peter
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« on: January 04, 2012, 12:52:37 PM » |
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First, I want to sincerely thank all the good folks who tried to help me fix/bleed the clutch master cylinder on my '98 on a previous thread. To my dismay, I am getting no-where - no pressure on the lever no matter what I do. The bike only has 17k miles on it, and the master cylinder and brass bushing appear to work fine. Wouldn't be the first time I screw up a straight-forward procedure. Anybody in the DC area (I'm near Sibley Hospital) that could possibly offer some hands-on help? Would be delighted and happy to pay for your time and effort.
Frustrated and disappointed,
Peter
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'98 Valk '56 BSA '04 Ducati
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9Ball
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« Reply #1 on: January 04, 2012, 01:56:30 PM » |
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you've got air in the line and need to purge it. If you don't have a vacuum bleeder (MityVac, etc.) there is a cheaper alternative that I sometimes use.
Try forcing fresh fluid from the bleeder up to the master cylinder using a syringe and tubing. Make sure there is enough room in the master cylinder to accept the fluid so it doesn't overflow. You can get large syringes with tapered ends from your veterinarian or sometimes the local pharmacy. Purge air from the tubing and syringe before attaching it to the bleeder.
Loosen the bleeder just enough to allow the fluid to be pushed in and watch the master cylinder for the presence of air bubbles. Keep at it until the lever firms up once the bleeder is closed. Go carefully to make sure you don't introduce any air into the system...it helps to have a spare set of hands available.
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VRCC #6897, Joined May, 2000
1999 Standard 2007 Rocket 3 2005 VTX 1300S
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TJ
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« Reply #2 on: January 04, 2012, 02:43:32 PM » |
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A smiple way to bleed it is to just open the bleeder... walk away from it for 5 min at a time till you have fluid coming out... just keep the M/C full...
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Blackduck
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« Reply #3 on: January 04, 2012, 03:57:56 PM » |
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The design of the handle bars is part of the problem, the master cylinder slopes up hill to the discharge.Air can be trapped in the end of the cylinder and not bleed out. Try sitting on the bike and turn the bars to the right so the cylinder slopes down and then pump the cylinder slowly. This allows any air in the cylinder to bleed back into the cylinder. The same applies to the front brake master cylinder. If you still have problems it sounds like you may need service kit for it. Cheers Steve
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2001 Standard, 78 Goldwing, VRCC 21411
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peter
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« Reply #4 on: January 04, 2012, 04:04:06 PM » |
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Ok, I'll give it another try; thanks for the encouragement.
Peter
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'98 Valk '56 BSA '04 Ducati
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Jruby38
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« Reply #5 on: January 04, 2012, 04:46:58 PM » |
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I had the same problem. The best and the only way I could bleed it was from the bottom up, here is how. Buy a big syringe from tractor supply and put 1/4 id tube on it. Open the bleeder on bottom slave , pust he tubbing on it and push the dot 4 in slow with the top clutch cover off. Look close and you will see air bubbles rise to the top. Close bleeder and you are good to go.
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hubcapsc
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Posts: 16788
upstate
South Carolina
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« Reply #6 on: January 05, 2012, 08:31:18 AM » |
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I do the thing with the syringe, but I fill up the reservoir, and use the syringe to suck the fluid down towards the caliper. After some fluid gets going some, I ditch the syringe and bleed like normal, the syringe sort of gets stuff primed. I use speed bleeders, so that helps make it fool/Mike-proof too.
Pushing the fluid up from the caliper is a good idea, but I imagine me making paint-eating spurts of brake fluid come flying out of the reservoir while I'm focused down at the caliper with the syringe... probably not even an issue...
-Mike
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peter
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« Reply #7 on: January 05, 2012, 08:44:36 AM » |
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Thanks all, for your help. Just bought a Mityvac! ($40 Harbor Frieght) - going to give it a try this afternoon. Better work cause I don't want to pay $200 to tow her to a shop. Update later...
Peter
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'98 Valk '56 BSA '04 Ducati
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9Ball
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« Reply #8 on: January 05, 2012, 09:57:22 AM » |
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I had the same problem. The best and the only way I could bleed it was from the bottom up, here is how. Buy a big syringe from tractor supply and put 1/4 id tube on it. Open the bleeder on bottom slave , pust he tubbing on it and push the dot 4 in slow with the top clutch cover off. Look close and you will see air bubbles rise to the top. Close bleeder and you are good to go.
is there an echo in here? 
