hi i just did a full caliper,rotor, and pad replacement on my front right wheel

how do i expand my caliper pistons now that im done, to basically make my brakes work

I asked in the previous post the wrong question

i obviously disconnected the brake line

Is the only way to make them expand is to bleed all brake lines then my brakes should work?

Also the car doesnt have to be on during bleeding

thanks
Matt

 

*delete*

 

if im understanding your question correctly, PUSH THE BRAKE PEDAL!. if that doesnt make sense to any one then im way confused!

 

I am assuming that you want to get the pistons in the calipers to "come out" as in "press against the rotor", in that case: Yes, just pump the brakes, it will eventually work, if you had the lines disconnected and everything, then you've got tons of air in it, and it will take a long time to get it all out, make sure you keep enough fluid in it

Yes, you can do all this without the truck running, but it will be faster with the vacuum assist for the brakes,

 

Sometimes if you just open the bleeder and remove the lid on the master cylinder they will gravity bleed even. This usually will take a little while but you can do it without help. Just keep an eye on the brake fluid level and don't let it run dry, when you are getting straight brake fluid out of the bleeder tighten it up then pump the pedal and the caliper will expand against the pads and rotor.

 

If you replaced calipers you will need to bleed the brakes. Look up "bleeding brakes" Im in a hurry or else I'd type it all up for you. Get a friend to help if you can, it helps a lot.

 

do what zookdogg suggested, this will get out most of the air. then once that is done you should be able to pump up the brakes. And you may still have to bleed then by pumping to get that last bit of air out.

And another tip:

when pumping up the brakes with an old master cylinder. Use short strokes because the master cylinder builds up crud on the cylinder wall where the piston usually does not go. Then when you pump a full stroke you can damage the seals.

Remember..... Old cylinder=short strokes