Creaking clutch - Honda RC51 Forum : RC51 Motorcycle Forums
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post #1 of 3 (permalink) Old 06-23-2013, 02:24 AM Thread Starter
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Creaking clutch

Recently picked up an '01 RC and loving it. Brake and clutch fluids were DARK, so I changed them out, along with the oil. Everything seemed to be fine, fluids nice and light, but now I notice the clutch fluid is back to a darker color. I am guessing that I didn't get the old fluid out completely when I bled the system.

It all seemed fine after changing the fluid. I noticed last night that there was a *click* noise when I pulled in the clutch handle all of the way. Today, when I went for a ride, about halfway in, I am getting a creaking noise instead of just the single click at the end.

So, my questions here are:

1) Could this creaking noise be a symptom of the old fluid mixing with the new?
2) Could this creaking noise be a symptom of air in the system?
3) Does this sound like it could be something more that is just showing up now?

I used DOT-4 synthetic fluid for the change, and believe I didn't get any air in the system when I did the work, but as this was my first attempt, I suppose it's my possible. Any hints, tips, or suggestions are welcome. Thanks!
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post #2 of 3 (permalink) Old 06-23-2013, 07:26 AM
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At the age and wear of some of these bikes, folks have had to rebuild the master cylinders. Have you greased the moving parts?

I know when I changed out my stock handles for the Titax units, the push rod etc require some grease application periodically. (Once a year should do if you don't ride a lot in the rain)

A rebuild kit for the master cylinder is ~ $40. Maybe its a worthy investment for your peace of mind.

For air gaps, just barely crack open the circuit at the top bolt where you connect the line to the mc. This will help "burp" the air out.

The very first schoolbook that was written had God all over it. --Dave Mustaine
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post #3 of 3 (permalink) Old 06-23-2013, 04:57 PM
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I would lube the master cylinder pivots and the rubber around the piston using some engine oil on the end of a screwdriver dripping onto the pivot points. I find that brake fluid dries out and gives you this creaking especially after this kind of work.
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