Changing rear brake pads on 2008 Ford Taurus and a threaded rod located within the caliber piston prevents compression of piston back into the caliber.

Open bleeder valve & push piston in by hand

If you have an internal parking brake, that has
to be screwed in also

you'll need to compress the caliper using a c-clamp to push the pad back

You will have to use a c-clamp or brake piston compressing tool to get that piston back in, while you have the brake master cylinder fluid reservoir cap off.

Hi, if you are replacing the rear pads, you will need a special caliper tool(can be purchased or rented from Autozone or Discount Auto Parts) to reseat the piston as it has to be turned or rotated inward to reseat..



To move the piston back into the caliper, the LH piston is turned clockwise and the RH piston is turned counterclockwise. NOTE: A moderate to heavy force toward the caliper piston must be applied. If sufficient force is not applied, the internal park brake mechanism clutch cone will not engage and the piston will not compress. Using the special tool (or equivalent such as OTC tool 7317A), compress the brake caliper piston into its cylinder.



In an emergency, you can use needle nose pliers, but be careful not to pinch the rubber boot or seal as this will create a leak of brake fluid....

ok try this first get a c-clamp and a piece of wood and compress the piston that way.you could try to open the bleeder screw put if does not compress you need a specail tool .if that tool still does not compress the piston then you need to replace the caliper if that won't work then you need to get a specail caliper tool you should be able to get that at autozone or advaced auto parts they will charge a deposit but you will get that back when you return it .

Jack up car, remove the wheels, take out the two retaing bolts on the brake caliber, slide caliber up off brake disc, remove old brake pad, use a C-Clamp or big pair of Channel locks to compress the piston in to the brake caliber, Insert new brake pads onto caliber, slide brake caliber back over brake disc, reinstall the 2 retaining bolts. put tire back on. Repeat this till you have replaced all pads that you are going to change. ***Caution.. Before putting the car in gear, crank it up and pump the brake pedal till you have a firm brake pedal. If you fell to do this you will have no brakes due to the pistons on the calibers are compressed and are not seated on the discs.

Rent a tool from auto zone to help you compress the rear brake piston. It cannot be compressed with c clamp because the piston must be turned while it is compressed.
Autozone will charge you approx. $60 for the rental and then you get all your money back when you bring the tool back.
You need to compress the rear piston so you have room for the new, thicker pads.
The rest of the job is just like any other brake job. 1. remove one pin bolt and rotate caliper open to get to the pads. 2. compress the piston in with the tool 3. replace the pads. 4. assemble.

The rear calipers on these models require a special tool that compresses and turns the piston in at the same time -- most parts stores carry this tool.

It is called a caliper piston press -- and it installs where the pads would go and acts like a c-clamp,when turning handle it will turn the caliper piston backinto the caliper as it compresses it.
Anytime the brake rotor or brake pads are being replaced, the rear caliper piston must be seated (bottomed) to compensate for the new brake rotor or lining. Because the Parking Brake self-adjuster mechanism is attached to the piston, a special seating method is required. The only acceptable method is by rotating the piston back into the bore using Retractor,MILLER Special Tool 8807, . Any other seating method will damage the self-adjuster mechanism.
Good luck and hope this helps.

You can sometime just pull it off but sometimes you will need to take a screwdriver and push the brake pad back on the caliber piston side. This will force the piston back and allow you to remove the caliber. After you remove it you will need to compress the caliber piston fully back in order to allow room the install the new pads and get them back on the rotor. Sometimes you can fully compress it while the caliber is still installed. On some vehicles like Honda you need a special tool in order to compress the caliber. Most auto parts stores will lend you the tool if you buy the pads from them. Be sure and loosen the master cylinder fill cap to allow the brake fluid to expand in the master cylinder. Clean everything off with spray brake cleaner before installing the new pads and clean the new pads throughly. Be sure and install pads in pairs. Do both front wheels or both back wheels not just one.

they should screw in not compress