Honda RC51: Discussion of the Honda RC51, Honda SP1, and Honda SP2 Motorcycles.
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Changing the Clutch Fluid
03-29-2005, 7:28 PM
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#1 | | Listen Johnny...
Join Date: 06-27-2001 Location: Simi Valley, CA
Bike(s): 05 RC-51 - 03 KTM 525 SMC Age: 32 Posts: 1,236
Rep Power: 12
| Changing the Clutch Fluid Okay, this may seem like a waste of bandwidth for some on this board, but I need a little assistance.
While I was putting on the new front sproket, I decided to change the clutch fluid as it was black. I have never had to deal with a hydro clutch before but it looks a lot like brake lines so I figured it couldn't be too bad. Well my question is this...
I can't seem to get the right pressure back into the system. I've bled the system a few times, but it feels like there is always air in it. My lever is so lose (How lose is it?) it seems like the clutch doesn't engage at all. Is there something I'm missing in the procedure? Do you pump the lever and continue to fill the system while still bleeding the air?
Thanks |
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03-29-2005, 7:40 PM
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#2 |
Join Date: 08-01-2001 Location: Lost
Bike(s): Puch Posts: 14,391
Rep Power: 34
| Re: Changing the Clutch Fluid Honestly, somehow I've never had to do it on a bike yet.
But on cars, hydro clutches can be a real bitch.
Just keep going, hydraulic systems are about as easy as they come. You have air in it, you need to get it out.
Sometimes taking a screwdriver handle and tapping around things, starting at the bottom, can help get the air bubbles moving. |
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03-29-2005, 8:50 PM
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#3 |
Join Date: 12-29-2001 Location: New Jersey, USA
Bike(s): '01 CBR 929 black & red, K7 GSX-R600 Age: 48 Posts: 6,464
Rep Power: 17
| Re: Changing the Clutch Fluid I've bled my Ducati clutch. I had to use a MityVac to get things started. Then I bled it with the same procedure as brakes. From what I understand, hydraulic clutches are a pain to bleed. Keep at it, you've probably got air somewhere. |
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03-29-2005, 8:54 PM
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#4 |
Join Date: 07-29-2003 Location: Central NJ
Bike(s): 99 CBR1100XX (Street), 01 CBR1000RR (Track) Age: 41 Posts: 1,524
Rep:  (43) Rep Power: 7
| Re: Changing the Clutch Fluid You bleed it just like brakes. Just get all the old fluid out of the master res. and refill it with new before you start. When you see clean fluid at the bleeder, your done. Keep trying it. Remember, the lever always comes to the grip. |
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03-29-2005, 10:19 PM
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#5 | | Back From the Ashes!!
Join Date: 09-17-2003 Location: Staten Island, NY
Bike(s): '00 RC51 (Possible Resurrection), 93 Seca II(Sold) Age: 31 Posts: 7,724
Rep:   (101) Rep Power: 14
| Re: Changing the Clutch Fluid Like others have said... I used a zip tie holding the handle in while I taped the lines. Keep at it, eventually it will go away.. Just make sure to keep refilling that tiny ass res... I almost made mine get air back into the system cause I wasnt paying attention.
Good Luck |
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03-30-2005, 12:57 AM
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#6 |
Join Date: 02-28-2004 Location: Northampton, Pa
Bike(s): '04 RC51 Age: 35 Posts: 496
Rep:  (12) Rep Power: 5
| Re: Changing the Clutch Fluid |
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03-30-2005, 11:37 AM
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#7 | | Listen Johnny...
Join Date: 06-27-2001 Location: Simi Valley, CA
Bike(s): 05 RC-51 - 03 KTM 525 SMC Age: 32 Posts: 1,236
Rep Power: 12
| Re: Changing the Clutch Fluid Thanks guys, I'll try the various things and hope I can figure this out. Now I know why I like cable systems |
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04-08-2005, 10:42 PM
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#8 |
Join Date: 12-25-2004 Location: Perth - Australia
Bike(s): VTR SP-2 : 929RR (stunter) : CBR1000RR (racebike) Age: 33 Posts: 240
Rep:  (13) Rep Power: 4
| Re: Changing the Clutch Fluid As Rob said. I have a big 60ml catheder syringe with a silicone line, drop that into the resiovoir and suck all the fluid out BUT leavea tad in the bottom. If you dont introduce air into the system (ie never let it go all the way down when bleeding) you wont have a problem . I dont see what the fuss is .... hydraulic brakes are EASY to bleed . |
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