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Onan [message #284789] Thu, 13 August 2015 12:09 Go to next message
Bill Shourt is currently offline  Bill Shourt   United States
Messages: 33
Registered: January 2005
Location: Sherman Oaks ,Ca
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Member
Onan starter keep running after start switch is off. If i pull start wire off of starter solenoid it disengages. I just installed a new dino board from Jim K with same results as old board. Usually after it starts once and I disconnect starter wire it will it will start after that without the starter staying engaged. K1 starter solenoid seems like likely suspect. Comments? Is this something I can get locally? Leaving on a trip this weekend and would love to control the Onan. 21 trouble free years, I love my Onan. Thanks for any ideas.

Bill and Michele Shourt
78 Kingsley, origional
Re: [GMCnet] Onan [message #284791 is a reply to message #284789] Thu, 13 August 2015 12:13 Go to previous messageGo to next message
James Hupy is currently offline  James Hupy   United States
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Inside the coach, or on the control board? Or, is it the same? Rocker
switches are known fail points.
Jim Hupy
Salem, Oregon
78 GMC ROYALE 403
On Aug 13, 2015 10:09 AM, "Bill Shourt" wrote:

> Onan starter keep running after start switch is off. If i pull start wire
> off of starter solenoid it disengages. I just installed a new dino board
> from Jim K with same results as old board. Usually after it starts once
> and I disconnect starter wire it will it will start after that without the
> starter staying engaged. K1 starter solenoid seems like likely suspect.
> Comments? Is this something I can get locally? Leaving on a trip this
> weekend and would love to control the Onan. 21 trouble free years, I love
> my Onan. Thanks for any ideas.
> --
> Bill and Michele Shourt
> 78 Kingsley, origional
>
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> GMCnet mailing list
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Re: [GMCnet] Onan [message #284792 is a reply to message #284791] Thu, 13 August 2015 12:28 Go to previous messageGo to next message
tphipps is currently offline  tphipps   United States
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Registered: August 2004
Location: Spanish Fort, AL
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Try disconnecting the remote switch, at the Onan. A real PITA, but may isolate or help eliminate one potential failure point.
Tom, MS II


2012 Phoenix Cruiser model 2552 KA4CSG
Re: Onan [message #284794 is a reply to message #284789] Thu, 13 August 2015 12:57 Go to previous messageGo to next message
Bill Shourt is currently offline  Bill Shourt   United States
Messages: 33
Registered: January 2005
Location: Sherman Oaks ,Ca
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When it hangs up it will do it on the remote switch or the one on the Onan. When it is working it works on either switch without hanging up.

Bill and Michele Shourt
78 Kingsley, origional
Re: Onan [message #284795 is a reply to message #284789] Thu, 13 August 2015 13:13 Go to previous messageGo to next message
77Royale   United States
Messages: 461
Registered: June 2014
Location: Mid Michigan
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Senior Member
Is it possible that the starter shaft needs lubrication? where it throws the starter gear out to meet the flywheel. Mine had what seemed like it was not dis engaging. I took the starter off to replace the broken bracket and it was very dry and hanging up.

I also noticed checked and lubed it when I had the fan cover off the flywheel. I was able to engage the starter from the side of the onan and watch it engage and dis engage the flywheel. I was just bumping the rocker switch to verify the action of the starter gear.

Since I lubricated it the starter throws the gear out and retracts very well taking care of that issue.


77 Royale, Rear Dry Bath. 403, 3.55 Final Drive, Lenzi goodies, Patterson carb and dizzy. Mid Michigan
Re: Onan [message #284798 is a reply to message #284789] Thu, 13 August 2015 14:55 Go to previous messageGo to next message
Bullitthead is currently offline  Bullitthead   United States
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Check for a positive start signal at the starter solenoid before you pull the wire off. If it is getting positive voltage, then step back to the K1 relay and see if the start signal wire on THAT solenoid is getting grounded. If it is not getting grounded then there should not be positive voltage present on the wire going to the starter solenoid. If there is positive voltage on both of the terminals of K1 with no ground signal to engage it, then that relay/solenoid is fused and will have to be replaced. Smack it with a screwdriver handle and see if the starter stops. K1 looks just like an old Ford starter relay with the ignition terminal for extra ignition power when starting, BUT IT IS NOT! Shocked Get the relay from Applied or another vendor that has Onan parts. It is a common-positive relay that requires a ground to energize it and has the extra terminal for ignition that gets positive voltage during cranking.

