86 GL1200 Clutch

Information and questions on GL1200 Goldwings (1984-1987)
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Joined: Fri Apr 02, 2010 11:24 pm
Location: Littleton NH
Motorcycle: 1986 GL1200I

86 GL1200 Clutch

Postby Madigar » Mon Jul 11, 2011 6:42 pm

last year the clutch started to creep, so I cleaned out the gunk from the master cylinder, replaced the fluid and bled the system only to have the same issue, so I thought bad slave cylinder. rebuilt the slave and had same issue, rebuilt the master cylinder thinking that that was the issue but again had the same issue. Pulled the clutch pack, checked the friction disks with a micrometer (all in serviceable ranges) put it all back together and now have no resistance at the clutch handle, Have bled and re-bled more time than I can count using mightyvac but there is just nothing there. As you can tell I know just enough to get myself into trouble but not enough to get me out. HELP!!

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Motorcycle: 1988 GL1500 I
Previously owned
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84 GL 1200 I

Re: 86 GL1200 Clutch

Postby virgilmobile » Tue Jul 12, 2011 7:52 am

I haven't had a problem yet,but,Is it possible that the clutch master cylinder is constructed just like the brake?If so,it should react the same way.Assuming that the piston is sealed and moving full stroke in and out,with the bleeder hole and filler hole open to allow fluid into the chamber.
Unhook the banjo fitting and test the clutch master first to see if it will create pressure on that port.

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Re: 86 GL1200 Clutch

Postby englishted » Fri Jul 15, 2011 4:41 pm

The clutch is a real pig to bleed on the GL1200. You just have to keep at it,maybe crack the banjo bolt at the MC end to get air out of that.

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Location: Warner Robins, Ga
Motorcycle: 1985 GL1200A ASPENCADE

Re: 86 GL1200 Clutch

Postby joew7139 » Sat Jul 16, 2011 11:24 am

My 85 Aspencade had a slow leak in the slave cylinder. If I don't catch it in time before the level gets too low and get air in the line, I have found that by pulling the clutch handle in and putting a zip tie on it overnight the air will travel up the line and bleed itself.

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Re: 86 GL1200 Clutch

Postby Mooseman » Sat Jul 16, 2011 12:13 pm

When bleeding the clutch I have found it takes a little bit of finesse to get the little bits of air out. With the cap off the master cylinder and rags below to protect the bike and the wheel turned to the right to try and make the reservoir as level as possible. Squeeze the clutch lever about an inch or so and release. You will see the fluid moving around and if you squeeze to far and release to quick you may get a little squirt out the top, reason for rags. Keep working the clutch lever till you see no more little bubbles coming out from the bottom. Now hook your vac bleeder to the bleeder valve. Just a little vacuum and crack the bleeder screw. Now squeeze the clutch lever all the way to the hand grip and release slowly. Once you have a solid line of fluid keep pumping the clutch lever to the hand grip and add fluid as needed. When you have filled your catch jar about 1/2 to 3/4 full you have pumped enough brake fluid to clear the system. Close the bleeder screw. Top off the reservoir and and put the cap back on.
The big thing is to clear the little bubbles out of the master cylinder.
Hopefully this will do the trick. If there are no leaks anywhere this should work for you. Good luck and keep us updated.
P.S. Some have stated in the past that they had no visible outside leaks but found the slave cylinder leaking on the inside at the push rod.
Enjoy the ride. They are all good, just some better than others.

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Joined: Fri Apr 02, 2010 11:24 pm
Location: Littleton NH
Motorcycle: 1986 GL1200I

Re: 86 GL1200 Clutch

Postby Madigar » Mon Jul 18, 2011 7:46 pm

thanks for the tips, I will give them a try this week

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Joined: Mon Jun 21, 2010 6:58 pm
Location: Beaver Dam, WI
Motorcycle: 1987 GL1200A Aspencade

Re: 86 GL1200 Clutch

Postby bdfd1220 » Sun Jul 31, 2011 12:05 pm

Mooseman, that sounds like exactly what I need to do! thanks for the info!

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