Bleeding brakes

hagendog · Post by **hagendog** » October 17th, 2007, 8:02 am

So after screwing with the rear brake last night for a good hour I am looking for a little help. I put the front together, filled it and blead it, no problem. I have a bottle and a line hooked to the bleeder and it went fine. The rear on the other hand is a bitch. It is pushing fluid but still no pressure. Should I take it apart again and take the plunger apart? HELP before I start

again. Thanks

dannygraves · Post by **dannygraves** » October 17th, 2007, 8:06 am

I've never had that happen on a bike, but I had it happen with a hydro clutch on a '73 jag e-type (bitchen car I was working on) and it ended up being a bad master cylinder.
Not sure in your case. I'd keep running fluid through it until your sure only the new stuff is coming out si you know there aren't any more air bubbles, if it still does it, then you've got a problem.
you could probably get a master cylinder off one of the guys doing an a/f right now, most of them are parting out old chassis.

Post by **MojoScojo** » October 17th, 2007, 8:10 am

You have to take the caliper off and raise it up so there are no high points in the line for air to get trapped. I just did this. It's a pain.

hagendog · Post by **hagendog** » October 17th, 2007, 8:24 am

I will start by taking the rear off and raising it. I am sure that I have pushed a enough fluid through it, about a half off bottle but still bubbles coming out. I have no leaks, or any that I can find. I rebuilt my 250's and I remember it being some trouble but it eventually made some pressure. Alright, back to the garage, thanks guys

lewisclan · Post by **lewisclan** » October 17th, 2007, 8:39 am

MojoScojo wrote:You have to take the caliper off and raise it up so there are no high points in the line for air to get trapped. I just did this. It's a pain.

x2 and tap on the hyd line with a wrench wile holding up the caliper

Post by **AlisoBob** » October 17th, 2007, 9:18 am

This is all you need...

Rosco-Peeko · Post by **Rosco-Peeko** » October 17th, 2007, 9:33 am

It can be done with the caliper in place. I replaced my rear brake line not too long ago. Keep pushing fluid through and it will eventually (15min or so) build up pressure. Sounds like you have a huge bubble in there. You have to be patient with it.

Post by **AlisoBob** » October 17th, 2007, 9:37 am

Rosco-Peeko wrote: Keep pushing fluid through

pulling...

hagendog · Post by **hagendog** » October 17th, 2007, 12:06 pm

OK, got it. Had a friend come by and hold the rear up and

out came the last big bubble. That was a lot of pushing/pulling or whatever the fuck. Thanks for the help.

Post by **MojoScojo** » October 17th, 2007, 12:42 pm

AlisoBob wrote:
Rosco-Peeko wrote: Keep pushing fluid through
pulling...

It's all about perspective...

Post by **AlisoBob** » October 17th, 2007, 1:04 pm

MojoScojo wrote:
It's all about perspective...

sabreguy · Post by **sabreguy** » October 17th, 2007, 5:36 pm

AlisoBob wrote:This is all you need...

Just fill this with brake fluid and connect it to the bleed screw on the caliper and slowly push the fluid up to the cylinder.

Post by **AlisoBob** » October 17th, 2007, 5:42 pm

I go the other way, and will the master and use the syringe to draw the old fluid out the caliper.

sabreguy · Post by **sabreguy** » October 17th, 2007, 5:45 pm

Six of one half dozen of the other! I suppose!!

coley13 · Post by **coley13** » October 23rd, 2007, 12:17 am

has anyone tryed a womens vibrator? and yes i only mean on the brake line.

dannygraves · Post by **dannygraves** » October 23rd, 2007, 7:30 am

coley13 wrote:has anyone tryed a womens vibrator? and yes i only mean on the brake line.

yes...I keep on in my tool box for emergencies!!!

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Bleeding brakes

Bleeding brakes