(bigoltool @ Dec. 23 2006,10:08) OK so I had some time off for Christmas and decided to swap out my Antifreeze for new stuff with Water Wetter. I also wanted to address the ever darkening Clutch fluid. I just put new Galfer Lines on the bike last year and fresh fluid. But ever since then my Clutch fluid has been turning rather black. I searched on here and only found a few posts about this. It would seem to be a common occurrence but what exactly is happening? Only thing I can think of is that maybe Chain lube is making its way into the slave cylinder and contaminating the fluid. It is a piece of cake to flush, which I did but I guess I am just wondering why it's happening and is there a fix? Brake calipers function for decades in harsh environments without doing this so why would the slave be so susceptible?
Yep, that nasty gunk is wearing down you cluthc slave cylinder seals causing more by pass as the miles increase.
Heres a photo of my clutch pushrod and the gunk thats has been collected on it. This same craps collects on the inside wall of the clutch cylinder walls thats just above the clutch piston head. Over a period of time with pulling and releasing of the clutch lever the piston pushes the rod in, disengaging the clutch along with pushing the gunk mix with collected dirt out of the interior wall of the cylinder, scratcheing (wearing) the cylinder walls, causing more bypass. Over a period of time a leaky slave cylinder.
All cleaned up and ready for the install of my Heavy duty case protector.
Heres a photo of a cover that seats ontop of the topside of the slave cylinder inside opening and covers the pushrod as it passed through.
A member called Suzuki4life for life can make these for you if you want to keep your cluthc fluid clean and extend the life of you slave cylinder.
Disregard the textbox in the photo. Its basically saying that this mod below will not work with a heavy duty case protector without modifications two the slave cylinder pushrod gunk protector.
The heavy duty case protector helps minumizes damage to the waterpump,pushrod and case cover in event of a snap chain while riding.
Bottomline.............
As said by BABusa
BA BUSA
MotoGP Wannabe
Group: Donating Member
Posts: 11192
Joined: May 2003
Santa Clara California
Posted on: Dec. 23 2006,10:17
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It happens in cars and trucks too nothing to do with the chain lube. There is actually little fluid movement in a disc brake system...just flush it every year and you'll be fine [/Quote]
I would recommend the Heavy Duty case saver, cheap insurance !!