CONVERT CABLE CLUTCH TO HYDRAULIC - Sunny's HOW-TO

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sunnbobb
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CONVERT CABLE CLUTCH TO HYDRAULIC - Sunny's HOW-TO

#1

Post by sunnbobb »

-editors note: This is the first of what I hope are many how-to's that condense, rewrite and photograph subject matter discussed throughout the NGW site. - Sunny

SUMMARY

To convert your GL1000 (or 1100) to a hydraulic setup, remove the clutch lever, cable and cover from your bike. Replace the system with a lever, hydraulic line, clutch cover and slave cylinder from an 84 GL1200. A simple modification is needed to the 84 slave cylinder push rod. (No modification is needed to the gl1200 push pin if you are installing this in an 1100.


Honda introduced the Goldwing hydraulic clutch in 1984. The cover from a 1984 GL1200 fits the GL1000 perfectly, and is the only hydraulic cover that does so. After 1984, the cover bolt down hole pattern changed and the covers were no longer interchangeable with the older GL's. The slave cylinder however, remained the same 1984 through 1987. In other words any slave cylinder from 1984-87 will fit the 1984 cover.


PARTS LIST


84 Clutch cover
84-87 Clutch slave cylinder
84 Cover center seal
84 Cover gasket
84-87 Slave cylinder rebuild kit
42mm (1-5/8") 5/16" diameter 304 SS round rod.


CLUTCH COVER REBUILD

Begin by removing the slave cylinder from the 84 clutch cover and set it aside. Clean up the 1984 clutch cover. Be sure to thoroughly remove the old gasket used to seal the cover to the case.

Remove the small rubber seal in the middle of the cover. It probably won't want to come out easily, don't worry about tearing it up, it will be replaced. Clean the seal seat in the cover thoroughly.

If you want, now is the time to refinish or polish the cover.

Place your new center seal into the seal seat and press it carefully into place. A rubber mallet and wood dowel work well for this.

Check the gasket against the cover to ascertain a correct fit. If the gasket is upside down it will not match up to the holes. After you have ascertained the correct positioning of the gasket, apply a gasket glue to the cover and place the gasket in place on the cover. Set the cover aside.

SLAVE CYLINDER REBUILD

Remove the rubber Zerk cover and discard. Using LIGHT air pressure, place an air nozzle in the hydraulic line hole and blow the piston gently out of the slave housing. Remove and discard the spring, piston seal and inner rubber push rod seal. Thoroughly clean all parts. Now is also a good time to clean and/or polish the slave cylinder. I prefer to wire wheel the exterior of the cylinder and apply a clear coat when finished. A light whisking of the piston and sleeve with fine emery cloth is advised to remove any built up residues and/or ridges.Replace the previously removed parts with the new parts in your kit and reassemble the slave cylinder.

MODIFY THE PUSH ROD

The 84 GL1200 hydraulic slave had a push rod designed to go deep into the clutch pressure plate. Prior to this, the GL's (cable driven) had a stubby push rod. In order to convert your pre-84 to a newer hydraulic you must manufacture a new modified push rod. The 84 push rod can be modified by cutting and using a sleeve, however, I found it easier to simply make a new one without having to hunt for special parts.

Begin with a raw 5/16" diameter 304 stainless steel round rod. Cut the rod to 42mm, then round and polish both ends. The idea is to get the push rod to extend the same distance into the clutch as the original cable driven clutch.


REASSEMBLY

Insert the new push rod into the rear of the slave cylinder.
Bolt the slave cylinder to the clutch cover.
Bolt the clutch cover to the case.
Attach hydraulic lines.
Attach hydraulic master cylinder.
Bleed system.
Ride.

SIDE NOTES

For my application I chose to use a BDL clutch master cylinder and braided stainless steel hydraulic lines. I split the line in the middle and joined it with a union to allow me ease in routing the line.

I collected all the information I could from the internet prior to performing this operation. I want to thank Old Fogey and Frank Marx for the information they provided.

