Brake bleeding problems? Look here, fail proof bleeding - Suzuki GSX-R Motorcycle Forums Gixxer.com

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post #1 of 371 (permalink) Old 10-17-2010, 10:46 AM Thread Starter
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Brake bleeding problems? Look here, fail proof bleeding

Fail proof bleeding. ........... TRUST ME

Get some teflon tape.
Get some clear aquarium hose.
Get a catch bottle for the fluid
Get a wrench to fit bleeders (8mm on most)
Get a phillips screw driver to remove reservoir lid
Get a NEW UNOPENED BOTTLE of QUALITY brake fluid. IMPORTANT!!.
Only takes one person

Put tape on the threads of the bleeders, being careful not to get it so low on the bleeders as to get under them. The teflon tape is important to keep air from seeping past the threads on the bleeders and into the system, as well as keeping the bleeder in place while you pump the lever. The tape is one of the critical parts here. If you wish to not use tape, another option is thread sealant by speed bleeder http://compare.ebay.com/like/3904868...Types&var=sbar. The thread sealant is what makes speedbleeders work really. The hose I am attaching to the nipple of the bleeder once it has fluid in it (after first pump) acts just like the check valve in speedbleeders. Since you need the hose anyway to not make a mess, the check valve is pointless. The key is the sealant on the threads to prevent air seeping past the threads.

Forget the "Pump pump pump, crack.... close... repeat" method. It sucks.

Attach the hose to the bleeders. Run that hose to a catch bottle well above the nipple you are bleeding, so you keep a column of fluid in the hose on top of the bleeder. This column of fluid in the hose on top of the nipples is very important to keep air from going back in the system

Crack the master cylinder bleeder, just enough that you still have some pressure on the lever as you pull it, but fluid is coming out of it also. pump until you get clean clear fluid out of the MC bleeder. I usually run one entire reservoir of fluid through the bleeder. I have also found that letting the lever "snap" back out helps. I am not sure why. It may knock stuck bubbles loose, or cause small bubbles to make bigger bubbles. But it sometimes helps, especially when trying to prime a new system. Re-fill reservoir and move to lower right caliper.

Tap lines lightly with something

Crack bleeder on lower right caliper (with teflon tape on it) again just enough that fluid will pass out of it, but there is some effort at the lever. Run an entire reservoir through it. Close bleeder.

tap on lines again

Repeat with left caliper.

Repeat at all three bleeders, (meaning do this TWICE at EACH bleeder) using about one full reservoir at each bleeder.

remove all hoses and catch bottles. Clean up and ride.



Trust me, you will thank me later. Assuming you dont have a mechanical issue, you will now have the most firm lever you have ever felt in your life.


Some people argue going through that much fluid is "a waste". Truth is once a bottle of fluid is opened it is garbage anyway. So with that said, might as well run it through the system to flush out old fluid and bubbles before you throw the bottle away. Once it is opened it has started absorbing water from the atmosphere and is GARBAGE





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Last edited by Moto_Joe; 01-26-2013 at 01:33 PM.
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post #2 of 371 (permalink) Old 10-17-2010, 11:48 AM
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Re: Brake bleeding problems? Look here, fail proof bleeding

Excellent write-up, Joe.
Wish I had known this method a couple weeks ago.....it would have saved me much time and frustration.
I ended up purchasing a Mighty-Vac to get the job done, although I doubt it provides better results than your method.
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post #3 of 371 (permalink) Old 10-17-2010, 11:55 AM Thread Starter
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Re: Brake bleeding problems? Look here, fail proof bleeding

I have worse luck with a mityvac. mine is rotting in a corner somewhere. I never use it. I think I tried to use it maybe 5times, and every time ended up doing it "my way" in the end



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post #4 of 371 (permalink) Old 10-17-2010, 11:58 AM
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Re: Brake bleeding problems? Look here, fail proof bleeding

Subscribed for future referance.........
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post #5 of 371 (permalink) Old 10-17-2010, 02:53 PM
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Re: Brake bleeding problems? Look here, fail proof bleeding





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post #6 of 371 (permalink) Old 10-17-2010, 03:51 PM
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Re: Brake bleeding problems? Look here, fail proof bleeding

i use the teflon tape on the bleeders and then the mityvac. if you dont use the teflon tape you will see air bubbles in the clear hoses forever
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post #7 of 371 (permalink) Old 10-31-2010, 12:48 AM
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Re: Brake bleeding problems? Look here, fail proof bleeding

thnx for putting me outta misery...been suffering with brakes that seems to fail after a while and i think this is the best way to change the fluid and get a better braking..
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post #8 of 371 (permalink) Old 11-01-2010, 02:03 AM
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Re: Brake bleeding problems? Look here, fail proof bleeding

I was going to try this technique.

"Put tape on the threads of the bleeders, being careful not to get it so low on the bleeders as to get under them."

Can you explain this some more? Is it simply a case of wrapping the teflon tape around the threaded part of the bleed nipple and what do you mean by being careful not to get it so low on the bleeders as to get under them?
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post #9 of 371 (permalink) Old 11-01-2010, 03:26 AM
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Re: Brake bleeding problems? Look here, fail proof bleeding

Nice write up! Next time I'll know not to do the method of opening and closing the nipple.
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post #10 of 371 (permalink) Old 11-01-2010, 06:30 AM
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Re: Brake bleeding problems? Look here, fail proof bleeding

I always hated the vacuum too. It'd suck air in around the bleeder, even with teflon tape. Heavy grease would work, but made a big mess of things.

