Topic: having a problem bleeding the front brake on the cb350f

[jamesv220820]

well gordon if your reading this i actually got her started

but now i am trying to get her test drive ready and decided to bleed the brakes , ive done this before on another bike but when i was bleeding it, no fluid was coming out just sputtering.  after that i checked the reserve seeing no brake fluid just some on the edge , it wasn't bone dry .

so i added more fluid and continued but it was just sputtering now i know people say this is real bad to have no fluid because air is trapped

so does anyone have any ideas to get the air out do i have to take the lines apart

thanks

james

[wingman]

Have you checked to make sure that the lines are clear in the hoses - that there is no junk clogged up in them?

[jamesv220820]

i guess ill take them off and  check

[jamesv220820]

ya checked them they seem fine now what

[Duke McDukiedook]

Mighty Vac?

[Alan F.]

You'll need to read the FAQ section on brakes, then you'll have a much better take on things.
http://forums.sohc4.net/index.php?topic=259.0

[Fritz]

Hi!

I've had the same problem after rebuilding my brakes. No fluid was coming down through the calipers.
Then I filled in the brake fluid from the caliper side using a big syringe pushing it up through the whole system to the reservoir. This way the brake was air-free in no time.

Cheers
Fritz

[TomL]

Another thing you can try is to make sure the bleed screw doesn't leak air.  You can pump all you want but if when you let go of the brake lever it sucks air back in, you will never bleed them. You cantry wrapping the threads of the bleed screw with teflon tape. It worked for me.  After hours of pumping I got them bled in minutes after taping.

[JohnG]

If you don't have MightyVac or any other kinds of assistance, I learned a couple things by experience:

1) open the resevoir and feather the handle in and out with your fingers, very slowly. Watch for small trails of bubbles coming up at you.

2) take a stick or something and every couple of minutes, gently tap all lines and also the master cylinder. Then go back to step 1).  This helps to get the pockets of air moving around and eventually up to the master.

I don't suggest this as being better than the various suction devices available; only as a productive way if you have nothing.

Beyond that, patience and  determination!!