Front brakes again!!!

[Slammer]

I rebuilt the front brake master cyl. on both of my Valkyries yesterday. I can't get either one bled or to even move fluid. I've tried my vacuum bleeder with no sucess. any ideas??????

Slammer

[Chrisj CMA]

search....there have been posts about this.......

[Ricky-D]

You've just an air lock in the master cylinder.

Take the banjo bolt out and dip the whole cylinder in a can with brake fluid and work the lever as best you can and see the bubbles rise out of it.

When finished take the master cylinder let it drip drain and when you feel confident enough to put it back on the bike.

Fill it with some fluid and depress the lever a few easy strokes and the remaining bubbles will rise and give you the brake back.

If you don't want to dunk the m/c you can fill the bowl and play with the lever very easily and when you have the movement correct you will see a bubble rise with each movement when you release the lever. That is if you continue with the identical motion.

It doesn't take too much effort but it can take a bit of time to get the air out.

If you try bleeding the calipers with the m/c in this condition you chance getting air farther down in the brake line which then will encompass a total bleeding.

But first you must get all the air out of the m/c to get started.

***

[The Anvil]

Are you sure you've put everything back together in the proper orientation? A properly functioning vacuum bleeder will pull through any air you have in there unless you have something in backwards.

[Slammer]

Thanks for the advise. There are only 4 parts to the kit so I think I got it right. Too much family and food today so I'll try again tomorrow.

[Robert]

I agree with Ricky but not on procedure, just remove the bleeder nipple and hold down the lever, put your finger over the hole and release the lever. Keep doing this till you start to get pressure and fluid out when you do bleed it a few more times and your done. Its you can do both if you cut the wheel correctly and just watch the fluid level while doing this. Vacuum bleeding will not always get out all the air and sometimes will not pull the fluid through.

[Slammer]

Did the trick on both bikes!!!!

Thanks