SHAMELESS SELF PROMOTION: I will sell you a complete rebuilt and polished hydraulic setup for $195 shipped Includes cover, slave, lines, fittings - just add the master cylinder of your choice. Modified push rods are available for $15 shipped as well.


A COMPARISON OF CLUTCH COVERS THROUGH THE YEARS

FRONTS

Image

BACKS

Image


HONDA PARTS DIAGRAM 78 GL1000 CLUTCH COVER

Image


HONDA PARTS DIAGRAM 84 GL1200 CLUTCH COVER
(THE PUSH ROD IS IDENTIFIED AS #4)

Image


78 VS 84 CLUTCH COVER COMPARISON

Image


CLUTCH COVER AND SLAVE REBUILD PARTS ($25 FROM TAS CLASSIC MOTORSPORTS ++ CANDY!)

Image


SLAVE CYLINDER PARTS AFTER REPLACEMENT

Image


CUTTING A NEW PUSH ROD FROM 5/16" SS

Image


GRINDING END OF NEW PUSH ROD TO A ROUND POINT

Image


POLISHING END OF PUSH ROD

Image


MODIFIED PUSH ROD

Image


MODIFIED PUSH ROD INSTALLED IN SLAVE CYLINDER

Image


MODIFIED AND REBUILT UNIT READY FOR INSTALLATION

Image

NOTES FOR CONVERTING A GL1100:
If you are installing this cover on an 83 gl1100, you will need to retain and use the long pushrod from the gl1200. The short rod will not be needed. If installing in an 80-82, you will use the 1100 push rod.
Last edited by sunnbobb on Tue May 05, 2009 2:23 pm, edited 1 time in total.
I found the end of the internet

---- Bradshaw Bikes custom polishing for your wing. Visit us on facebook!

1978 Learning Experience
1980 County Road Hauler "Brain Damage"
1978 Cafe Custom Gl1000 "Vyper"
1977 Bulldog Inspired "Vaincre"
1981 Street Fighter GL1100 "No Quarter"
1983 Supercharged Street Drag "Anubis" (in worx)
1983 gl1100 mint restoration "Kristen"
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#2

Post by ElPiloto »

I think this excellent write up should be in the "How To 4-Wings" and "Shop Talk" sections.

If you need a really strong clutch like a Barnett, this is the best way to control de-clutch and engage clutch.

Of course there are other ways, but I believe this is the best way.
"Some Cats Got it, Some Cats Ain't"
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#3

Post by Whiskerfish »

ElPiloto wrote:I think this excellent write up should be in the "How To 4-Wings" and "Shop Talk" sections.

Agree!! It will get there.
"Agreement is not a requirement for Respect" CDR Michael Smith USN (Ret) 2017
"The book is wrong, this whole Conclusion is Fallacious" River Tam
2008 GL1800 IIIA "TH3DOG"
1975/6/7/8/9 Arthur Fulmer Dressed Road bike
1975 Naked Noisy and Nasty in town bike
and a whole garage full of possibilities!!

Psst. oh and by the way CHANGE YOUR BELTS!!!!
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Ron
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#4

Post by Ron »

ebay has a so called 84 clutch cover item 140044350311 . I have no idea what year it actual is but it can't be an 84 .
"X"
1976 GL1000
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sunnbobb
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#5

Post by sunnbobb »

Yeah, I saw that one, sent the guy a note, but no response...
I found the end of the internet

---- Bradshaw Bikes custom polishing for your wing. Visit us on facebook!

1978 Learning Experience
1980 County Road Hauler "Brain Damage"
1978 Cafe Custom Gl1000 "Vyper"
1977 Bulldog Inspired "Vaincre"
1981 Street Fighter GL1100 "No Quarter"
1983 Supercharged Street Drag "Anubis" (in worx)
1983 gl1100 mint restoration "Kristen"
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#6

Post by Whiskerfish »

Moved
"Agreement is not a requirement for Respect" CDR Michael Smith USN (Ret) 2017
"The book is wrong, this whole Conclusion is Fallacious" River Tam
2008 GL1800 IIIA "TH3DOG"
1975/6/7/8/9 Arthur Fulmer Dressed Road bike
1975 Naked Noisy and Nasty in town bike
and a whole garage full of possibilities!!

