Go them on my 2008 commencal combi

The back brake isn't 'biting' properly - I have to pull the lever in almost all of the way to get any response.... the front is fine.

Any suggestions (aside from going to the LBS)?

cheers guys and gals

Soounds like you need to bleed 'em to me.
To bleed 'em you really need the Avid bleed kit but you may possibly be able to bleed with one hose and a syringe & oil of course by injecting oil into the caliper bleed nipple with the lever cap removed or the bled screw removed... or get down the Loc... sory can't suggest that.


Or do 3s have an adjuster on the lever?

Rod

You might as well be speaking French, dude...
I've no clue with hydraulics... is it an easy procedure to bleed them? I've found a few guides showing how to do it, but is it fiddly?

cheers

Also, I remember reading something about locking the brake lever in place over night to force bubbles out of the system?

anth your best buying a bleed kit and following the instructions with them step by step exactly how it says......then you can't really go wrong

I also have Avid Juicy 3s and have never bled brakes. I too am thinking of getting a bleed kit and doing it myself.

The kit looks expensive:
http://www.wiggle.co.uk/avid-juicy-bleed-kit/

This is much cheaper. Does it contain everything you need? It says that it is compatible with Avid brakes, I assume that since Juicy 3s are Avid it will work:
http://www.reddogracing.co.uk/itemdetails.php?partno=32

cheers
Alex

cheap one looks good to do the job.
the only thing ive found in the avid bleed kit that you cant get from your average tool kit are the syringes with the brass connectors on to the calipers.all other things you can source or already have.

Thanks, I'll give that a go.

How important is it to have the spacers guys?

the ones you put inside the callipers to help keep them spaced

can you buy them separately?

cheers

IF you mean the springs...? Pretty important. They are what give a little added pressure to assist in pushing the pads away from the disc face and stop them rattling like a Rattlesnake on speed! When buying new pads most (if not all come with new return springs.)

If when changing the pads you push the pistons back in to their bores be sure to onnly push on the centre locating pin as the pistons will break if you push on their edges. (I use a small 'G' Clamp)

Rod

i thought anth meant the spacers used for stopping the pistons from being adjusted too close together while the pads are removed.you could bleed the brakes with the pads still in place but run the risk of contaminating them with oil.the springs are for retaining the pads against the piston, they dont actually push the pistons back, thats done by the vaccuum created when the brakes are applied

Yeh, I meant the spacer pads for keeping them apart when you bleed the brakes... ive had a google and cant find them, but can you buy them separately?

i'd guess not,but you could try your LBS to see if they have any to give you.or just use something else to wedge in while you do the job.its only to stop the pistons from potentially closing too far that you cant even get a scew driver in to ease them apart.

Thanks glynn six 0. Kit came and I have now bled my brakes. It wasn't difficult and watching all the bubbles coming out of the caliper was strangely satisfying. For anyone else wanting to do this I found these sites very useful:

http://www.sram.com/sites/default/files/te...tment_rev_a.pdf
http://www.youtube.com/watch?v=GzZkEIrCBJ0

good find that one

Re: spacers... Oh
As quite correctly pointed out it's the vacuum created within the master piston by the return spring acting on the master cyclinder piston that creates the vast majority (if not quite all?) of return pressure through a potential pressure drop creating a negative pressure (vacuum) on the slave pistons found within the brake caliper body. (but I thought I'd keep it simple) I guess I should of highlighted the rattley pads bit to cover my backside (said he, beating a hastey retreat for puting in a lazy, half arsed answer in for a question and hoping noone would notice... lesson learnt )

R d

I SHOULD THINK SO TOO!!!!!!!!!!!!!!!!!!!

Think I'll buy that kit since it worked so well for you...

cheers dude

Thanks for all the replies guys