Alternator disassembly


Information and questions on GL1500 Goldwings (1988-2000)
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Sassy
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Alternator disassembly

Post by Sassy »



Hope I can get a little help with a couple of questions.
The alternator had a fare amount of vibration and a noise that seemed to be coming from it so I removed it and began disassembly. I'm not sure how to proceed and searched till I got became frustrated. Hoping there is a tutorial on removing the drive, bearings and brushes, seeing as it's apart anyway and the black rubber? drive cushions are real hard is that normal?


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Fred
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Rambozo
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Re: Alternator disassembly

Post by Rambozo »

Always a good idea to replace the drive rubbers when you have the alternator out. They are a pretty hard rubber, but need to have some give in them.
The rear bearing is pressed on the shaft and the case. Once you take out the case screws you will have to press on the rear bearing or tap on it to get the rear case off. The right size socket is a good tool to press on the outside of the bearing. Be sure to mark the case halves so you get the mounting ears and electrical plug aligned right, the first time. (Don't ask me how I know this) An impact wrench will remove the drive nut, then the rotor can be pressed out.
The brushes are available from Honda 31101-MN5-005 and they require soldering to replace. You can also get them as a kit from CycleMax.
The rear bearing is a 6000-2RS Honda number 31113-MN5-005
If you need to replace the front bearing and seal, you will have to get that from a bearing supply. I don't remember the numbers, but they will be marked on the bearing. Honda doesn't sell them without a new rotor. Both bearings will need to be pressed off the rotor shaft. New ones can be pressed on by the inner race, or wrap with a wet paper towel and microwave them for a bit and they will expand enough to slide on the shaft by hand. (wear leather gloves)
Test the rotor and stator for opens and shorts to ground. Again, Honda doesn't sell them, but you can get them from an alternator shop. They match to some small car I can't remember, but a good alternator shop will recognize them. Same with the voltage regulator. Again, soldering required.

Someone here or on GoldWingFacts had a good teardown with pictures and the common wiring failure spot. He was fixing them, but I seem to remember he stopped offering that service.
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Sassy
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Re: Alternator disassembly

Post by Sassy »

Thank-you very much for the insight and parts#s!
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Fred
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Sassy
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Re: Alternator disassembly

Post by Sassy »

Guess it's a good time to be pulling to this apart.
Drive side bearing is noisey
Drive cushions sound like ABS when hit against anything.
Brushes are wore down pretty good.
Little bearing sounds/feels ok but while I'm in here it's retiring out too.


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paseandoconhonda
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Re: Alternator disassembly

Post by paseandoconhonda »

On my last trip my alternator stopped working, I rode 200 miles with the help of a friend who gave me power from his motorcycle battery for 20 minutes and we rode 40 or 50 miles after removing the fuses to turn off all the lights. I got home and sent it to a specialist to repair it, they replaced the bearings, the tension regulator and the new rotor winding. All for 200 dollars, a tip, don't get my hands dirty and make sure it's done by someone who knows the subject.
At night and at 100 it is not noticeable.
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Sassy
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Re: Alternator disassembly

Post by Sassy »

paseandoconhonda wrote: Mon Nov 11, 2024 4:26 pm On my last trip my alternator stopped working, I rode 200 miles with the help of a friend who gave me power from his motorcycle battery for 20 minutes and we rode 40 or 50 miles after removing the fuses to turn off all the lights. I got home and sent it to a specialist to repair it, they replaced the bearings, the tension regulator and the new rotor winding. All for 200 dollars, a tip, don't get my hands dirty and make sure it's done by someone who knows the subject.
Happy to read you got hm.
As for me I learn by tearing things apart, most of the time I win by getting my hands dirty, asking questions, learning something and occasionally saving a buck.
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Fred
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paseandoconhonda
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Re: Alternator disassembly

Post by paseandoconhonda »

Yes, it's perfect, in fact I have several videos on my channel disassembling almost the entire motorcycle, even solving a reverse problem. But I know my limits and I know that if it is done poorly it will leave me stranded on the road. Congratulations on doing it yourself.
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At night and at 100 it is not noticeable.
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Sassy
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Re: Alternator disassembly

Post by Sassy »

Getting ready to go back together. Smoothed out the copper rings, new brushes, bearings, seal and drive cushions.
Does anybody have the torque for the drive cushions mount nut?






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Re: Alternator disassembly

Post by Haley »

I have a '99 SE that gave no discernable warning noises before the alternator failed and left my wife and I stranded.
We were about 6 hours driving time from home, nicely into Nova Scotia's Cabot Trail, where we could get no cellular service.
Luckily a couple of Good Samaritans took pity on us, and we got home with our disabled Goldwing (long story short).

Then came the job of definitively determining the actual failure and then trying to find a replacement. I had no luck with Honda,
and was ready to farm out a rebuild, when I thought I would try one of our town's auto parts supply stores for a replacement.

Surprisingly, I had success!

Now, with one year and 8500 kms on the new alternator, I have confidence with the product and feel I should share this supplier information.
The store that got it for me is CarQuest Auto Parts.
The company that built and supplied the alternator is in Quebec, Canada and is called Atelierdynamo (see atelierdynamo.com).
The phone # on the box is 1 866 471 8879.
The part# on the box is A204-190EN (it is a 90-amp alternator)
The price for me last year with shipping and tax included was $322 (Canadian).

Hopefully this info will help someone else who is having difficulty finding an alternator source.


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