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VRCC #6897, Joined May, 2000
1999 Standard 2007 Rocket 3 2005 VTX 1300S
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peter
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« Reply #9 on: January 05, 2012, 12:24:07 PM » |
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Well Halle-frickin-lujah. The Mityvac worked great and it took all of 15 minutes. Tons of bubbles came out and the clutch now works great. I guess the simple "bottle" method using the lever as a pump just won't work on a Valk, at least not mine, as the clutch lever itself didn't generate enough pressure to push the bubbles out. The tube will fill with fluid and move slowly, making one believe there is no air in the system, BUT not true - they remain hidden somewhere out of sight until forced out by significant pressure.
Thanks again very much for all the ideas, comments and help! Another victory for VRCC!
Stay away from the cheap under $10 bleeder kits!
Peter in Maryland
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'98 Valk '56 BSA '04 Ducati
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Bone
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« Reply #10 on: January 05, 2012, 01:51:09 PM » |
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Two of my buddies were laughing as they watched me using a Mity-Vac on my 98 Valkyrie. Told them I had bought it for my 85 Goldwing. As the teasing continued they both admitted to never using the front brakes of their HD's because they were a poor design. While the Mity-Vac was dirty they let me try it on their bikes. They couldn't believe how well those big heavy bikes stopped using front and rear brakes  It's solved many unbleed-able brakes and clutches.
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shortleg
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« Reply #11 on: January 06, 2012, 07:33:49 AM » |
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Peter I am uder the weather now, but you can call me if you need. I am in Mount Airy. I am not a super tech , but I could have helped you . I have a Mity Vac. Shortleg[Dave] 
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peter
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« Reply #12 on: January 06, 2012, 09:27:01 AM » |
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Hi Dave,
I certainly remember you when you helped me out at Goody's a long time back - you bled my brakes while BigBF and his brother Thad installed some horns and synced my carbs as I recall. Hope you are doing well and feel better soon 'ole bean and thanks for your generous offer. Hell, I'm an expert at bleeding systems now but I'm certain I could use your support sometime down the line. All the Best, Peter
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'98 Valk '56 BSA '04 Ducati
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donaldcc
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« Reply #13 on: January 06, 2012, 10:19:22 AM » |
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Thanks all, for your help. Just bought a Mityvac! ($40 Harbor Frieght) - going to give it a try this afternoon. Better work cause I don't want to pay $200 to tow her to a shop. Update later... Peter
Join AMA and I am almost positive they will cover your tow from your garage to shop. Don't give up though! First time I did mine I had no clutch at all. As said, air in lines and rebleed worked out OK. Had tough time gettin MC level, loosen and move on bar until level to make it easier. MODIFY: See you got it fixed, Join AMA for when you REALLY need the tow. 
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« Last Edit: January 06, 2012, 10:21:44 AM by donaldcc »
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Don
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gordonv
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VRCC # 31419
Richmond BC
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« Reply #14 on: January 06, 2012, 11:31:18 AM » |
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Join AMA and I am almost positive they will cover your tow from your garage to shop. MODIFY: See you got it fixed, Join AMA for when you REALLY need the tow.  Rather than the AMA, join one of our MC groups, the GWRRA (& Valkyries). For a family covered member ship ($55) you get road side assistance, for extra $25 you get better (100 mile tows). http://gwrra.org/benefits.html
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1999 Black with custom paint IS  
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shortleg
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« Reply #15 on: January 06, 2012, 01:40:19 PM » |
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 Shortleg[Dave]
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peter
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« Reply #16 on: January 06, 2012, 06:05:22 PM » |
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two handsome devils if I say so myself.....
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'98 Valk '56 BSA '04 Ducati
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Tundra
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Posts: 3882
2014 Valkyrie 1800
Seminole, Florida
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« Reply #17 on: September 30, 2012, 04:21:51 AM » |
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 Shortleg[Dave] Hey Shortleg, what brand and size tire is that on the Valk on the right? Looks sinister 
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If you can't be a good example: be a WARNING!!
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shortleg
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« Reply #18 on: September 30, 2012, 04:52:59 AM » |
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I think it is a 205/65/16 Goodyear if memory serves Shortleg[Dave]
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Tundra
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2014 Valkyrie 1800
Seminole, Florida
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« Reply #19 on: October 01, 2012, 02:59:26 AM » |
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I've looked everywhere at on-line photos for tires avaiable in that size. Can't find that tread pattern. Sure looks good though.
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If you can't be a good example: be a WARNING!!
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shortleg
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« Reply #20 on: October 01, 2012, 09:19:49 AM » |
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It,s a goodyear, but can,t remember much more. Shortleg[Dave]
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