Psst. oh and by the way CHANGE YOUR BELTS!!!!
heraldhamster
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#7

Post by heraldhamster »

I've said it before and I'll likely say it again, but d*mmit you're a genius SB.

outstanding write up and pics.
sorta bulldogged custom 1978 GL1000 - "geekster"
full Vetter dress 1979 GL1000 - "Barge" (currently down)
1986 1200 Aspencade - "Heart of Gold" - daily rider
1990 1500 Aspencade - It's ALIVE! but very, very naked. not in a good way.
1978 for $100 - project in worx
1978 from a previous member here - taking up space
my original '79 bought in '91 - replacing engine (eventually, maybe someday)

H2G2=42

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#8

Post by shersba »

nice write up sunnbobb
Brad

1978 GL 1000
2002 GL 1800 (new to me)
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#9

Post by Roady »

Wow ... just, umm, WOW!

Now if I just had the fabricatin' skills like you got I might do that. In fact, I need to do that!

Thanks for this and all you do around here. You're a gem.
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Old Fogey
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#10

Post by Old Fogey »

If I may, I'll add a bit to this.

I had a worry, having modified my clutch pack by binning the damper plate, that the pushrod size would be altered.
This may be the case even with manufacturing tolerances (although not too likely).
So I made up a simple tool to check for the correct length of rod.

Check out page 4 & 5 of ENGINE REBUILD TIPS
"Impossible Is Just a Level of Difficulty!..."
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#11

Post by Victour »

Great I adjusted my manual clutch and said how on earth are my Artheritis fingers supposed to pull that.. the Hydraulic is the only way to go..
1978 Gl1000 LTD

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#12

Post by areem57 »

I was planning on running a custom stainless steel line, do you know they exsact length of the hydraclic line? Thank you, Ryan.
1981 GL1100 Wineberry Mm
1979 CB750K
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#13

Post by sunnbobb »

No I don't actually. It depends on your handlebars and how you want to route the line. I put 2 piece lines with a joiner to make it easy to service either end, or to get the line out of the way if I need to do some work under the hood.
I found the end of the internet

---- Bradshaw Bikes custom polishing for your wing. Visit us on facebook!

1978 Learning Experience
1980 County Road Hauler "Brain Damage"
1978 Cafe Custom Gl1000 "Vyper"
1977 Bulldog Inspired "Vaincre"
1981 Street Fighter GL1100 "No Quarter"
1983 Supercharged Street Drag "Anubis" (in worx)
1983 gl1100 mint restoration "Kristen"
areem57
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#14

Post by areem57 »

sunnbobb wrote:No I don't actually. It depends on your handlebars and how you want to route the line. I put 2 piece lines with a joiner to make it easy to service either end, or to get the line out of the way if I need to do some work under the hood.
I think i'm going to have to follow you on this I cant find any banjo to banjo stainless steel braided line that is long enough.
1981 GL1100 Wineberry Mm
1979 CB750K
boogie red
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soggy clutch

#15

Post by boogie red »

Very interesting, especially since my clutch has a odd feel, hard to discribe, a timing thing and my hand is arthretic as well, so I am very interested. Where do I find a mastercylinder and does a lever come with it? I am also working on the forks,76 wing by the way, got em all apart,I see a worn bushing, very dirty and only parts I could find were seals and springs,no sliders,got a second set,air assisted,had some different parts in it,also worn. Any way do u know anyone that may have a segestion or parts? Thank u very much. I want the clutch stuff,but i gotta get this fork stuff done and back on the ground first. Any ides greatly appreicated!
76 gl naked, runs good, always tinkering
79 gl all the fairing stuff gone, work-in-progress
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