I lost braking power in the front. I replaced the pad and I sill have no power in the brakes. I can move the tires on a full brake. We blead the brakes or at least think we did..
Here is what we did.

Loosened the valve on the calliper and squeezed fluid out and ran the master rezzy low. We did keep a finger on the valve to air would not get back in and the fluid squirted out..

Then with the braked depressed we put tighetned the valve and then did the other side.

With the calipers off we are able to pust the pistons out with preasure but its not like it should be.


Did I bleede this system correctly?? I looked in the manual and they talked about emptying the line entirly then sealing the bottme then use a bleader tube? what is that? then they say the pump until they get resistance? Man I get no resistance at all.. What did I do wrong, what do I need to do?
Is my master cylinder shot?? Help me quick guys, I am riding saturday AM for a 2 day trip :S

 

Motion pro makes a kit.

But, if you go to Home Depot you can probably make your own. Get some small clear plastic tubing and see if they have a check valve you can attach to the tubing.

You just push the tubing over the top of the bleed screw then connect the tubing to the check valve then connect more tubing to the outlet of the check valve and run it to a collection jar.

If you can't find the check valve just use a descent amount of tubing and watch the fluid come out. You will probably be suprised at the amount of air bubbles come out. You can leave the lid off the res. on the bars and you may end up finding less fluid in it by the morning - air rises up during the night. You can also tap and lightly shake the brake lines (especially at high points) to drive the air up to the bars and out of the lines.

Good idea to bleed every couple years to get the old fluid out anyways.

 

You can bleed them with out a kit

I would advise the piece of tube on the nipple to keep the fluid off the paint as it is corrosive.

All you need to do is pump the brake a few times then while holding it on have your friend open the bleeder a little fluid will come out then close the bleeder , then release the lever . repeat these steps doing one side then the other and eventualy the feel will come back.
to the lever. Im at work now so i cant look at my bike but if the hoses are rooted in such a way that there are any high spots ie the fluid is traveling up hilll this can cause a big bubble to get trapped. So try and position them or the bike so that the fluid only has to go down.

If you are still having no luck try tying the brake lever in the on position and leaving it fot a few hours this can force lots of small bubbles to become one big bubble and make it easier to push out.

The tapping thing also works

good luck

 

Mudstud
I would try AutoZone, Checker or Pep Boys and ask for a Brake Bleeder kit.
The kit has clear hoses, a small catch container and plastic nipples to insert into the bleeder.
The kits are inexpensive and come with the instructions.
When I changed out my brake lines for steel it took a while to get all the air bubbles out. In fact, I had to refill the reservoir numerous times.
Weather you buy a kit or build your own, when you’re ready to bleed the brakes the proper sequence is;
Loosen the bleeder, apply the brake, (air & fluid will come out) tighten the bleeder, release the brake, and repeat until you see no air bubbles in the clear tubing.
If you let the brake reservoir get empty (during brake compression) you'll just push air into the lines. You need to keep adding brake fluid to prevent this. Also, if you forget to tighten the bleeder between brake compressions you’ll just suck air when you release the brake.
Lastly, make sure you have a new bottle of brake fluid (dot 4), as you don’t want to reuse your old fluid.

 

Let me know what you come up with........................ my front brakes have never been good at all and I keep bleeding them with no improvement. Maybe my Master Cylinder is bad. Post up if you find a solution.

 

It sounds like you bled the system but as mentioned the air can get trapped in high points. One of the high points is right where the hose attaches to the reservoir. I had the same problem on a street bike and all I did was remove the lever and tip the end of the lever upword. Do this with the res cap on the reservoir!!!. This will make the reservoir the highest point in the system. When in this position work the brake slightly (not hard enough to pressurize the system) a few times and the air will lislodge and go into the reservoir. It works!!

 

Well,, I got my bleeder kit today and I bled for a long time. THey are still REALLY soft. I will try the tilt trick in the morning.. Other wise I have another rezzy tomorrow...

 

let us know how it goes.