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Old 09-10-2012, 09:46 PM   #1
Reemdog
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Low to No clutch pressure

A week ago I noticed I had to. Pull the clutch lever in more than before to disengage, this week it it would not completely disengage at a stop (still wanting to roll in gear) so I checked the resivour* and it was extra nasty. So I cleaned completely out and bled. I was getting some pressure back but then I lost it completely. I pumped and pumped the clutch but I can't get it back.

Wtf I'm bleeding and bleeding it but nothin do I still need to keep on? Wher did I go wrong
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Old 09-10-2012, 10:26 PM   #2
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I've been told you can bleed lines by tieing them all the way to the bar overnight and it will force any air out. I'm not 100% if this is good practice or not, nor am I familiar with hydro clutchs. Sounds like you still some how have air, or theres a leak somewhere allowing fluid to slip by or air to slip in therefore losing pressure. I have been told sometimes you have to do multiple good bleeds in order to get ALL of the air out. Good luck though.
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Old 09-10-2012, 10:55 PM   #3
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my guess is you clutch master cylinder needs to be rebuilt or replaced.

also are you bleeding at the top as well?
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Old 09-11-2012, 07:59 AM   #4
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How are you bleeding it? Hydro clutches are notoriously difficult to bleed.
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Old 09-11-2012, 08:17 AM   #5
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Pull the clutch slave cylinder amd look for signs of it leaking/bypassing.
If there are none and the line is free of air you'll probably need to rebuild the clutch master cylinder.
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Old 09-11-2012, 08:41 AM   #6
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Quote:
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Pull the clutch slave cylinder amd look for signs of it leaking/bypassing.
If there are none and the line is free of air you'll probably need to rebuild the clutch master cylinder.
I had issues with my hydraulic clutch too. Same issues you describe. Replaced fluid, bled and bled and bled. Also replaced the master cylinder. Pressure would build, shortly thereafter I would lose pressure. I finally resolved the issue by replacing the slave cylinder. I found one on ebay.

The slave cylinder I removed.. I clean and put on the other motorcycle and it worked fine too. If I recall correctly there is an o ring in there too that may need replacing.
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Old 09-11-2012, 11:00 AM   #7
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I am bleeding the messy way and just repeatedly squeezing the lever untill nothing but fluid comes out.

how difficult is the rebuild, or how long is it "suposed" to take i dont have a lot of daylight left by the time i get home. lol
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Old 09-11-2012, 11:02 AM   #8
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Quote:
Originally Posted by Reemdog View Post
I am bleeding the messy way and just repeatedly squeezing the lever untill nothing but fluid comes out.

how difficult is the rebuild, or how long is it "suposed" to take i dont have a lot of daylight left by the time i get home. lol
If ur not using a vacuum to bleed the lines I would try that first. Go buy the vacuum kit at Harbor Freight....
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Old 09-11-2012, 11:03 AM   #9
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stupid hyro clutch, are they any better than the cable
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Old 09-11-2012, 11:06 AM   #10
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yeah that will be my first stop after work i think that will solve my problems, i was almost there before it cleaned out that resivors* and let all that air in
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Old 09-11-2012, 05:33 PM   #11
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I had a hydro clutch on my vulcan, when I bled mine I always loosened the fitting right next to the reservoir just pump it about four or five times then hold it and break that fitting loose and it should spew a little out then move on down th line. Also take off the cap and look down in the bottom of the resorvoir and see if there is a supply hole ( like a 16th of an inch big) and a return hole. If there is only one hole, the other is most likely clogged. In my case I just used a tip cleaner for a oxy/acy torch and it worked fine.. Let us know
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Old 09-12-2012, 09:17 AM   #12
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So i went and got a vaccume tool and it was the best thing i ever baught. there was so much air in there and gunk that i would have been stuck without it. thanks autozone . now i got leak in the res. nothing a new gasket cant fix
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