hel brake lines, pics and advice?

Hel`s are a pig to bleed , I have some on mine , you definately still have air in those lines , fill the reservoir up and extract from the bottom with the syringe , keep the syringe with the plunger facing upwards so all air floats to the top of the syringe then tighten the nipple up , top up the reservoir to the line and then try the brakes HTH .

You only have to crack the nipple open slightly as if you open it too much you will suck air past the nipple and into the Syringe making you think you still have air in there .

[Bibio]

Originally Posted by xXBADGERXx

You only have to crack the nipple open slightly as if you open it too much you will suck air past the nipple and into the Syringe making you think you still have air in there .

ok another top tip from the bibio book of brakes... theeheehhee

if your system is empty take off your bleed nipples and put some plumbers ptfe tape on the threads, when winding the tape on put it on anti-clockwise and dont go as far down as the pointy bit just cover the threads with a few turns, pop them back in and viola, no more fluid leek or sucking air.

another thing is goodridge self bleed nipples work a treat.

Ah - this is what happenened with me. I had to pull the callipers off and lift them up as high as possible. Tie them off on a rafter or find an extra pair of hands. The idea is to move them around or tap them so the air comes out of the nipple. Leave the nipple open with the hose running into a can and keep pumping the brake leaver until the fluid is clear. Make sure the hose and can is higher than the calliper as you want any air running up the hose and not back into the calliper. It's important you dont let the reservoir go empty or you will get more problems so keep filling it when it goes down. Once its running clear with no sneaky little bubbles tighten and repeat with the other. This works with the back brake too.

Originally Posted by xXBADGERXx

You only have to crack the nipple open slightly as if you open it too much you will suck air past the nipple and into the Syringe making you think you still have air in there .

i think thats whats happening, either that or the pipe isnt fitting the nip securely enough. ill try it tomorrow, iv given up on it for tonight

maff

[Nicky S]

Originally Posted by stoppy!

do i need to replace the lid of the master cylinder

nope

It might just take a lot of doing. Sometimes bleeding can be a REAL pain in the ****.

Hope you manage to give the air the boot mate

[Viney]

Mr Stoppy, you need to do this.

Probably easier with two of you. Get one to pump the lever and the otehr to open and close the nipple.

You will need a length of clear tubing
A pot for the fluid
8 or 7mm spanner (I forget which)
Brake fluid.

1. Fill resiviour up with fluid
2. Attach clear pipe on the nipple
3. Pull the lever in
4. Open the nipple
5. Count to 3
6. Close the nipple
7. Release the lever
8. Pump lever and pull in
9. Open nipple
10. Count to 3
11. Close nipple

Do 3-11 about 6 times until you have fluid in the clear pipe then move to the opposite side. Repaet about 5 times a side and you should start gettting some feeling in the brake lever.

NEVER RELEASE THE LEVER WITH THE NIPPLE OPEN! This will allow air to be sucked into the system.

Then over night cable tie the lever to the handle bar and this should be it. If not, then try the syringe method. Again, when opening the nipple pull the leve in just a fraction to load up the hydrualic system, open the nipple whilst pulling on the syringe. Dont ever push it and close the nipple before you release the suction!

Originally Posted by Bibio

so why does air come out of the system when you cabletie your brake lever overnight?

Because, overnight the bubbles will rise to the top. When you untie the lever the next day, the m/c piston moves back and lets the bubbles out through the reservior.

At least that's the theory - I've never had any luck tying the lever back.

thanks mr viney i shall try it that way instead

iv found that pumping fluid in from the nipple end is causing fluid to work its way up through the thread of the bleed valve itself and escaping that way

ok iv been going since about nine this morning. iv got no air bubbles coming from either caliper but absolutley nothing in the brake lever, iv rendered my bike useless