Question about 1980 Honda CX 500 A

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Charging system on my honda cx500c is not keeping the battery charged. I suspect I have a stator problem because they have a history of getting too hot and failing. what do you think?

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Hi and welcome to FixYa,

Initially, would have to agree, these bikes are notorious for stator problems. The early models actually have 3 windings to my knowledge.

Good luck and Thank you for using FixYa. Happy Holidays.

Posted on Dec 14, 2008

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Posted on Jan 02, 2017

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99 Honda Valkyrie Changed alternator , new battery on the bike took it out and it still not charging


Hi, David the voltage regulator is the #1 cause of faulty charging systems before testing any electrical component in the Charging System Circuit it is "IMPERATIVE" that you have a fully charged battery of 12.5 volts or more and be able to pass a proper "LOAD" test because your battery may have 12.5 volts or more but little or zero amps causing the battery to be faulty and must be replaced, especially "AGM" batteries.
1. Battery Test: The battery needs to be a fully charged and load tested to ensure proper readings, connections need to be clean and tight. If you are not working with a fully charged and functional battery, all other voltage tests will be incorrect. Standing battery Voltage should be 12.5-13.2 DCV.
2. Charging System Voltage Test: Start motorcycle, measure DC volts across the battery terminals you should have a reading of approximately 13.2-15 DC Volts.
3. Check Connections/Wires: Inspect the regulator/stator plug, and check the battery terminals for connection/corrosion. If everything seems to be in order, move on to number 4 below to determine if there's a failed component.
4. Stator Checks/Rotor Check: Each of the following tests isolates the Stator & Rotor. If AC Output test Fails and Resistance Check, and Stator IB Test Pass then Rotor is at fault (Pull Primary covers and inspect rotor for damage).
5. AC Output Check:
Unplug the regulator plug from the stator
Start motorcycle and change Voltmeter to AC volts.
Probe both stator wires with your meter lead.
The motorcycle should be putting out approximately 18-20 ACV per 1,000 rpm. Reading will vary depending on system, check service manual specification
Generic Specs:
22 amp system produces about 19-26 VAC per 1,000 rpm
32 amp system produces about 16-20 VAC per 1,000 rpm
45 amp system produces about 19-26 VAC per 1,000 rpm
Stator Resistance Check:
Switch your multimeter to Ohm x 1 scale.
Probe each stator wires with meter leads and check resistance on the meter.
Resistance should be in the range of 0.1-0.5 Ohms. Reading will vary depending on system, check service manual for specification
Generic Specs:
22 amp system produces about 0.2 to 0.4 ohms
32 amp system produces about 0.1 to 0.2 ohms
45 amp system produces about 0.1 to 0.2 ohms
Stator IB test or Ground Check:
Switch your multimeter to Ohm x 1 scale.
Probe each stator wire with your positive lead on the multimeter and the negative to ground.
There should be no continuity to ground on either wire.
If there is continuity to ground your stator is shorted to ground.
5. Regulator Test: Each of the following tests isolates the regulator only, so if any of these tests fail, the regulator is at fault.
Identifying Wires:
Battery Charge Lead- Wire going from regulator to battery positive.
AC output leads- Wires coming from the Stator to the regulator.
Ground- Wire from Regulator to ground or regulator may be grounded via the physical bolting to chassis.
Regulator Ground Test: Ensure the regulator body is grounded or grounding wire is fastened tightly to a good ground (you should verify this by checking continuity from regulator body to chassis ground).
Fwd/Reverse Bias Test/Diode Test: This check is testing the Diode function to ensure it is regulating the AC current for the stator into DC Current.
Switch multimeter to Diode Scale.
Place your Multimeter positive lead on each AC output wire.
Place your multimeter negative lead on the battery Charge wire.
The meter should read voltage typically around .5 volts.
Next, switch your multimeter leads putting the negative lead on the AC output wires and the Positive lead on the Battery Charge Wire.
The reading should be Infinite.
With your meter on the same setting, place your multimeter positive lead on the regulator ground wire or to the regulator directly, and then place your meter negative lead on the AC output leads.
The meter should read voltage typically around .5 volts.
Next, switch your multimeter leads putting the negative lead on the regulator ground and the Positive lead on the AC output wires.
The reading should be Infinite.
Note: Below is a table to show the readings:
Positive Lead Negative Lead Reading
AC output 1 Battery charge lead Voltage
AC output 2 Battery Charge Lead Voltage
Battery charge lead AC output 1 ?
Battery charge lead AC output 2 ?
Ground AC output 1 Voltage
Ground AC output 2 Voltage
AC output 1 Ground ?
AC output 2 Ground ?
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Another Battery charging question
http://www.jetav8r.com/Vision/Stator/fault_finding_by_www.electrosport.com.pdf
HONDA VALKYRIE RUNE NXR 1800 WORKSHOP SERVICE REPAIR MANUAL Download... $10 very cheap
http://www.partsfish.com/page/oem-parts-for-honda
http://www.valkyrieriders.com/ShopTalk/ValkMaintManAcrobatPDF.pdf
http://mybikemanuals.com/honda