I just get my son involved now. I've done it by myself the way you're talking about and it works great. But a little father and son time is good too. He loves sitting on the bike an pumping the brake for me.
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post #11 of 371 (permalink) Old 11-01-2010, 02:33 PM
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Re: Brake bleeding problems? Look here, fail proof bleeding

Quote:
Originally Posted by Mr Luke View Post
I was going to try this technique.

"Put tape on the threads of the bleeders, being careful not to get it so low on the bleeders as to get under them."

Can you explain this some more? Is it simply a case of wrapping the teflon tape around the threaded part of the bleed nipple and what do you mean by being careful not to get it so low on the bleeders as to get under them?
yes its that simple. he means you don't want it so low that the teflon gets underneath the bleeder and gets stuck there. probably has to do with the teflon disintegrating
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post #12 of 371 (permalink) Old 11-01-2010, 03:21 PM Thread Starter
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Re: Brake bleeding problems? Look here, fail proof bleeding

The bleeder works by pressing on a seat when you screw it down. If the teflon gets into the seat (the cone shaped part inside the bleeder) it can cause them to leak ever so slightly. Make sure to use only enough that it covers the threads, but not so much that it will get into the seat area



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post #13 of 371 (permalink) Old 11-02-2010, 12:03 AM
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Re: Brake bleeding problems? Look here, fail proof bleeding

There is another way it can be done.

1) Use a large syringe. Fill with fresh fluid.
2) Empty master cylinder.
3) Put syringe on caliper bleed nipple.
4) Open nipple and pump fresh fluid into caliper bleed nipple. Close nipple while still pumping.
5) Empty excess fluid from master reservoir.
6) Do other caliper same as in 4) above.
7) Check for bubbles in the master reservoir as it fills. Repeat procedure until no bubbles are seen. I get a hard lever first time everytime with this method.

Bubbles like to float upwards so reverse bleeding works with gravity. Although the lines are pretty thin so I don't know how much difference it makes.

Better than suction IMO due to the air leaks around the nipples causing bubbles which confuses detection of where the air is coming from.

Make sure the nipples are clean internally before pumping fluid into them so as to not contaminate the brake system.
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post #14 of 371 (permalink) Old 11-07-2010, 06:13 PM
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Re: Brake bleeding problems? Look here, fail proof bleeding

click.
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post #15 of 371 (permalink) Old 11-08-2010, 08:41 PM
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Re: Brake bleeding problems? Look here, fail proof bleeding

Great write-up!
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post #16 of 371 (permalink) Old 11-13-2010, 10:19 PM
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Re: Brake bleeding problems? Look here, fail proof bleeding

Wish I knew about this when I had to rebuild my master cylinder. Thank goodness, I was able to get it done.
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post #17 of 371 (permalink) Old 11-13-2010, 10:35 PM
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Re: Brake bleeding problems? Look here, fail proof bleeding

most MC shops carry the automatic vaccuum bleeder for around $45....hook up hose, pull trigger...vaccuum sucks air out. Yea kind of expensive...but to bleed your breaks withOUT having to read 50 write ups to find the best one or take longer than 5 minutes to do it is awesome

pays for itself pretty much the first time you use it...especially at the track when time is crucial between sessions.
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post #18 of 371 (permalink) Old 11-14-2010, 09:04 AM Thread Starter
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Re: Brake bleeding problems? Look here, fail proof bleeding

Quote:
Originally Posted by Lean With It View Post
most MC shops carry the automatic vaccuum bleeder for around $45....hook up hose, pull trigger...vaccuum sucks air out. Yea kind of expensive...but to bleed your breaks withOUT having to read 50 write ups to find the best one or take longer than 5 minutes to do it is awesome

pays for itself pretty much the first time you use it...especially at the track when time is crucial between sessions.

MityVacs basically suck, and rarely get it done as well as a good bleeding can. It might be good enough for street use, but track use I have never had a mity vac provide fade free bleeding



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post #19 of 371 (permalink) Old 11-16-2010, 02:26 AM
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Re: Brake bleeding problems? Look here, fail proof bleeding

my breaks had been feeling spongy but i kept putting off the bleeding process. your thread inspired me and it worked a treat. goo post
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post #20 of 371 (permalink) Old 11-16-2010, 05:56 AM
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Re: Brake bleeding problems? Look here, fail proof bleeding

Interesting write up. I will try this method when I get my new (old) 600 k1. When you say:

Quote:
Originally Posted by Moto_Joe View Post
Crack bleeder on lower right caliper (with teflon tape on it) again just enough that fluid will pass out of it, but there is some effort at the lever. Run an entire reservoir through it. Close bleeder.
I am a little confused, so to clarify, you open the bleeder just a fraction so there is resistance to pull the brake lever, and then you just pump away without opening/closing the nipple?(while topping up the reserviour of course)

Sorry to be a pain happy riding.
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