If the starter is stuck engaged and there is no voltage (use a test light for this, not a meter) at the trigger terminal, then you need to make sure the mounting is solid. Several posts have related a stuck starter to a broken starter bracket. Perhaps when you pull the wire off you are actually unloading a binding starter gear and then it lets go. If it's broken or bent, check the mounts for the generator to see if they have sagged and are making the starter hit the mounting cage.


Terry Kelpien ASE Master Technician 73 Glacier 260 Smithfield, Va.
Re: [GMCnet] Onan [message #284806 is a reply to message #284798] Thu, 13 August 2015 16:18 Go to previous messageGo to next message
William Shourt is currently offline  William Shourt   United States
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Registered: August 2015
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Thanks everyone, some good things to try when it cools down

Sent from my iPad

> On Aug 13, 2015, at 12:55 PM, Terry wrote:
>
> Check for a positive start signal at the starter solenoid before you pull the wire off. If it is getting positive voltage, then step back to the K1
> relay and see if the start signal wire on THAT solenoid is getting grounded. If it is not getting grounded then there should not be positive voltage
> present on the wire going to the starter solenoid. If there is positive voltage on both of the terminals of K1 with no ground signal to engage it,
> then that relay/solenoid is fused and will have to be replaced. Smack it with a screwdriver handle and see if the starter stops. K1 looks just like an
> old Ford starter relay with the ignition terminal for extra ignition power when starting, BUT IT IS NOT! 8o Get the relay from Applied or another
> vendor that has Onan parts. It is a common-positive relay that requires a ground to energize it and has the extra terminal for ignition that gets
> positive voltage during cranking.
>
> If the starter is stuck engaged and there is no voltage (use a test light for this, not a meter) at the trigger terminal, then you need to make sure
> the mounting is solid. Several posts have related a stuck starter to a broken starter bracket. Perhaps when you pull the wire off you are actually
> unloading a binding starter gear and then it lets go. If it's broken or bent, check the mounts for the generator to see if they have sagged and are
> making the starter hit the mounting cage.
>
> --
> Terry Kelpien
> ASE Master Technician
> 73 Glacier 260
> Smithfield, Va.
>
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> GMCnet mailing list
> Unsubscribe or Change List Options:
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Re: [GMCnet] Onan [message #285342 is a reply to message #284789] Tue, 18 August 2015 21:24 Go to previous messageGo to next message
Brian Waddell is currently offline  Brian Waddell   United States
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Registered: March 2010
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Senior Member
my onan would not shut off remotey....is was the wire junctions behind and underneath onan...brian 77 ele 455

> Date: Thu, 13 Aug 2015 11:09:17 -0600
> To: gmclist@list.gmcnet.org
> From: bshourt@sbcglobal.net
> Subject: [GMCnet] Onan
>
> Onan starter keep running after start switch is off. If i pull start wire off of starter solenoid it disengages. I just installed a new dino board
> from Jim K with same results as old board. Usually after it starts once and I disconnect starter wire it will it will start after that without the
> starter staying engaged. K1 starter solenoid seems like likely suspect. Comments? Is this something I can get locally? Leaving on a trip this
> weekend and would love to control the Onan. 21 trouble free years, I love my Onan. Thanks for any ideas.
> --
> Bill and Michele Shourt
> 78 Kingsley, origional
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org

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Re: [GMCnet] Onan [message #285362 is a reply to message #285342] Wed, 19 August 2015 08:40 Go to previous messageGo to next message
Matt Colie is currently offline  Matt Colie   United States
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Registered: March 2007
Location: S.E. Michigan
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Senior Member
Brian,

Yes, the group of 4 control wires are connected to the coach set with a cheap connector that is usually under the Onan until it is pulled out. That connector is the cause of most of the Oana's "remote" problems.

Matt
Brian Waddell wrote on Tue, 18 August 2015 22:24
my onan would not shut off remotey....is was the wire junctions behind and underneath onan...brian 77 ele 455



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
Re: [GMCnet] Onan [message #285370 is a reply to message #285362] Wed, 19 August 2015 09:24 Go to previous message
Mr ERFisher is currently offline  Mr ERFisher   United States
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Registered: August 2005
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Senior Member
Look here
http://www.gmcmhphotos.com/photos/onan-bridge-rectifier-replacement/p11111.html



On Wednesday, August 19, 2015, Matt Colie wrote:

> Brian,
>
> Yes, the group of 4 control wires are connected to the coach set with a
> cheap connector that is usually under the Onan until it is pulled out. That
> connector is the cause of most of the Oana's "remote" problems.
>
> Matt
> Brian Waddell wrote on Tue, 18 August 2015 22:24
>> my onan would not shut off remotey....is was the wire junctions behind
> and underneath onan...brian 77 ele 455
>
>
> --
> 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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> Unsubscribe or Change List Options:
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>


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