 0
|
Member |
|
|
Anyone know what a part number and source may be for the generator start/stop switch on the interior control panel? The Start side of the switch in mine is shorting itself and once pressed will not release and continues crank the starter. I do not want to have to run outside to the switch on the generator itself to get it to Stop anymore. I have found plenty of On/Off/On switches but none the same physical size. Before I break out the tools to enlarge to hole, I thought it would be worthwhile to ask the masses.
Thanks in advance for the time.
gary
'78 Royale, "Road Grub"
Bellingham, WA
[Updated on: Fri, 07 August 2015 15:00] Report message to a moderator |
|
|
|
| Re: Generator Start/Stop Switch [message #284221 is a reply to message #284220] |
Fri, 07 August 2015 15:33  |
Rick Williams
Messages: 256
Registered: July 2004
Karma: 0
|
Senior Member |
|
|
Gary
The switch may not be bad. Have you removed it from the circuit and tested it to see if it actually does stay "shorted" when you release it? Other problems can cause your issue.
Rick
Rick Williams
Bliss, Michigan
1978 Eleganza II
|
|
|
|
| Re: Generator Start/Stop Switch [message #284227 is a reply to message #284220] |
Fri, 07 August 2015 17:19 |
Gary Carlton
Messages: 59
Registered: February 2014
Karma: 0
|
Member |
|
|
I have pulled it and attempted to clean/lubricate the contacts. There is a definite 'catch' and physical resistance in moving the switch to the ON position. I got it working for a couple of weeks but not anymore.
'78 Royale, "Road Grub"
Bellingham, WA
|
|
|
|
| Re: Generator Start/Stop Switch [message #284229 is a reply to message #284220] |
Fri, 07 August 2015 17:36 |
Steve
Messages: 506
Registered: September 2013
Location: East Greenville, Pa
Karma: 1
|
Senior Member |
|
|
It may or may not be the switch. It seems to be a fairly common problem that the starter stays engaged whether started from in or outside. I still have not been able to figure mine out. I don't know if it is starter, circuit board, relay or other. Right now I am just happy it runs well and makes electricity. Going to order the Petronix electronic ignition from Gary Bovee soon. I love that you can leave the points in place and switch back easily if needed.
I have swapped starters and circuit boards and still have the starter fail to disengage. I'm not sure what to try next. Planning more research.
1978 GMC Royal
Eastern Pennslyvania
1968 Chevrolet C20 396 Camper Special
1969 Chevrolet C20 Camper Special
1985 Buick Electra Park Avenue
1992 Camaro 25th Anniversary Heretage Edition Black
|
|
|
|
| Re: [GMCnet] Generator Start/Stop Switch [message #284231 is a reply to message #284229] |
Fri, 07 August 2015 17:58 |
Jim Miller
Messages: 501
Registered: March 2008
Karma: 10
|
Senior Member |
|
|
On Aug 7, 2015, at 6:36 PM, Steve Adams wrote:
>
> I have swapped starters and circuit boards and still have the starter fail to disengage.
It is easy enough to isolate whether it is a problem with the starter or a problem in the control system. While it is acting up just pull the small wire with the spade lug off the starter solenoid and see if it disengages.
If the starter stays engaged after pulling off the wire then your problem is in the starter.
If it disengages then you have a controls problem. The control board is the first culprit to check and the second is the slave relay mounted directly below the control board - it acts as an intermediate relay between the control board and the starter to prevent the high-voltage flyback pulse from the starter solenoid from cooking the small relay on the control board.
--Jim "saving the lives of Onans...one unit at a time" Miller
1977 Eleganza II
1977 Royale
Hamilton, OH
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Jim Miller
1977 Eleganza II
1977 Royale
Hamilton, OH
|
|
|
|
|
|
| Re: Generator Start/Stop Switch [message #284239 is a reply to message #284220] |
Fri, 07 August 2015 18:57 |
Gary Carlton
Messages: 59
Registered: February 2014
Karma: 0
|
Member |
|
|
I will give these options a run. I am still feeling that it is the switch as I do not have the issue when starting the generator from the control board on the unit itself. Thank you all for your replies.
'78 Royale, "Road Grub"
Bellingham, WA
|
|
|
|
| Re: Generator Start/Stop Switch [message #284267 is a reply to message #284220] |
Sat, 08 August 2015 10:39 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
|
Senior Member |
|
|
Remove the wires from the top row of the control board. This takes remote out of circuit. You can then test the gen locally for start -run -stop and meter remote ground wire to remote start and remote stop to test wiring and switch If flakey remove switch and test switch and wiring separately til you isolate. Push in terminals at board could be dirty as well. As far as solenoid I broke the rules and used a very light film of Synpower on moving and sliding parts. Fixed.
