Front brake

[promufa]

Hey guys,

The bike is a 02 speed four. It's got Nissin 4 piston callipers. A single line goes from the master cylinder to the right calliper and a second line goes from the right to the left calliper. I have realised that my front brake has become a bit spongy so I bled the brakes, got some contaminated fluid and a couple of small air bubbles from the right calliper.

When I moved to the left calliper, again a bit of contaminated fluid and lots of air. No matter how many times a press the lever, air keeps coming out. Also, when I press and then tighten the nipple, normally the brake fluid should not move in the draining line (should it?) In this case it does...

Is it a problem with the nipple being leaky and letting air into the system or could it be piston seals?

Thanks
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'02 Triumph Speed Four

[promufa]

*bump* any ideas anyone?
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'02 Triumph Speed Four

[CaNsA]

flush out the old fluid, replace the copper crush washers.

[Casper]

You can heat the washers over the gas cooker until they glow and let them cool on there own for another shot. Get a bit syringe and bleed from the nipple up but it sound like you have shit under your nipple. Gee it a clean or get new ones.

https://www.youtube.com/watch?v=lBk00597EyE

[Nick_Giles]

[promufa]

OK, then. Ordered new washers, bleed nipples and brake fluid. Will post back when I go through with this. Hopefully should sort it.

Thanks guys.
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'02 Triumph Speed Four