Bayou 300 - Charging System Question

SammyK · 05-11-2008

I have a 1995 Bayou 300 4x4. The charging system seems to be delivering too much voltage and causing the battery to boil over. I put a volt-meter on my battery terminals when the quad was running and got about 16.5v at idle and around 17.4v when revved up. According to the Haynes manual the maximum voltage here should be 15.0v.

I'm thinking that I need a new voltage regulator/rectifier. Has anyone here encountered a similar problem? Does this diagnosis sound correct, or could something else be causing this problem?

Any input will be greatly appreciated. Thanks!

86klf300guy · 05-12-2008

hello sammy well the diagnoises sounds right ,probably have a bad regulater or a ground issue on the regulater .but i think you found you have a bad voltage regulater let us know how it comes out when you replace the regulater -corey-

mcarr1 · 05-17-2008

that does sound correct

RCW · 05-17-2008

If the battery is partially sulphated it will cause the charging system to charge up over 18 volts, and boil the water out of the battery. So make sure you have a good battery before replacing the regulator or the problem will still be there $120 later.

SammyK · 05-18-2008

Well, I installed a new voltage regulator and the problem has been solved. My thanks to all of you for your input. This forum is a great resource!

Sam

86klf300guy · 05-18-2008

hey good to hear that took care of it your welcome and 1 more thing did you apply a little die electric grease to your voltage reg connecter to prevent corrosion and water intrusin it would be safe to do that being they are not cheap things to replace i bet -corey-

SammyK · 05-19-2008

Thanks for the tip about the di-electric grease. That's a good idea and one I'm going to follow up on.

86klf300guy · 05-19-2008

yeah if you can do it to all your connecters to prevent corroision in side and prevent future isses -corey-

05-11-2008	#1 (permalink)
SammyK Newbie Join Date: Mar 2008 Posts: 6	Bayou 300 - Charging System Question I have a 1995 Bayou 300 4x4. The charging system seems to be delivering too much voltage and causing the battery to boil over. I put a volt-meter on my battery terminals when the quad was running and got about 16.5v at idle and around 17.4v when revved up. According to the Haynes manual the maximum voltage here should be 15.0v. I'm thinking that I need a new voltage regulator/rectifier. Has anyone here encountered a similar problem? Does this diagnosis sound correct, or could something else be causing this problem? Any input will be greatly appreciated. Thanks!

05-17-2008	#4 (permalink)
RCW Can't find time to ride BTK Expert Join Date: Nov 2007 Location: Oregon, Chile, Alberta, Texas Posts: 613	If the battery is partially sulphated it will cause the charging system to charge up over 18 volts, and boil the water out of the battery. So make sure you have a good battery before replacing the regulator or the problem will still be there $120 later. __________________ 2008 3010 Trans4X4 Diesel Mule 2008 JD XUV 850 Diesel 1979 XS650 Yamaha New DR-Z400S

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05-12-2008	#2 (permalink)
86klf300guy Sit speling cheker BTK Expert Join Date: Feb 2008 Location: some where in ohio Posts: 400	hello sammy well the diagnoises sounds right ,probably have a bad regulater or a ground issue on the regulater .but i think you found you have a bad voltage regulater let us know how it comes out when you replace the regulater -corey-

05-17-2008	#3 (permalink)
mcarr1 Newbie Join Date: May 2008 Location: michigan Posts: 9	that does sound correct

05-18-2008	#5 (permalink)
SammyK Newbie Join Date: Mar 2008 Posts: 6	Well, I installed a new voltage regulator and the problem has been solved. My thanks to all of you for your input. This forum is a great resource! Sam

05-18-2008	#6 (permalink)
86klf300guy Sit speling cheker BTK Expert Join Date: Feb 2008 Location: some where in ohio Posts: 400	hey good to hear that took care of it your welcome and 1 more thing did you apply a little die electric grease to your voltage reg connecter to prevent corrosion and water intrusin it would be safe to do that being they are not cheap things to replace i bet -corey-

05-19-2008	#7 (permalink)
SammyK Newbie Join Date: Mar 2008 Posts: 6	Thanks for the tip about the di-electric grease. That's a good idea and one I'm going to follow up on.

05-19-2008	#8 (permalink)
86klf300guy Sit speling cheker BTK Expert Join Date: Feb 2008 Location: some where in ohio Posts: 400	yeah if you can do it to all your connecters to prevent corroision in side and prevent future isses -corey-

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