I can't get the inside brake pistons on my 06 tundra to collaps is ther any thing special i need to do

For caliper brakes, mainly a large C-clamp or brake cylinder piston tool, to collapes the piston back into the caliper, to install the new pads. If you have rear drum brakes, they make a couple different brake spring tools for removing the springs on the brake shoes.

thasts because they are possibly dragging and to find it you would need to jack vehicle up and turn each wheel in turn ,it could be anything from a piston in a brake caliper to the handbrake shoes which are inside the rear brake disk

Get the manual. Usually ther are 2 bolts holding the rotor in place. Once they have been removed, the rotor should come off pretty easy. I suggested the manual because some brake calipers require a special tool the compress the piston. If done improperly, you could damage the whole thing and have to replace it.

Remove the wheel, remove the 2 bolts holding on the caliper to the caliper carrier. You will need a large C-Clamp or a cailper piston tool. Place an old brake pad against the piston in the caliper and use the C-Clamp to push the brake pad against the piston to collapses the piston into the caliper. Also open the master cylinder cap and place a towel around the area to catch any brake fluid that would come out of the master cylinder as you collapes the piston, this is normal, but doesn't always happen, depending on the level of fluid in the master cylinder. Install the new pads and reinstall the caliper and wheel. Make sure you pump the brake pedal a few times before you take off, to get the pads against the rotor.

You will need a large C-Clamp or a cailper piston tool. Place an old brake pad against the piston in the caliper and use the C-Clamp to push the brake pad against the piston to collapses the piston into the caliper. Also open the master cylinder cap and place a towel around the area to catch any brake fluid that would come out of the master cylinder as you collapes the piston, this normal, but doesn't always happen, depending on the level of fluid in the master cylinder.

The rear calipers on that model rotate in, it requires a special tool.

If you pushed too hard directly in, there is a chance that you may have damaged the caliper.

u need to compress the brake pads with a normal screw or by using a special tool

if there is a cable and spring attached to the caliper then it is the twist back kind. you need a special tool to rotate the piston back and do not force it. it will ruin the caliper. and also some cars one will turn clockwise and one will go counter clock wise i dont think this is the case with your car but if it doesnt want to turn back try changing the direction.

On cars with 4 wheel disc brakes the rear calipers are what they call racheting.The pison needs to be turned clockwise at the same time you are pushing in.This mechanisum is for the E brake system.They make special tools for doing this that you can pick up at your local parts store.

If its the front brakes you are working on and the piston won't retract into the caliper then you need a new caliper, or both actually. Calipers need to be replaced in pairs. If you are working on the rear then you need a special tool to turn the piston back into the caliper. you can get the rear disc brake tool at any auto parts store. Turn the piston clockwise to retract it, and pay attention to the little spots cut out of the piston that the tool grabs to turn it. They need to be at the top and bottom of the piston once you fully retract it or the little pin at the bottom of the inside brake pad wont sit against the piston. And once again if it still wont retract then you need to replace both calipers. Once you are finished you need to pump up the brake pedal and then pull up the parking brake lever and release it 10 to 20 times to adjust the piston.