Apr 09, 2017 | 1999 Honda F6 C Valkyrie

1 Answer

Hi everyone... need some help on my honda xr200.... i just wana ask if the starter relay has something to do with the charging of the battery? what is the normal or ideal stator output in ohmz??


The stator has no output. The stator has to have continuity to all legs without short to ground. Best bet, check voltage at battery when not running. Check again when running. Voltage should be at least 1-1.5 volts higher when running. If not you should start at the battery and work your way to the alternator. If all wiring is tight and not frayed or broken, check each individual part in the charging system.

Apr 15, 2015 | Honda Motorcycles

2 Answers

Why doesn't my 02 Honda cbr keep charge.


You could load test the battery ,to see if its good ,if it is good or new,it may be your stator,or charging system.You could check the voltage of the battery while its running to see if its charging. I found ,they dont like not being started,or sitting for awhile. Ive installed a battery tender ,that keeps my battery fully charged even if you let the bike sit for extended periods of time. Its a very low amp charging system ,then turns itself on and off,to keep your battery fully charged. Sometimes there called Float chargers too.

Feb 09, 2012 | 2001 Honda CBR 929 RR Fireblade

2 Answers

Bike wont start unless jumped and as soon as you take the jumper cables off it stalls and wont start


Sounds like you have a bad battery. Have you taken it off and tried to trickle charge it? Make sure you test it and watch to see how fast the voltage is dropping. I suspect though, that the batter is bad or your charging system isn't giving it any juice. If you charge the battery, it should still run for 20-30 minutes even if the charging system is bad. That way you know if it's the battery or the charging system. Good luck!

Jul 30, 2011 | 1996 kawasaki VN 1500 Vulcan Classic

1 Answer

My battery will not charge on my honda GL 1200


If the battery is not charging could be stator or a cell broken down in the battery. Take out battery and try to charge it out of the bike on a trickle charger. If it wont charge in the bike there is a problem with the charging system and may be the stator or regulator.

Aug 16, 2010 | 1985 Honda GL 1200 Interstate Gold Wing

1 Answer

KAWASAKI VULCAN 1500 CHARGING PROBLEM


If you are getting 13volt output and it revs and gets 14.5volts it would appear to be charging. As you would get a drop in voltage if it were not. Stator is there for working. Check your voltage relay as it may be sticking which would cause it to run on system and not be sending charge to battery. Poor ground would also keep battery from being properly charged

Mar 30, 2010 | 1996 kawasaki VN 1500 Vulcan Classic

2 Answers

I have a 1980 suzuki 850 gs and its not charging the battery properly what should i do and where is the charging system located on the engine


As suggested, check the voltage with the engine running accross the battery. If its below 14 volts you have an issue with the stator windings/regulator/rectifier/wiring.
Do the cheapest thing first and clean up all electrical connections, esp the earths.
A manual will tell you how to test the charging system, but the Suzuki GS range has always had charging issues.
The simplist method is to fit the combined reg/rectifier unit from a Honda CB250/400 Superdream.
Always keep your engine oil topped to the max mark, as this cools the stator.
Dont leave this, it is not unknown for the entire system to fail including the CDI if left unchecked.

Mar 21, 2010 | 1980 Suzuki GS 750 L

2 Answers

The charging system is not working properly. With


Chk the charging voltage at the battery posts. Should be between 13.6 to 14.2 The lower the voltage the hugher the amps. if at 13,6 it is charging heavy. It may not be your charging system. If it shows 12 volts it is charging max output, and at 15 it isn't doing anything.. I would put my money on the battery being no good..

Sep 15, 2009 | 2007 Suzuki Boulevard

2 Answers

I have a 1980 Honda CX500c that was given to me. It is not charging correctly. I keep having to remove the battery and put it on a trickle charger. When I got the bike, I was told that the voltage...


Check to see if your battery is any good. A battery that is no good, will not keep a charge.
That would be the next step, and most likley your problem if the battery froze, or the bike sat for a long time.

Mar 08, 2009 | 1980 Honda CX 500 A

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