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Old 11-15-2009, 03:40 AM
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Default Bleeding rear brake????

1998 748
Tried everything, still no pedal. Ideas?
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Old 11-15-2009, 04:14 AM
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Reverse bleed. Take a big syringe (available at farmer's co-op stores), attach a length of hose to it, fill with brake fluid, and push the fluid through the bleeder screw towards the master cylinder. Make sure the reservoir doesn't overflow. Works every time for me and takes all of 5 minutes.

OR

You could try SpeedBleeder bleeder screws.

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Old 11-15-2009, 04:15 AM
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or a vacuum pump.
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Old 11-15-2009, 06:10 AM
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I remove the rear caliper so that the bleed screw is pointing upwards This has worked for me.
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Old 11-15-2009, 03:29 PM
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Quote:
Originally Posted by BC999S View Post
You could try SpeedBleeder bleeder screws.
I have speedbleeder on my rear brake and it makes things easier but I still need to remove the caliper and hold it up to get all the air out.

But why do these brakes constantly need bleeding? where does the air come from? is there a definitive fix?
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Old 11-15-2009, 04:22 PM
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Quote:
Originally Posted by BC999S View Post
Reverse bleed. Take a big syringe (available at farmer's co-op stores), attach a length of hose to it, fill with brake fluid, and push the fluid through the bleeder screw towards the master cylinder. Make sure the reservoir doesn't overflow. Works every time for me and takes all of 5 minutes.

OR

You could try SpeedBleeder bleeder screws.

I did reverse bleed!!!
I'll take the caliper off and reverse!! I wouldn't care because the brake is useless anyway...at the track....never touched it! But it's gonna be a street bike now and I might have to use it.
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Old 11-15-2009, 05:59 PM
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Here's a tip from a number of years ago. Some of the brembo calipers on various brands had a crappy bleeder nipple that didn't seat well. Note that they didn't leak fluid but will admit air. So for a couple bucks stick a new bleeder screw in it and see if that does the trick.
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Old 11-15-2009, 08:56 PM
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Just loosen the bolt that the line is connected to and push down until fluid comes out, then retighten......do that like 4 times then you know you have fluid in the line, then start the process of bleeding it by the nipple again.....this works!
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Old 11-16-2009, 02:40 PM
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Thanks all. Holding the caliper with the bleeder up did the trick!
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Old 11-16-2009, 09:10 PM
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Funky hose, dude!
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Old 11-16-2009, 10:00 PM
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Funky blue fluid.
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Old 11-17-2009, 01:33 AM
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Is that silicone Dot 5 fluid? I had a tough time bleeding with this fluid thinking it was better than Dot 3 or 4 or 5.1. Went back to Dot 4 and after a full flush, bleeding didn't take half as long before I got full pressure.
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Old 11-17-2009, 02:06 PM
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The hose is for bleeding.
The fluid is this...

All I use in my bikes!!
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Old 11-17-2009, 04:16 PM
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Quote:
Originally Posted by DukeDesmo View Post
I have speedbleeder on my rear brake and it makes things easier but I still need to remove the caliper and hold it up to get all the air out.

But why do these brakes constantly need bleeding? where does the air come from? is there a definitive fix?
Do these need constant bleeding? I know I flushed mine once, and thought I had air when the pedal went away. I decided that since it recovered after sitting that I had been inadvertently applying it, and just boiled the fluid. I bought an adjustable lever and made sure I wasn't stepping on it. Never really use it much as it doesn't do much, and if it does appear to work it is locking the wheel as it unloads the rear entering a corner. Last time I really needed it (wheelstand) there was nothing. I was thinking, how could air get in there, oh well better go bleed it. I was going to remove the caliper when I noticed that my Ferodo free floater was really free. All the buttons had disappeared. Anxious to ride I went and got a solid EBC and pads. No bleeding and no problem since. Even seems to function a bit.
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Old 11-17-2009, 09:55 PM
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WTF! Glad I haven't had to touch my rear brake in 5 yrs of track use!
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