Clutch oil leakage


Information and questions on GL1500 Goldwings (1988-2000)
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Gdgiò
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Goldwing SE 1999

Clutch oil leakage

Postby Gdgiò » Mon Oct 05, 2015 3:15 pm



Hallo GW folk :D

while I am studing the way how to aproach my winter project and thus familiarize with the bike, i noticed an .......AAAARRRGGGHHHH ....oil drop on the floor!
I found the point where it comes (see the picture) and ,according to GW 1500 manual it is from the master clutch cylinder ,Right??
I red a post about how to refurbish a master cylinder but one thing is bothering me.
Tip to remove master cylinder , says that pressing the clutch lever(after having losen the bolts) will move the master cylinder backward and while moving there will be a oil drain. Will it be clutch oil or engine oil?
I mean IF the master cylinder will just open the engine room but keeping clutch oil in itsself inside.

One more info,did anybody replaced the radio dash cover? including the plastic and traslucid text (see pictures)?
I could not find any OEM spare fo these
thanks
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WingAdmin
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Re: Clutch oil leakage

Postby WingAdmin » Mon Oct 05, 2015 3:20 pm

Incidentally, the master cylinder is the one up on the handlebar with the lever attached. What is leaking in your picture is the slave cylinder.

There will be some oil that comes out when the slave is pushed out, and it will be engine oil. It's important that you do a full engine oil change after you finish rebuilding the slave cylinder - clutch hydraulic fluid that may have leaked into the engine oil can cause engine main bearing failure, which will basically scrap your engine.

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Bluewaterhooker0
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Motorcycle: 1997 Goldwing GL 1500 SE

Re: Clutch oil leakage

Postby Bluewaterhooker0 » Mon Oct 05, 2015 11:17 pm

Sierra Electronics and Cyclemax, both sell a set of decals for the GL1500 radio. I'm not sure if that's what you are looking for, but thought I throw it out there.

http://www.sierra-mc.com/proddetail.asp ... GL15SE-DEC

http://cyclemax.com/inc/sdetail/gl1500_ ... al/86/8500


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bohdan
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1977 GL1000
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Re: Clutch oil leakage

Postby bohdan » Tue Oct 06, 2015 7:58 am

I replaced my entire slave cylinder component about a year ago. The piston is integral with the slave unit and if you remove the three bolts, the hydraulic line , it will come out. I had a California emissions bike and I had to take the canister off to get to it. My hydraulic clutch fluid was going somewhere and I was concerned that it was leaking into the engine. After careful observation, my cylinder wall appeared to be worn out on one side and crated a crater. Therefore requiring to get a whole component for $150.

Gdgiò
Posts: 21
Joined: Tue Sep 30, 2014 9:17 am
Location: Milan Italy
Motorcycle: Yamaha dragstar Classic (sold)
HD883
Goldwing SE 1999

Re: Clutch oil leakage

Postby Gdgiò » Wed Oct 07, 2015 3:07 pm

Thanks for the tips.
I saw actually these decals ,but they are not OEM's part and the letter stamped looks to be "blind" so the nice blue back light would not go through.
I am trying to build these by using some glossy paper....let'see!

Admin
actually your correction makes sense.The master says what the slave does.. and the slave operates the clutch-- :lol:

Can you help me to understand how the clutch oil may enter the engine chamber,thus, polluting the engine oil?
What I understand, is that the slave cylinder is pushed by the fluyd coming from the hydraulic line and 2 seals separate the engine chamber.If the slave piston's cup seal (#10) leaks, i understand that hydraulic fluyd is drained by the "drain slot"(see red arrow) and no pressure can be built to go through the 2 engine seals (#15&16).
Do you agree?
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spiralout
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Re: Clutch oil leakage

Postby spiralout » Wed Oct 07, 2015 3:35 pm

Gdgiò wrote:Can you help me to understand how the clutch oil may enter the engine chamber,thus, polluting the engine oil?
What I understand, is that the slave cylinder is pushed by the fluyd coming from the hydraulic line and 2 seals separate the engine chamber.If the slave piston's cup seal (#10) leaks, i understand that hydraulic fluyd is drained by the "drain slot"(see red arrow) and no pressure can be built to go through the 2 engine seals (#15&16).
Do you agree?

Makes sense to me. Here's a little more info http://goldwingdocs.com/forum/viewtopic.php?f=6&t=28498

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WingAdmin
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Re: Clutch oil leakage

Postby WingAdmin » Thu Oct 08, 2015 9:24 am

That's the design, yes. However there have been owners that, for whatever reason (clogged weep hole?) had the fluid migrate into the engine oil. One of our users had this happen, and scrapped his engine as a result.

The design for the water pump is for either coolant or oil to migrate out the water pump weep (telltale) hole, instead of intermixing - but not everything works always as designed. The first indication of a failed water pump is often chocolate milk looking oil, or an oily sheen in the coolant, as the fluids are intermixed.




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