Should I remove brake fluid before remove the brake caliper to allow for expansion or not?

Question

Should I remove brake fluid before remove the brake caliper to allow for expansion or not?

Answer 1

Just use a C clamp to push the caliper piston back in. If your brake fluid reservoir is near full, expect fluid to over flow out the top when you do this

Answer 2

yes unless your car looks like mine Then who cares

Answer 3

I never do, because if you do then will have bleed the line's,If you just take a c-clamp and one of the old brake pads and ease it together until the piston is all the way in ' 'then put your new pads on and back together.Then just mash the brake pedal a time or two you'll be ready to go.Be sure to ease the c-clamp in slowly so you don't over flow the master cylinder.

Answer 4

Why bother, just plug the line. You're going to have to bleed the new caliper anyway so if you want to flush the system keep bleeding it out until the fluid is clean.

If you're changing the pads yes you going to have to remove some fluid to account for the fact the new ones are going to be thicker. For that just use a turkey baster, you don't need to remove very much about 3/8 of an inch.

Answer 5

remove the old caliper hang it by a wire put the new caliper on then take off the line leaving the washers in place put the line on the new caliper tighten then bleed the brakes

Answer 6

Keep in mind that is is possible to damage an ABS by pushing fluid backwards through it. And they're not cheap. If you have ABS push it out the bleeder valve and replace with new fluid at the master.

Answer 7

No - because there is no expansion - take the cap off the brake fluid reservoir and let the air push back through and then put the pads on (after you compress the calipers) - put more brake fluid back in the reservoir and then pump the brakes (after the new pads are on) - they will refill themselves - good luck!  (However, if your rotors are damaged - putting new pads on won't make any difference).

Answer 8

i always remove a small amount of it just in case it decides to run over,usually it wont,but i do it as a safety measure just in case, brake fluid will eat the paint of of anything it touches,good luck.

Answer 9

Hi, tes u should bcoz if u dint it would create any other problem so coleect the fluid in another container and carry on u r biusness

Good luck

Answer 10

no need to do it

Answer 11

It would`t hurt, but is unnecessary unless the reservoir is already filled to the brim. If the brake fluid overflows make sure you flush it off right away because it will eat up your paint and concrete floors.

Answer 12

no reason to remove brake fluid. but, if your vehicle has anti lock brakes and you are going to compress your piston back into the caliper. crack your bleeder valve on the caliper. that way you don't force dirty brake fluid back into the anti lock braking system and cause damage. instead the dirty fluid will go out the the bleeder valve and not back into system and just refill resevior on master cylinder, to make up for the loss of fluid.

mmfh ~;)

Answer 13

Make sure the cars jacked up safely first.  Its not neccessary to remove the brake fluid.  I guess your wanting to replace the brake pads right!.  Just insert a fairly wide s***w driver between the calipers and wedge the piston back try not to put to much force behind it, which will eventually release the brake pads.  Then insert the new set.  Disc brakes are self setting and dont need bleeding as long as theres no leaks!!.  

Answer 14

Nobody else does.  It can be a little embarrassing if you run the reservior over.

Answer 15

YES YOU CAN OR OPEN BLEEDER AND ATTACH A SMALL RUBBER HOSE TO IT AND DRAIN BRAKE FLUID INTO A SAFE CONTAINER.

Answer 16

Brake fluid will eat up the paint and make a mess running down your fire wall so instead of trying to push the fluid backwards in the system put a small hose on the bleeder valve and open it up when you retract the pistons.  

Answer 17

Suck about 1/2 out of the reservoir, and then place a rag around the area to catch excess fluid, that this fluid can squirt when the Caliper in placed back fully.

Normally when people have to add fluid to the brake system there is a reason, a leak, or brake components are wearing, this fluid takes the place of the space which is worn away.

Place new fluid into the reservior after the repair is completed. Using the correct brake fluid for the vehicle you are working on.