Clutch Slave Cylinder Rebuild


Information and questions on GL1500 Goldwings (1988-2000)
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Texas-JR
Posts: 2
Joined: Mon Oct 31, 2011 12:33 pm
Location: San Antonio, TX
Motorcycle: 1992 GL1500A

Clutch Slave Cylinder Rebuild

Postby Texas-JR » Mon Oct 31, 2011 1:42 pm



New member here....and needing some assistance with my '92 GL-1500A. Clutch will not release. I rebuilt the master cylinder, changed fluids, bleed the lines and still only getting partial action from the clutch. The fluid and master cylinder had all kinds of junk in it. I suspect that I need to rebuild the slave cylinder also. The shop manual I have says it can be done with the engine installed but the rest of the instructions and photos in the manual are for the procedures with the engine off the frame. Can it be done with the engine mounted? Any special tools needed? It looks awful tight in there. Any help appreciated.

-JR



Mosko
Posts: 7
Joined: Thu Oct 27, 2011 9:56 am
Location: Dalton, Georgia
Motorcycle: 1995 GL1500I

Re: Clutch Slave Cylinder Rebuild

Postby Mosko » Tue Nov 01, 2011 6:25 am

JR wrote...only getting partial action from the clutch.' rebuild the slave cylinder also.' Can it be done with the engine mounted?


Yes, Remove,
1. Both front left side covers.
2. Evap canister
3. Bleed pipe mounting bolt.
4. slave cyl mounting bolts.
5. Slave cyl
6. lifter rod.

You'll have to forgive me here just a bit, I'm new here also, as well as A HD Tech. I mentioned in an earlier post that I'm helping an old friend get a GL1500I in shape to sell after sitting a while.

I've had to figure out several things along the way here that I have never done before. I'm beginning to admire this metric bike somewhat due to some of the ingenuity used to install so much "stuff" in confined "non visible" spaces. Be patient, have good normal tools and take your time.

I have found that universal sockets, and ratcheting box wrenches are a must!

Best Regards... Moskov

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virgilmobile
Posts: 7487
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Clutch Slave Cylinder Rebuild

Postby virgilmobile » Tue Nov 01, 2011 12:24 pm

I don't own a 1500...YET...but I do understand hydraulics.Before you tear that thing apart,use a hand vacuum pump to bleed the fluid.It's a small world in there and just a good trapped bubble will reduce the effective stroke of the slave cylinder.Obviously the piston is not stuck by your description and the only reason to rebuild it is for leaking fluid or seizure.

Texas-JR
Posts: 2
Joined: Mon Oct 31, 2011 12:33 pm
Location: San Antonio, TX
Motorcycle: 1992 GL1500A

Re: Clutch Slave Cylinder Rebuild

Postby Texas-JR » Tue Nov 01, 2011 3:09 pm

Thanks all for the response. Will try bleeding again before tearing into it!

User avatar
virgilmobile
Posts: 7487
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Clutch Slave Cylinder Rebuild

Postby virgilmobile » Tue Nov 01, 2011 3:23 pm

There are many posts about "clutch issues" and "bleeding the clutch" in the search section.Most refer to the clutch as being a bear to get all the air bubbles out.A Mity Vac hand pump seems to speed up the service time.

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Blackngold
Posts: 98
Joined: Wed May 16, 2012 10:11 pm
Location: Fairhope, Alabama
Motorcycle: 1998 GL1500 SE

Re: Clutch Slave Cylinder Rebuild

Postby Blackngold » Mon Dec 07, 2015 8:01 am

I'm prepping my 98 1500 for a road trip this spring and decided to rebuild clutch slave as I figured it had never been done. Don't have a fancy garage with walls full of tools or a bike stand cause
I'm not a bike mech. but having looked at the do it your self instructions on this great site felt It wouldn't be over my head.(THX wing adm.!!!) Put bike on center stand and was able to get the job done w/average amount of effort and knucle busting. Oh I already had alternator out waiting on replacement and this made job much easier! Most difficult part was getting the old seal out of the back of clutch plate wall where piston pushes in clutch. Lots of old dried leaking fluid crud. Got it all back together and started bleeding process. then had the same prob as others posting, couldn't get it to bleed all the air out. Not going to spend $50 bucks on a mighty vac for a one time bleed job (rem I'm not a mech) so I got the cheaper little bleed bottle and clear tubing for $10 . So the short of all this is a bike mech would have known that when bleeding the line you need to turn the front tire all the way to the right to make the fluid resv. the highest point in the system. I spent hours trying to get the air out thru the slave bleed tube with no results before I figured it out. Within 10 min of pumping the clutch handle with tire turned to the right all the air was gone!! So saved myself some nice coin and learned something too. Good luck all!

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Happytrails
Posts: 568
Joined: Wed Sep 04, 2013 6:13 pm
Location: Tarentum, Pennsylvania
Motorcycle: 1991 Goldwing 1500 SE

Re: Clutch Slave Cylinder Rebuild

Postby Happytrails » Thu Dec 10, 2015 12:09 am

The slave can get gummed up. It looks a lot harder than it is. There is more room in there than you would think. You can reach you hand in there with a rachett. When I did this I took the alternator off but now I dont think I would do that. Work from the left side. I think 3 bolts. Mine was in bad shape so had to replace it.
1991 GL1500 SE Anniversary Edition
Sun Flare Gold Metallic
Vallant Brown Inset

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Happytrails
Posts: 568
Joined: Wed Sep 04, 2013 6:13 pm
Location: Tarentum, Pennsylvania
Motorcycle: 1991 Goldwing 1500 SE

Re: Clutch Slave Cylinder Rebuild

Postby Happytrails » Thu Dec 10, 2015 3:54 pm

Original scored pretty badly inside.


New slave


Can't quite see it in this photo. But if you reached from up underneath you could touch it with your hands.
Attachments


1991 GL1500 SE Anniversary Edition
Sun Flare Gold Metallic
Vallant Brown Inset


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