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Clutch fluid missing

Old 04-19-2017, 03:55 PM
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Clutch fluid missing

So recently I have had to add clutch fluid. First time this has happened. No visible signs of leaks at either banjo and hose is a new SS one.

Whats my next check/fix the slave seal?
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Old 04-19-2017, 03:58 PM
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Yep. Happened to me recently. It was nasty in there and way overdue for a rebuild. I also hit the master too just to complete the system.
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Old 04-19-2017, 04:01 PM
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Here is the thread with the part numbers. Parts were cheap enough that I just replaced them all with OEM. Master kit was a made in Japan K&L.
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Old 04-19-2017, 05:21 PM
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Is it a drive out press in deal? Any special tools?
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Old 04-19-2017, 05:45 PM
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Zero special tools. Just replace rubber seals, nothing special needed.
Clutch fluid missing-20161205_125441.jpg
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Old 04-19-2017, 05:58 PM
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Cool man thanks, ordered mine.
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Old 04-19-2017, 06:08 PM
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Your fluid is probably in there mixing it up with gunk. Mine was horrid. I was a bit ashamed it got that bad.
Clutch fluid missing-20161205_125349.jpg

Clutch fluid missing-20161205_125356.jpg

Clutch fluid missing-20161205_125408.jpg
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Old 04-19-2017, 06:10 PM
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Found this last year. Before that, I've always relied on vac (mitivac). This method works much better IMO.
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Old 04-19-2017, 06:51 PM
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More good info thanks again. I have one of those syringes for fork oil.
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Old 04-24-2017, 02:32 PM
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Haha, ok so that was for sure the nastiest part on the whole bike. Totally caked with crud. Scrubbed it, honed it with 400 grit, installed the rebuild kit. Quick bleed and hopefully its ok.

Will test ride soon.
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Old 04-24-2017, 03:13 PM
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Should be ok unless you push some of that crud down from the master.

This was a cbr1k I refurb'd a few weeks ago. Mine wasn't near this bad but it did have a little in there.
Clutch fluid missing-20170324_112909.jpg
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Old 04-24-2017, 06:33 PM
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But that's the master right? I should look at that too but I am good about changing and flushing fluid. The slave was worse than anything you pictured above. Glad its done.

Now for the van door power lock actuator.......
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Old 04-24-2017, 06:43 PM
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It is, yes. But if your slave was that bad, chances are the master has some goop too. I'm pretty good with fluid changes as well, but it happens...
I really didn't need a kit, a good thorough cleaning would have sufficed but I figured while I was in there, might as well.
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Old 04-24-2017, 07:01 PM
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I really should look at the master too, but will have to wait a few days. Looks like rain the next 2 days so I will commute but probably wont wrench.
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Old 04-24-2017, 07:07 PM
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High humidity isn't the best time to do brake work anyway

Heat wave is coming later this week. Eager to get back aboard, I detailed both bikes so I can ride with pride.
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Old 04-24-2017, 07:26 PM
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Yeah like Thursday for us, guessing it gets to you sooner. I am slightly sick of commuting in the rain but its a pretty easy ride compared to last year. I washed the bike today but its wet tomorrow so short lived clean.
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Old 04-26-2017, 06:23 AM
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Originally Posted by smokinjoe73 View Post
But that's the master right? I should look at that too but I am good about changing and flushing fluid. The slave was worse than anything you pictured above. Glad its done.

...
The closed system is a bit funky for fluid changes in that, just pumping fluid from MC res to the slave bleeder does not tend to carry out with it contaminants, to include sluge that has built up form the water absorbed into the hygroscopic fluid we use.

that sluge continues to build with every bit of atmospheric moisture that makes it into the system until it builds enough compressibility to hinder correct operation, or corrodes, damages the seals, piston, cylinder to cause an issue.
The only way to "clean" the hydraulic system is to disassemble and really clean each part.
You can delay that for years by replacing fluid a couple of times a year.
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Old 04-26-2017, 07:07 PM
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Yeah, the cleaning of the master is on the list but after this monsoon passes.
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Old 04-26-2017, 07:13 PM
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Once a year for me. Usually in the spring but not during the monsoons cause the air is too moist. I like the Motul rbf600, it's very thursty though, lol.
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