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Master Cylinder piston won't come out.
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ThomasTedder
Master Cylinder piston won't come out.
I'm trying to get the master cylinder apart to rebuild it, but I can't get the piston out. I've soaked it in PB Blaster for about two days now. I've even tried using compressed air. Still won't budge. Yes the circlip is out. Any ideas?Tags: None
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Originally posted by ThomasTedder View PostI'm trying to get the master cylinder apart to rebuild it, but I can't get the piston out. I've soaked it in PB Blaster for about two days now. I've even tried using compressed air. Still won't budge. Yes the circlip is out. Any ideas?"Nobody goes there anymore, it's too crowded" -Yogi Berra
GS Valve Shim Club http://www.thegsresources.com/_forum...d.php?t=122394
1978 GS1000EC Back home with DJ
1979 GS1000SN The new hope
1986 VFR700F2 Recycled
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Since you're going to rebuild it anyway drop it in a can of Berrymans.
The heat idea sound good too.Last edited by chef1366; 02-03-2009, 01:12 PM.1983 GS 1100E w/ 1230 kit, .340 lift Web Cams, Ape heavy duty valve springs, 83 1100 head with 1.5mm oversized SS intake valves, 1150 crank, Vance and Hines 1150 SuperHub, Star Racing high volume oil pump gears, 36mm carebs Dynojet stage 3 jet kit, Posplayr's SSPB, Progressive rear shocks and fork springs, Dyna 2000, Dynatek green coils and Vance & Hines 4-1 exhaust.
1985 GS1150ES stock with 85 Red E bodywork.
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almarconi
Its probably just stuck from years of neglect. Use the PB blaster and let it soak. I've removed one from an 850L that was pretty stuck. Try this.. put the brake lever on the mc body with the bolt but reverse it so the hook part of the lever catches the lip on the mc piston. Basically it works like a pry bar. Work it back and forth to raise the piston. Don't go crazy and put gorilla force on it cause you don't want to break the lever. I found this worked better than a pair of pliers because it was hard to get the pliers into the well around the piston. Hope this makes sense.
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ThomasTedder
Can't do the PB in the house. My wife swears we're all gonna die from cancer every time she thinks she smells a fume.
I was considering the Berrymans. In a few more days, after the carbs are done soaking I'll try this if it's still stuck.
almarconi, I'm trying to imagine in my head how to use my lever as a .....lever. Could you please explain this a little better?
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nisom512
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almarconi
almarconi, I'm trying to imagine in my head how to use my lever as a .....lever. Could you please explain this a little better?
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ThomasTedder
Originally posted by almarconi View PostInstead of trying to explain it..I took some pictures..The mc I have is for an L type bike..
http://www.thegsresources.com/_forum...hp?albumid=316
Well I just tried that, but the shoulder was already rounded off from the screwdriver I was using to pry with. Good idea, though.
Any other ideas?
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almarconi
Try some heat and maybe a needle nose vise grips. Are you going to buy a rebuild kit for the mc. If the piston is toast you can try putting a rod in through wear the banjo bolt threads into and driving the piston out.
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almarconi
I would get another master cylinder. Once you get it out you may find the bore is not serviceable anymore.
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ThomasTedder
Originally posted by almarconi View PostTry some heat and maybe a needle nose vise grips. Are you going to buy a rebuild kit for the mc. If the piston is toast you can try putting a rod in through wear the banjo bolt threads into and driving the piston out.
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ThomasTedder
I was able to fit it in with one of the carbs in the Berryman's. I'll try again after it has a good soak.
Originally posted by duaneage View PostIf you do get it apart use a shotgun cleaning brush to remove rust from the entrance. I find it is the perfect sized tool for the job and the brass won't scratch the harder steel.
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