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Discussion Starter #1
Hi All,

I'm new to this board and a very happy new (to me) 1996 GL1500A owner. Figure I do my first post with a technical question.

I've got a light oil leak coming out on the underneath side of the alternator. Is this likely to be the oil seal Part #8 in the diagram below? If so, is that a relatively straight-forward DIY repair for someone with good wrench-turning skills?

TIA
 

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GL1800 Doctor
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I'm not an expert on much, but I believe #8 is the bearing and it's only avail. with the rotor housing #17. #21 is the O-ring that seals the assembly to the engine. Maybe someone else with 1500 experience will chime in.
 

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I'm not an expert on much, but I believe #8 is the bearing and it's only avail. with the rotor housing #17. #21 is the O-ring that seals the assembly to the engine. Maybe someone else with 1500 experience will chime in.
You may be right about the bearing, but the service manual shows it as an oil seal (page 17-16), if I'm reading it correctly. I'll pull the alternator off this weekend for a look. Thanks!
 

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GL1800 Doctor
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Yes, had gone to the local Honda dealership to get the part late yesterday and was told the same thing. Shame that a $5 oil seal is going to cost me a rotor core or alternator assembly. Thank you for your help.
 

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If the leak is very small and not getting into the alternator, I suggest leaving it alone for now. A lot of 1500s leak some oil there for years. But if the leak is bad enough to get into the alternator and onto the floor, you will have to fix it ASAP.
 
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