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battery issue 1983 gs 650 gl

  • Thread starter Thread starter lrgguy
  • Start date Start date
Ok I start the bike up and put the digital multimeter on red on red black on black and turn the meter to dcv .. I bring the revs up to about 3000 and the reading on the meter is 11.8 !! Is my battery gone ?
 
Something isn't working right. Often it's just a corroded connection thing, at least at first.
The longer it isn't working right the more stuff in there gets cooked.

You have some reading to do…

There is a ton of information about charging systems here:

http://www.thegsresources.com/_forum/showpost.php?p=1630965&postcount=1

Posplayer has put a ton of work into making this stuff understandable for us laymen. Do the tests in The Stator Papers, you can find links to them in his signature. A simple multimeter is all you need.

Dead charging systems are a good thing, they are the number one reason for us to be able to buy these great old bikes for cheap.
 
Ok so u fully charged the battery ... and started bike up and put the multimeter red on the positive black on the ground and reved the bike up to 5000 rpm the reading I got was 16.2 volts DC .. correct me if im wrong anything higher then 15.5 volts would mean the rectifier needs replacing .????? Anything less then 14 volts would mean the alternator , or the rectifier is no good ??? .
So with me getting a reading of 16.2 volts , is this a clear indication that it is the rectifier ?? HELP !! I can take anything appart and put it back together but electricity ... volts .. current ... ummm yeah might aswell be talking to me in german !! Lol
This rectifier was replaced just before I bought the bike only one yr ago .. and I even have the receipt. ..
 
You should do the quick test but it should never go that high unless it is not regulating.
 
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So by the high number im recieving when testing the battery terminals . In your opopinion should I be ordering a new rectifier in the Am ?? This bike is my only means of transportation ...
 
No, go through all of the testing, find out where the problem lies. Have you cleaned every connector in the entire charging system yet?
 
Tom theres 5 wires .. im back at work so cant tell you the colours ... no I didnt see any markings on the rectifier ... but did call the to cycle salvage and they dont have an original suzuki rectifier but they do have an aftermarket one he sais new . That basikly is exact same as the one on my bike .. plug it right in and hook up the ground ...but for the low low price of $250 bucks
They tell me I cant just put any rectifier in cuzz pins may be set up differant ... again electrical crap isnt my area of experience !!
 
"......but for the low low price of $250 bucks "

deals like that are no brainers- ask them if it comes with entire bike!

You need to do posplayr's tests to check entire system.
You'll probably want a SH-775 - this is a series R/R- ATV polaris part
Polaris p/n 4012941; In states these go for about $75 shipped. Honestly this is best way to go (assuming you want to keep this bike)

Ignore any and all nonsense about monster mosfet R/R 's- these bikes have a small charging system and the SH-775 is ideal.
 
Ok so I removed the seat and exposed the white and blue , white and green , and yellow wires and performed the NO LOAD test .. all appears to be good using tester took reading between blue white and yellow white blue and white green and white green and yellow .. while high beam was on and rpms up at 5000 .
All 3 readings were up around 86 volts of ac to 92 volts ... however when firat looking and before disconnecting wires , noticed the blue whit was mealted to the yellow and had a fair bit of corrossion ... I cleaned all connections and attached wires . Then ran bike again noticing the blue white whire gets VERY HOT !!! would this be due to the R/R not regulating amps ??
 
OK HERE WE GO !! DING DING DING ... WE HAVE A WINNER !!

where the rectifier conects (plugs in )via some white plug connector beside the battery box .. it is just a big melted mess !! Grrrr so yeah its a givin the rectifier is pooched !!!
 
Connector fried !! Should I assume the rectifier is pooched ? Or clean all contacts and hook back up ?
Its odvious something got very hot and mealted this ... would that be the pooched rectifier ?
 
Yeah, you got some work to do- good news is that you don't want/need that connector. You want the 3 stator outputs direct to a good R/R skipping any connector plug.

you said "....All 3 readings were up around 86 volts of ac to 92 volts " - this was doing the AC test with stator disconnected from R/R ,right???? If so, this means your stator is likely still good despite being tortured by the crappy R/R.

You need to read some of posplayr's clues to charging health. I'd strongly opt for the SH-775 and fix/clean all connections.
 
Well I do know this rectifier isnt an original !! So I think ill do the same and not buy the original $250 doller one and ill put in whatever I can get my hands on tonght ... plan on selling this bike when I get the new one hopefully in the next week ... there is 3 yellow wires 1 red and 1 green coming out of this rectifier .. no name or description on it other then someone carving in the numbers 30302 16 in the side of it with a screw driver or something ... grrrrr its 19 degrees here and I wanna ride !!!
 
"grrrrr its 19 degrees here and I wanna ride "

65 here, snow vanishing as you look at it. My bike will escape its prison next week -with new rear tire!
 
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