Lost back brakes

[Paul Bryant]

This is all very interesting.
I've had exactly the same problem with the front brakes for years, bleed them, they're good for a while then lever back to the bars again, repeat ... repeat etc.
Some one said fit two individual front brake lines, did that, no difference.
Stripped and cleaned the entire system, no difference.
Just last weekend I re kitted the front master cylinder, waiting to see if that makes any difference.

Also have bought a second hand front master cylinder, just to see if swapping that makes any difference.

Am holding Sonny's thought about the bleeder screws ......

 

[Grumpy Ole Codger]

This is all very interesting.
I've had exactly the same problem with the front brakes for years, bleed them, they're good for a while then lever back to the bars again, repeat ... repeat etc.
Some one said fit two individual front brake lines, did that, no difference.
Stripped and cleaned the entire system, no difference.
Just last weekend I re kitted the front master cylinder, waiting to see if that makes any difference.

Also have bought a second hand front master cylinder, just to see if swapping that makes any difference.

Am holding Sonny's thought about the bleeder screws ......

Paul, let me know the results - I have the self same problem! Front brakes go very spongy after 6 weeks or so, bleed..fine! and 6 weeks later..

 

[Paul Bryant]

Paul, let me know the results - I have the self same problem! Front brakes go very spongy after 6 weeks or so, bleed..fine! and 6 weeks later..

Will do Julian.

 

[Fingers]

My brake problem fixed.Bad rear master cylinder got another from Pinwall cheaper and faster than a rebuild kit from Triumph.

 

[1K9]

Has anyone tried to replace the front rotors buttons? A set of new EBC rotors is $200 but, I wonder if I can rebuild the originals for $50.

 

[1olbull]

Might also consider reverse bleeding.
Works well for me and much easier eliminating air in system.

 

[barbagris]

Has anyone tried to replace the front rotors buttons? A set of new EBC rotors is $200 but, I wonder if I can rebuild the originals for $50.

If the buttons are worn - then usually the carrier and maybe the rotor have worn too.

 

[sonny]

The rotors are stamped with Min. thickness allowed.

 

[barbagris]

The rotors are stamped with Min. thickness allowed.

There too. But really I meant that the bits where the bobbins fit will have worn. Esp. alloy carriers.

 

[idk]

This is all very interesting.
I've had exactly the same problem with the front brakes for years, bleed them, they're good for a while then lever back to the bars again, repeat ... repeat etc.
Some one said fit two individual front brake lines, did that, no difference.
Stripped and cleaned the entire system, no difference.
Just last weekend I re kitted the front master cylinder, waiting to see if that makes any difference.

Also have bought a second hand front master cylinder, just to see if swapping that makes any difference.

Am holding Sonny's thought about the bleeder screws ......

Use some tyre levers, or similar, to pry the pads apart, then pump them back again with the brake lever. Repeat on other side. All will be good and hard again.