Rectifer/Regulator Low - Reg.


Information and questions on GL1100 Goldwings (1980-1983)
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fischerj
Posts: 37
Joined: Tue Aug 24, 2010 12:44 pm
Location: Baton Rouge, LA
Motorcycle: 1983 GL1100 A Aspencade

Rectifer/Regulator Low - Reg.

Postby fischerj » Sat Oct 16, 2010 8:08 pm



I got the battery/system checked and the Running test results indicated Low - Reg.
The battery was 76% charged, the diodes are good.

The symptoms are that the voltage indicator is below 12. Varying between 8 and 11.

Does mean that the Rectifer/Regulator needs to be replaced.

Thanks Alot.



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WingAdmin
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Re: Rectifer/Regulator Low - Reg.

Postby WingAdmin » Mon Oct 18, 2010 10:50 am

Have you checked first to ensure that the stator is putting out the correct voltage? At what engine speed are you measuring it? The stator will not put out enough power at idle to run the bike AND charge the battery - at idle, you are actually drawing down the battery, which is why your voltmeter will show low.

Incidentally, are you measuring your voltage using the dash voltmeter (which is quite inaccurate), or an external DMM (hook it to the battery)?

fischerj
Posts: 37
Joined: Tue Aug 24, 2010 12:44 pm
Location: Baton Rouge, LA
Motorcycle: 1983 GL1100 A Aspencade

Re: Rectifer/Regulator Low - Reg.

Postby fischerj » Mon Oct 18, 2010 12:44 pm

I did check the ohm values on the stator and they all have continuity. I'm not sure how to check the voltage. The manual doesn't have a test for the voltage except across the battery. I did perform the test across the battery and at the time it was 11 volts and when the bike was started, the voltage didn't increase.

I also checked the diodes on the regulator/rectifier using the test from the manual and the reverse direction was correct, but the normal direction didn't give a reading, meaning to me that there was infinite resistance, which points to the RR needing to be replaced

Also, the three yellow wires coming from the alternator were rusted and looked like they had traces of being burned, so I replaced the connections

fischerj
Posts: 37
Joined: Tue Aug 24, 2010 12:44 pm
Location: Baton Rouge, LA
Motorcycle: 1983 GL1100 A Aspencade

Re: Rectifer/Regulator Low - Reg.

Postby fischerj » Mon Oct 18, 2010 1:20 pm

I found a test for the stator. I'll try that. Thanks

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MSGT-R
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Re: Rectifer/Regulator Low - Reg.

Postby MSGT-R » Mon Oct 18, 2010 1:26 pm

All three wires have continuity and are isolated from ground.
All connections clean and tight.
Battery full & showing at least 2.1 volts per cell.

Engine running @ 4,000 rpm should show somewhere between 13-15 volts depending upon how much is sucked out of the system from starting. A fully charged battery should then have the system running at 13 volts . Anything less (or way more than 15V) than this is trouble in the regulator, even if the diodes are fine.


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