GL 1500 Alternator Bible


Information and questions on GL1500 Goldwings (1988-2000)
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cbx4evr
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1981 Honda CBX - sold :-(
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GL 1500 Alternator Bible

Postby cbx4evr » Thu Jul 04, 2013 10:45 am



I've done some searching and reading but haven't got answers to all my questions and thought I would try and get a thread going that put it all in one place.

So for starters this info is good to know. In 1995 HITACHI moved their manufacturing from JAPAN to CHINA, since then they have been producing bad alternators.

My bike is a 2000 with the stock 40A alternator. I haven't overdone it with extra lighting and don't use heated clothing. So far haven't had an issue with dead battery or charging.

My bike currently has about 65,000 miles on it. I want to be proactive and get a replacement alternator to have on hand should mine fail. I know alternator life isn't based on mileage so much but is there a figure that one could use for life expectancy?? Do they normally last 70, 80, 100K miles?

So now I am looking to purchase. Should I stick to 40A or move up to 70A or 90A? Will I need to replace the battery if I go to a higher output unit? I know Compufire recommends that with their units but is it necessary.

I know there are other brands than Compufire. Any recommendations or horror stories?

I'll start with that and see where it goes. I'm sure I'll have some other questions down the road.


"It´s a friggen motorcycle, it´s not supposed to be comfortable, quiet or safe. The wind noise is supposed to hurt your ears, the seat should be hard and riding it should make you s**t your pants every now and then. "

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cbx4evr
Posts: 1397
Joined: Tue Mar 09, 2010 8:35 pm
Location: Edmonton, AB Canada
Motorcycle: 2000 GL1500SE
2004 Kawasaki KLR 650
Solex 5000
1980 Honda CBX - sold :-(
1981 Honda CBX - sold :-(
Contact:

Re: GL 1500 Alternator Bible

Postby cbx4evr » Thu Jul 04, 2013 7:04 pm

Some info I have gleaned from other posts:

Mounting Bolts

In '88-'89 the bolts are shouldered bolts.

In '90-up the bolts are not shouldered.

If you're willing to enlarge the mounting bolt holes in the '90-up alternator, it's an easy fit to the '88 -'89. Another option that some folks use is to change the mounting bolts to a non-shouldered bolt.

Bearing Numbers

If you do the front bearing, you will need the seal, also.

Front seal is a CR8845 Front brg. is a 6022DU, rear is a 6000DU.
"It´s a friggen motorcycle, it´s not supposed to be comfortable, quiet or safe. The wind noise is supposed to hurt your ears, the seat should be hard and riding it should make you s**t your pants every now and then. "

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redial
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Motorcycle: 1997 GL1500 Spectre Red Aspencade

Re: GL 1500 Alternator Bible

Postby redial » Sun Jul 07, 2013 11:17 pm

When it is time to up my alternator, I will be going to Mr Heming,
http://myplace.frontier.com/~hemi-roid/

There have been some very favourable reports on his work on other sites. He seems to know what it is all about, and can advise you if you need to upgrade whether you need a bigger/better battery. At least talk/email him to give you some ideas.

Alternators last forever, until they dont. I think that the 40a alternators are a bit underresourced, especially seeing everyone wants to put the biggest and bestest electrical fittings they can, so I would be considering a larger capacity alternator.
Len in Kapunda

The world is not going to finish today, as it is already tomorrow in Australia and New Zealand, and other islands of foreign nations such as Guam and Samoa.

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landisr
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Motorcycle: 1976 GL1000
1994 GL1500A

Re: GL 1500 Alternator Bible

Postby landisr » Mon Jul 08, 2013 9:55 pm

It seems I have read here and elsewhere that the later model alternators have problems with short circuits or breaks in the windings of their stators. Not an easy roadside fix. If you were to buy a new OEM unit, I'm not sure you could be confident you were getting an older/better (?) unit. Buying a Compufire would/should resolve both reliability and capacity issues. Getting a newer style battery with it would be your call. I also have heard good things about the Hemming option.

Let us know what you decide.

Ron (still) in MI
Beam me up, Scotty. There's no intelligent life down here.

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hugger-4641
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Motorcycle: 1994 GL1500 Aspencade, 1982 CM 200 Twinstar, 1984 VT500 Ascot

Re: GL 1500 Alternator Bible

Postby hugger-4641 » Tue Jul 09, 2013 1:49 pm

I'm not aware of anyone having problems with the stator windings, the problem I've heard the most about, and have experienced personally, is the rotor winding shorting out or breaking.




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