Topic: Bleeding brakes

[Johnny5]

I know this has been covered a hundred times and used the search function but couldnt find my answer.

I have a 77 CB750k. I took apart the brake caliper, cleaned the piston and cylinder, used silicone grease and reinstalled everything. The fluid was completely emptied obviously so I buttoned everything up and filling the master cylinder with fluid and I cant get the system to prime. Only getting small bubbles from the master cylinder. I tried pumping with the bleed nipple open and closed. Right now, I have the brake lever held depressed with a strap hoping fluid will eventually leak into the system.

Any tips on how to prime the system? Or do I just keep pumping?

Thanks,

[Bob Wessner]

Did you see this? Maybe it will help.

http://forums.sohc4.net/index.php?topic=259.msg207521#msg207521

[Johnny5]

Man, didnt even see the FAQ. Feel silly.

Thanks!

[Hush]

I have a new word for you....MICROBUBBLES, these little suckers will keep bubbling up for days but eventually they stop and your brakes work again.
My advice (after of course you check out the FAQ;s) is get it as good as you can then leave it and have a beer, go back to it and hour later and squeeze the lever some more...then go have another beer.....continue this until you are too drunk to ride anyway or the brakes stop bubbling.
It took me 3 days to remove them little buggers from my sysytem...........Hush.

[bryanj]

First WEAR GLOVES and cover everything

Remover banjo bolt and pipe from master a put gloved finger over outlet

pull in lever and whilst holding in lift finger from outlet and replace

let go lever and pull in and hold again lift and replace gloved finger

keep repeating until master cylinder builds pressure and fluid squirts out under finger (thats why you cover everything!!!)

whilst holding in lever reconnect pipe with banjo bolt and now bleed via bleed nipple

[Johnny5]

I wont be riding the bike anytime soon as it doesnt have the engine in and it's 20 degrees outside...and the bike is in the basement...and..

Thanks for all the suggestions. I got most of the bleeding done last night. I'll continue to bleed for a couple more days and make sure all those bubbles are out. Im using a clear hose from the bleed nipple so I can see the bubbles.