Onan voltage regulater

rseibenick · 05-04-2017, 06:14 PM

Anyone know where I can got a Onan generator voltage regulator Part # 305-0826 at a good price. Thanks.

voltdr · 05-04-2017, 06:43 PM

Try flight systems

http://www.flightsystems.com/p-ONAN-...FUMcaQod0RYDpQ

Mike Pearson · 05-04-2017, 06:44 PM

There is lots of Onan parts available on e bay. Just doe a search for the part number

rseibenick · 05-04-2017, 07:11 PM

Thanks for the information. Will check them out.

Rich Biebel · 05-04-2017, 08:20 PM

"Parts for Techs" is a website that sells what you are looking for. Just Google search that and it should get you there. Flight Systems is also a good source. ASAP is Parts for Techs.....same place. I buy parts from both sometimes. That regulator is one of the more expensive units and is externally mounted. Probably a Marquis.....

Hacksaw · 05-04-2017, 08:43 PM

I also have used ASAP / Parts for Techs. Good service and reasonably priced.

ss3011 · 05-04-2017, 08:57 PM

Wide range of prices, but there is one on eBay for $222.00 . There is a good set of instructions that I saw when I Googled that part number , to test the old one to make sure its bad . Doesn't look like a very robust connector , might try cleaning it good and retrying it . Good luck !

rseibenick · 05-05-2017, 10:20 AM

Yes its a Marquis 111. will try cleaning the contacts first and see.

Rich Biebel · 05-05-2017, 12:00 PM

Won't help. It's never been an issue. First thing to check on those is always brushes, and slip rings. The brushes ride on those slip rings. Copper surfaces on the rotor. A normal ohm reading right at the back of the brushes with at least one wire pulled off........about 20-30 ohms. If brushes and slips are good you can pull wires off brushes, tape them up and connect a 12volt battery or better yet a 24 volt supply right on there and run it. Output should be produced although it will be low. That test will be proving the rotor and stator are good. 30 to 60 volts D.C. is the normal range there. Marquis' are complex units with electronic governors. Harder to diagnose than manual governors. Pretty easy for me though.

rseibenick · 05-05-2017, 02:25 PM

Rich, had the unit checked out and they said it was a bad voltage regulator. Slip rings and brushes good. Will try to clean the connectors and try that if not will change out the regulator.

05-04-2017, 06:14 PM	#1
rseibenick Member Join Date: Dec 2002 Posts: 160 Likes: 24 Liked 20 Times in 7 Posts	Onan voltage regulater Anyone know where I can got a Onan generator voltage regulator Part # 305-0826 at a good price. Thanks.

05-04-2017, 06:43 PM	#2
voltdr Senior Member Join Date: Jan 2008 Location: Texas Posts: 706 Likes: 77 Liked 100 Times in 51 Posts	Re: Onan voltage regulater Try flight systems http://www.flightsystems.com/p-ONAN-...FUMcaQod0RYDpQ Last edited by voltdr; 05-04-2017 at 06:46 PM. Reason: better link

05-04-2017, 06:44 PM	#3
Mike Pearson VIP Member Join Date: Mar 2007 Posts: 2,449 Likes: 615 Liked 1,926 Times in 579 Posts	Re: Onan voltage regulater There is lots of Onan parts available on e bay. Just doe a search for the part number __________________ Mike Pearson 2485 SS

05-04-2017, 07:11 PM	#4
rseibenick Member Join Date: Dec 2002 Posts: 160 Likes: 24 Liked 20 Times in 7 Posts	Re: Onan voltage regulater Thanks for the information. Will check them out.

05-04-2017, 08:20 PM	#5
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,314 Likes: 25 Liked 544 Times in 213 Posts	Re: Onan voltage regulater "Parts for Techs" is a website that sells what you are looking for. Just Google search that and it should get you there. Flight Systems is also a good source. ASAP is Parts for Techs.....same place. I buy parts from both sometimes. That regulator is one of the more expensive units and is externally mounted. Probably a Marquis..... __________________ Rich Biebel S/C 1479 Stock 147R Last edited by Rich Biebel; 05-04-2017 at 08:22 PM.

05-04-2017, 08:43 PM	#6
Hacksaw Senior Member Join Date: Sep 2016 Posts: 882 Likes: 206 Liked 310 Times in 174 Posts	Re: Onan voltage regulater I also have used ASAP / Parts for Techs. Good service and reasonably priced.

05-04-2017, 08:57 PM	#7
ss3011 Senior Member Join Date: Feb 2002 Location: Southeast Michigan Posts: 909 Likes: 70 Liked 239 Times in 114 Posts	Re: Onan voltage regulater Wide range of prices, but there is one on eBay for $222.00 . There is a good set of instructions that I saw when I Googled that part number , to test the old one to make sure its bad . Doesn't look like a very robust connector , might try cleaning it good and retrying it . Good luck !

05-05-2017, 10:20 AM	#8
rseibenick Member Join Date: Dec 2002 Posts: 160 Likes: 24 Liked 20 Times in 7 Posts	Re: Onan voltage regulater Yes its a Marquis 111. will try cleaning the contacts first and see.

05-05-2017, 12:00 PM	#9
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,314 Likes: 25 Liked 544 Times in 213 Posts	Re: Onan voltage regulater Won't help. It's never been an issue. First thing to check on those is always brushes, and slip rings. The brushes ride on those slip rings. Copper surfaces on the rotor. A normal ohm reading right at the back of the brushes with at least one wire pulled off........about 20-30 ohms. If brushes and slips are good you can pull wires off brushes, tape them up and connect a 12volt battery or better yet a 24 volt supply right on there and run it. Output should be produced although it will be low. That test will be proving the rotor and stator are good. 30 to 60 volts D.C. is the normal range there. Marquis' are complex units with electronic governors. Harder to diagnose than manual governors. Pretty easy for me though. __________________ Rich Biebel S/C 1479 Stock 147R

05-05-2017, 02:25 PM	#10
rseibenick Member Join Date: Dec 2002 Posts: 160 Likes: 24 Liked 20 Times in 7 Posts	Re: Onan voltage regulater Rich, had the unit checked out and they said it was a bad voltage regulator. Slip rings and brushes good. Will try to clean the connectors and try that if not will change out the regulator.