Clutch Fluid Low


Information and questions on GL1500 Goldwings (1988-2000)
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User avatar
rickdf
Posts: 30
Joined: Wed Feb 07, 2018 10:38 pm
Location: Shreveport, LA
Motorcycle: 1998 GL1500SE

Clutch Fluid Low

Post by rickdf »



Hi All,

Just noticed my clutch fluid is below the "low" mark in the master cylinder. I flushed and replaced the clutch fluid (Dot 4) about 2 years ago.

Question: Is it normal that it went down that much in a 2 year span? I keep mine in the garage and keep a piece of cardboard under it so I can easily see if anything is leaking and see zero drips so does dot 4 fluid evaporate or get used up over time or do I have a leak somewhere? Thanks in advance for any info.



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MikeB
Posts: 3033
Joined: Fri Dec 04, 2009 12:54 pm
Location: Tacoma, WA
Motorcycle: 1998 - GL1500 Aspencade
183K Miles
2017 - GL1800 Audio Comfort
10K Miles
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Re: Clutch Fluid Low

Post by MikeB »

It is not normal for it to go down at all. Fluid may be leaking through the slave cylinder into the engine. You most likely need to remove and rebuild or replace the clutch slave cylinder. As a minimum, you need to verify where the fluid is going. If it is going into the engine, you can sustain serious bearing damage to the engine if not fixed.
MikeB
1998 - GL1500 w/184,500 miles ~ 2017 - GL1800 w/13000 miles
USAF Avionics Communications Tech - 18 Years / Flight Engineer C-130E - C-141B - 6 Years. Retired.
Industrial Maintenance Tech - 22 years.
Retired in Tacoma, WA

User avatar
rickdf
Posts: 30
Joined: Wed Feb 07, 2018 10:38 pm
Location: Shreveport, LA
Motorcycle: 1998 GL1500SE

Re: Clutch Fluid Low

Post by rickdf »

MikeB wrote:
Thu Jul 16, 2020 2:41 pm
It is not normal for it to go down at all. Fluid may be leaking through the slave cylinder into the engine. You most likely need to remove and rebuild or replace the clutch slave cylinder. As a minimum, you need to verify where the fluid is going. If it is going into the engine, you can sustain serious bearing damage to the engine if not fixed.
Yeah, that's what I was afraid of. I'll check the slave cylinder and go from there. Thanks!

User avatar
rickdf
Posts: 30
Joined: Wed Feb 07, 2018 10:38 pm
Location: Shreveport, LA
Motorcycle: 1998 GL1500SE

Re: Clutch Fluid Low

Post by rickdf »

Ok, after checking some previous threads and locating the Clutch Slave Master cylinder, I see I do in fact have a leak. I guess it must be a slow leak so it never actually pooled up enuff to drip. Rebuild kit on the way. I'll update this tread with any lessons learned once I get the job done. Love, love this forum!



User avatar
MikeB
Posts: 3033
Joined: Fri Dec 04, 2009 12:54 pm
Location: Tacoma, WA
Motorcycle: 1998 - GL1500 Aspencade
183K Miles
2017 - GL1800 Audio Comfort
10K Miles
Contact:

Re: Clutch Fluid Low

Post by MikeB »

rickdf wrote:
Thu Jul 16, 2020 4:30 pm
Ok, after checking some previous threads and locating the Clutch Slave Master cylinder, I see I do in fact have a leak. I guess it must be a slow leak so it never actually pooled up enuff to drip. Rebuild kit on the way. I'll update this tread with any lessons learned once I get the job done. Love, love this forum!20200716_162152.jpg
Yes sir, sure appears to be a leak but it looks to be from the mating surfaces. No matter, you will have it off and all new seals should be in your hand when you do the work. Good find.


MikeB
1998 - GL1500 w/184,500 miles ~ 2017 - GL1800 w/13000 miles
USAF Avionics Communications Tech - 18 Years / Flight Engineer C-130E - C-141B - 6 Years. Retired.
Industrial Maintenance Tech - 22 years.
Retired in Tacoma, WA

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