Defeated by the brakes

[David Lawrence]

Originally Posted by Avulon

Did you fill the new caliper with the pistons fully extended before pushing the pistons back and fitting? IME it's no good fitting a 'dry' caliper to a brake line and trying to bleed the air out, you'll never get all the air out.

Good tip. No i didnt, i fitted the caliper complete with its pads to the hub then did the bleed.

[slovcan]

Originally Posted by David Lawrence

I could have air in my abs module, but my symptom is of air only in the front left brake. I had the hose clamped while i changed the caliper, and bled the new caliper straight away. It is the front left wheel that is weaker braking force, so all adds up to air still in the caliper. Should be a simple job, the fluid flows through easily, pumping the pedal also easily to the floor confirming no obstructions. Just cant get enough through to carry the air out.

Air has a way of moving to the highest point in the system after a while. It may have originated in the caliper hose, but maybe is now in the ABS module (the channel for that caliper).

On some bikes removing the master cylinder from the handlebar and hanging it higher, then tapping the caliper and brake line will help the air move to the highest point.

Just saying maybe the ABS procedure Arctic mentioned is logical.

Cheers,
Glenn

[3disco]

I tried all sorts to bleed the brakes after renewing a brake pipe on my V8 including going onto grass to make the abs to cycle but the only way in the end was a session on the T4,good luck.