I am replacing the pads, and with the new pads the piston is to far out, and I need to push it back in. Is there a way to push the piston back without pushing the fluid back into the system? the car has ABS and I don't want the old fluid to move through the system.

Thanks in advance.

Ed

 

Hey there-

If you do not want to use the old fluid just bleed the brakes. It might be best to get the new pads on first so compress the piston first and yes the fluid will back up into the system. Once you have room for the new pads and have the calipers re-installed then bleed the system and install new fluid.
You might be able to open the bleeder and the compress the piston to hopefully express the old fluid out the bleeder, but I'd bet some of it will still back up into the system.

Good luck
K

 

I was going to disconnect the hydrolic line, and push the piston back and let the fluid go that way and then hook the line up then re-align the caliper and bleed as normal so that nothing goes back into the system.

 

What car is this? Thirdgens don't have ABS.

 

This is what I usually do on brakes. Take out about 1/2 the fluid with a turkey basture. Remove the caliper, put the old pad back in it's place over the piston. Then use a C-Clamp again the pad and the back of the caliper to seat it. Then, I put the new pads on and reinstall re-install the caliper. Technically in most cases I know you could just refill the brake master cylinder, depress the brakes a bit then top it off again, because if you didn't open the bleeder (which you had no need to) or let the master cylinder go empty there is "Technically" no need to bleed the brakes because you let in no air. While I'm in that spot though I always bleed the brakes just because it's easy and good for the car. Should apply to an ABS disc brake car though, (I think) usually the only difference is a bunch of electronic junk.



BTW, already mentioned but it seems like you are talking about a different car, thirdgens don't have ABS. No matter who told you.

 

lol, ya its a grand prix, friend pulled up with a squeeling rotor, and I know how to replace them without ABS and one of my friends shot his ABS because he pushed the piston and shot the crappy fluid through the ABS actuator (spelling?) and now has permanently damaged his ABS system.

- Firl