John Lebetski
Woodstock, IL
77 Eleganza II
|
|
|
|
|
|
|
|
| Re: [GMCnet] Generator Start/Stop Switch [message #284421 is a reply to message #284231] |
Sun, 09 August 2015 16:41 |
Steve
Messages: 506
Registered: September 2013
Location: East Greenville, Pa
Karma: 1
|
Senior Member |
|
|
Jim Miller wrote on Fri, 07 August 2015 18:58On Aug 7, 2015, at 6:36 PM, Steve Adams wrote:
>
> I have swapped starters and circuit boards and still have the starter fail to disengage.
It is easy enough to isolate whether it is a problem with the starter or a problem in the control system. While it is acting up just pull the small wire with the spade lug off the starter solenoid and see if it disengages.
If the starter stays engaged after pulling off the wire then your problem is in the starter.
If it disengages then you have a controls problem. The control board is the first culprit to check and the second is the slave relay mounted directly below the control board - it acts as an intermediate relay between the control board and the starter to prevent the high-voltage flyback pulse from the starter solenoid from cooking the small relay on the control board.
--Jim "saving the lives of Onans...one unit at a time" Miller
1977 Eleganza II
1977 Royale
Hamilton, OH
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Jim, Thanks for the trouble shooting tip. I guess I should have known that. I have been pulling the wire off the solenoid spade when the starter will not release. That always does the trick. I am going to swap out the relay under the board that you mentioned. I have three original Onan circuit boards and I have swapped them around but not the relay.
1978 GMC Royal
Eastern Pennslyvania
1968 Chevrolet C20 396 Camper Special
1969 Chevrolet C20 Camper Special
1985 Buick Electra Park Avenue
1992 Camaro 25th Anniversary Heretage Edition Black
|
|
|
|
| Re: [GMCnet] Generator Start/Stop Switch [message #284425 is a reply to message #284421] |
Sun, 09 August 2015 17:39 |
Jim Miller
Messages: 501
Registered: March 2008
Karma: 10
|
Senior Member |
|
|
> Jim, Thanks for the trouble shooting tip. I guess I should have known that. I have been pulling the wire off the solenoid spade when the starter will
> not release. That always does the trick. I am going to swap out the relay under the board that you mentioned.
Hi Steve,
Now that you know it is a controls problem rather than a starter problem you should do another step before condemning the slave solenoid. Start the machine and pull the control wire off the starter - that’ll get it to disengage so that it doesn’t get destroyed. Use a voltmeter to measure between the Onan chassis and the small control terminal that goes into the side of the slave solenoid. If you measure 12V then it is the control board that is commanding the solenoid to stay closed. If you measure 0V at the terminal then the solenoid is likely the culprit.
Those solenoids are pretty reliable so I’m betting you have a control board problem rather than a slave solenoid problem..but anything is possible and it is an easy enough thing to check.
--Jim "saving the lives of Onans...one unit at a time" Miller
1977 Eleganza II
1977 Royale
Hamilton, OH
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Jim Miller
1977 Eleganza II
1977 Royale
Hamilton, OH
|
|
|
|
|
|
| Re: Generator Start/Stop Switch [message #284509 is a reply to message #284286] |
Mon, 10 August 2015 14:19 |
Gary Carlton
Messages: 59
Registered: February 2014
Karma: 0
|
Member |
|
|
Matt Colie wrote on Sat, 08 August 2015 10:27Gary,
I was in one of Mike Thomas's parts coaches this morning and saw a cracked Onan panel with a switch still in it. We talked briefly, and he asked if I wanted to send it to you. - Sure.
If you want this, please PM me a mailing address.
Matt
Matt
Thanks for the offer. I have PM'ed you my address and I very much appreciate you thinking of me for this.
gary
'78 Royale, "Road Grub"
Bellingham, WA
|
|
|
|
| Re: [GMCnet] Generator Start/Stop Switch [message #285275 is a reply to message #284421] |
Mon, 17 August 2015 21:01 |
Brian Waddell
Messages: 409
Registered: March 2010
Karma: -4
|
Senior Member |
|
|
make sure you check a connection behind the onan wher the wires plug in to each other....you need to be under the coach and reach in behind the onan to get to this multi plug,,,my onan ran started and spopped ok afer this commection was cleaned up...brian 77 ele 455
> Date: Sun, 9 Aug 2015 15:41:08 -0600
> To: gmclist@list.gmcnet.org
> From: sjadams@ptd.net
> Subject: Re: [GMCnet] Generator Start/Stop Switch
>
> Jim Miller wrote on Fri, 07 August 2015 18:58
>> On Aug 7, 2015, at 6:36 PM, Steve Adams wrote:
>>>
>>> I have swapped starters and circuit boards and still have the starter fail to disengage.
