ALTERNATOR FAILURE


Information and questions on GL1500 Goldwings (1988-2000)
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gford
Posts: 77
Joined: Fri Feb 10, 2012 8:55 pm
Location: Canada
Motorcycle: 1999 Goldwing SE

ALTERNATOR FAILURE

Post by gford »



Well my alternator failed at 22K miles. Open rotor was the cause. I replaced it with a WPS 90 amp unit. Charges great, however I get a shake, rumble ,shimmie from 1700 to 2000 rpm. This makes my normally quiet and smooth gold wing a pain to drive on secondary roads. I changed the position of the vanes to different places in the dampeners and it made some difference, but, the rumble was still there and annoying enough that today I went the the shop and ordered a new 40 amp alternator. They are going to reimburse me for the 90 amp. The alternator dampeners are two years old.

Anybody else ever experience anything like this when using a 90 amp alternator?



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AZgl1800
Posts: 2403
Joined: Thu Oct 30, 2008 2:46 pm
Location: Lake Oologah Indian Territory USA
Motorcycle: '02 GL1800
2009 Piaggio MP3 250cc

Re: ALTERNATOR FAILURE

Post by AZgl1800 »

you MUST always replace the dampeners when changing the Alternator.

the old ones get hard as a rock, so buy so new ones.
~John

'02 GL1800
2009 Piaggio MP3 250cc

gford
Posts: 77
Joined: Fri Feb 10, 2012 8:55 pm
Location: Canada
Motorcycle: 1999 Goldwing SE

Re: ALTERNATOR FAILURE

Post by gford »

John, is that written in a manual somewhere or is it something you know from experience. Two years is not a long time for dampeners to go hard.

tsandvik
Posts: 81
Joined: Mon Dec 14, 2015 2:05 pm
Location: Tampa, FL
Motorcycle: 1990 GL1500 Aspencade

Re: ALTERNATOR FAILURE

Post by tsandvik »

Dampers are super cheap. Mine ran 16 bucks for all 4 (come as two per). Makes no sense to not put in new if you are spending the amounts it costs for new alternators. Already in there and they are just drop in pieces.
I can see this material hardening up in 2 years and conforming to the contours of the old unit. A lot of heat in that area. No idea how old mine were but they were hard as a rock and had some oil contamination.

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Sidcar
Posts: 742
Joined: Thu Jul 05, 2012 3:07 pm
Location: Birmingham, England, United Kingdom
Motorcycle: 1995 GL1500 SE (20th Anniversary) and Squire RX4 sidecar

Re: ALTERNATOR FAILURE

Post by Sidcar »

I fitted a WPS 90 amp and the vibration was awful even with new damper rubbers.
I ditched it for a 40 amp unit and the smoothness returned.
With the system fully loaded, lights heated grips and seat panel (in the sidecar) the alternator more than holds its own and my fingers don't "tingle" when I finish a ride.

Sid

gford
Posts: 77
Joined: Fri Feb 10, 2012 8:55 pm
Location: Canada
Motorcycle: 1999 Goldwing SE

Re: ALTERNATOR FAILURE

Post by gford »

Installed the new 40 amp alternator today and the bike is back to its normal smooth self. The 90 amp charged ok but it sure made the bike vibrate between 1700 and 2000 rpm.

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Sidcar
Posts: 742
Joined: Thu Jul 05, 2012 3:07 pm
Location: Birmingham, England, United Kingdom
Motorcycle: 1995 GL1500 SE (20th Anniversary) and Squire RX4 sidecar

Re: ALTERNATOR FAILURE

Post by Sidcar »

Hello WPS, why do your 90 amp alternators make our bikes vibrate??

Sid.

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RockportDave
Posts: 427
Joined: Sat Mar 31, 2018 9:39 pm
Location: Rockport Texas
Motorcycle: 1999 GL1500 SE
Previous bikes:
1969 Honda CL90 “bobbed” before it was cool
1981 Yamaha 850 Triple w/Windjammer
1981 GL1100 Interstate
1985 GL1200 LTD
1988 GL1500
1988 GL1500

Re: ALTERNATOR FAILURE

Post by RockportDave »

I put a 90 amp WPS on mine a year ago and it runs smooth. Puts out 13.9 volts at idle. I purchased on eBay and it came from Discount Starter and Alternator.
Dave


1999 GL1500SE 5th Goldwing through the years

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