Ducati Sporting Club UK > Model Specific - Discussion, Technical Problems and Help > 998 / 996 / 916 / 748 > HELP!!! - Bleeding my rear brake

[L3OONY]

Am in a bit of a pickle...

Have just replaced my rear caliper and have had a bit of difficulty bleeding it.

I have bought a brand new Brembo caliper so I am sure it's OK however only one of the pistons comes out when I bleed it off the disc (as per Ducati workshop manual).

Having put it on the disc it does appear to work (in the garage with me rotating the disc by hand...) but the pedal is rock-hard.

Does this mean I have too much fluid in the reservoir and also, is there an airlock in the caliper that is stopping the other piston from coming out?

The one that isn't moving is the one on the bleed nipple side if that means anything to anyone.

Also, I think that when I replaced my rear brake pedal with one of Casoli's finest polished ones, I didn't locate the post (on the inside of the pedal at the pivot point) behind the spring which would appear to pull the plunger fully out of the master cylinder.

Am I correct in thinking that this is how it should go back together?

Heeeeeeeeeeeeeeeeeeeelp..........




[Edited on 2-4-2005 by L3OONY]

[Guido]

L3OONY,

Not sure of all the answers to your Q's but as far as the piston sticking and the actual bleeding process goes, try these

1) - With the caliper removed from the disk, place a zip tie around the caliper so that it passes bewtween the two piston on the inside. You want to position it so that it prevents the free moving piston from actually moving. Once in place you can slowly actuate the rear brake which should ease the non-moving piston out. Smear the piston walls with some copper grease, press it back in and repeat the process several times. Should free up the bugger once and for all.

2) When bleeding the rear brake it has been suggested B4 to do this with the caliper removed from the disk and with the bleed nipple pointing upwards - i.e. at it's highest point to aid the removal of air from the system.

Hope this gets you going mate

Guy

[L3OONY]

Superstar, cheers

Am off to try it right now!


.

[L3OONY]

Superb

Did just what you said and it worked perfectly!

Very grateful for all your help, thanks Guy

[Guido]

No worries mate.

Glad to be of service. Enjoy that new found stopping ability of the rear brake

Guy

[adam]

I thought you couldnt use copper for the caliper pistons, as it is abrasive?