>>
>> It is easy enough to isolate whether it is a problem with the starter or a problem in the control system. While it is acting up just pull the
>> small wire with the spade lug off the starter solenoid and see if it disengages.
>>
>> If the starter stays engaged after pulling off the wire then your problem is in the starter.
>>
>> If it disengages then you have a controls problem. The control board is the first culprit to check and the second is the slave relay mounted
>> directly below the control board - it acts as an intermediate relay between the control board and the starter to prevent the high-voltage flyback
>> pulse from the starter solenoid from cooking the small relay on the control board.
>>
>> --Jim "saving the lives of Onans...one unit at a time" Miller
>> 1977 Eleganza II
>> 1977 Royale
>> Hamilton, OH
>>
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
>
> Jim, Thanks for the trouble shooting tip. I guess I should have known that. I have been pulling the wire off the solenoid spade when the starter will
> not release. That always does the trick. I am going to swap out the relay under the board that you mentioned. I have three original Onan circuit
> boards and I have swapped them around but not the relay.
>
> --
> 1978 GMC Royal
> Eastern Pennslyvania
> 1968 Chevrolet C20 396 Camper Special
> 1969 Chevrolet C20 Camper Special
> 1985 Buick Electra Park Avenue
> 1992 Camaro 25th Anniversary Heretage Edition Black
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
|
|
|
|
| Re: [GMCnet] Generator Start/Stop Switch [message #285276 is a reply to message #285275] |
Tue, 18 August 2015 01:51 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
|
Senior Member |
|
|
I'd here
http://gmcmotorhome.info/generator.html#No
On Monday, August 17, 2015, Brian Waddell wrote:
> make sure you check a connection behind the onan wher the wires plug in to
> each other....you need to be under the coach and reach in behind the onan
> to get to this multi plug,,,my onan ran started and spopped ok afer this
> commection was cleaned up...brian 77 ele 455
>
>> Date: Sun, 9 Aug 2015 15:41:08 -0600
>> To: gmclist@list.gmcnet.org
>> From: sjadams@ptd.net
>> Subject: Re: [GMCnet] Generator Start/Stop Switch
>>
>> Jim Miller wrote on Fri, 07 August 2015 18:58
>>> On Aug 7, 2015, at 6:36 PM, Steve Adams wrote:
>>>>
>>>> I have swapped starters and circuit boards and still have the
> starter fail to disengage.
>>>
>>> It is easy enough to isolate whether it is a problem with the starter
> or a problem in the control system. While it is acting up just pull the
>>> small wire with the spade lug off the starter solenoid and see if it
> disengages.
>>>
>>> If the starter stays engaged after pulling off the wire then your
> problem is in the starter.
>>>
>>> If it disengages then you have a controls problem. The control board
> is the first culprit to check and the second is the slave relay mounted
>>> directly below the control board - it acts as an intermediate relay
> between the control board and the starter to prevent the high-voltage
> flyback
>>> pulse from the starter solenoid from cooking the small relay on the
> control board.
>>>
>>> --Jim "saving the lives of Onans...one unit at a time" Miller
>>> 1977 Eleganza II
>>> 1977 Royale
>>> Hamilton, OH
>>>
>>>
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>>
>> Jim, Thanks for the trouble shooting tip. I guess I should have known
> that. I have been pulling the wire off the solenoid spade when the starter
> will
>> not release. That always does the trick. I am going to swap out the
> relay under the board that you mentioned. I have three original Onan
> circuit
>> boards and I have swapped them around but not the relay.
>>
>> --
>> 1978 GMC Royal
>> Eastern Pennslyvania
>> 1968 Chevrolet C20 396 Camper Special
>> 1969 Chevrolet C20 Camper Special
>> 1985 Buick Electra Park Avenue
>> 1992 Camaro 25th Anniversary Heretage Edition Black
>>
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
|
|
|
|
GMCforum
Search
Help
Register
Login
Home
