How do you bleed the brake line?

by Charjack

How do you bleed the brake line after changing the fluid reservoir and handle? After changing the reservoir, we can't get brakes to pressure up.

There's also an O ring missing from the bottom of the abb cylinder; does this cause an air leak?

Comments for How do you bleed the brake line?

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Oct 23, 2014
bleeding any brake line NEW
by: Anonymous

I learned a tip years ago about a simple way to bleed brakes when you don't have another person and it is also a surefire way to get rid of air.
Fill a small mason jar with new brake fluid and attach appropriate size clear hose to your bleed nipple.
Then you can just keep pumping the brakes and filling the reservoir until you see no air bubbles in the line. the air cannot get sucked back into the line when you let off the handle because it is submersed into the fluid in the jar.
When no bubbles are visible in the clear hose, just tighten bleed nipple and remove the hose.
NOTE: you must keep an eye on the reservoir and keep it full during this process.

May 24, 2010
Bleeding the brakes
by: Izzy

You might have a bad caliper or master cylinder.

May 24, 2010
Bleeding brakes doesn't work>
by: Anonymous

I have a Kymco 250 People scooter and my left brake is soft. I've put brake fluid (Dot4) in and tried to pump and bleed. It stays soft. I don't seem to have a leak anywhere. What should I do?

May 21, 2010
Bleeding the brakes
by: Izzy

The job is not too hard. First you must pump up the brake handle till it gets stiff. Then while holding pressure on the handle, loosen the bleeder valve and let the fluid and air out. This may take a few time to do, but can be done. As far as the O seal goes. I'm not sure if it is needed or not. I don't have any on my brakes.

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