On 1998 Tuarus' You must roate the plunger with either a needle nose pliers or the specilty tool that Ford makes, i use a channel lock pliers being very careful not taer the boot or go the wrong way and remove the plunger. I belive it is for most of this model run of tuarus' that you do this it is a really bad design.
To replace brake pads and rotor: Unbolt wheel, unbolt caliper, remove caliper, unbolt caliper bracket, remove rotor, replace rotor, bolt up bracket, compress caliper, replace pads, replace caliper, bolt up caliper, bolt up wheel, repeat whole thing on other side...
Probably something close to a 21 millimeter
Proper Torx bit or wrench for caliper C-Clamp to retract piston to get it off the disc
Not sure if it has a formal name, but if you ask at any parts store, Harbor Freight, etc., for the tool for compressing a REAR disc brake caliper, they should know what you need.If they don't, you're in the wrong store.Most of the big chain auto parts stores will even lend the needed tools when selling the associated parts.To elaborate - FRONT caliper pistons can be compressed with just a large C-clamp, or even using a large screwdriver wedged in by the inside pad, and gently pulling it against the pad to compress the piston.REAR pistons - they need to turn like a screw while putting inward pressure on the piston.See "Related Questions" below for more about Taurus / Sable disc brakes.
A C-clamp, open the clamp wide enough to put it over the piston (round metal thing) then close the C-clamp until it is pushed back far enough to allow brake pads to fit properly. Remove the clamp and your golden
Remove the brake caliper, then the caliper frame mounting. ( just two bolts on the inside of knuckle) Now the rotor is free to come off.
Remove brake caliper and caliper frame, then take out rear spindle and remove bearing from it. Refit new one opposite way.
You need a 13mm box wrench.
Remove lug nuts and wheel. Around on the back side of the rotor, remove two caliper pins. Rotate the pad housing out. Pull old pads off. Use one of the old pads to compress the caliper so new brake pads will fit. Slide new brake pads in housing. Rotate back onto rotor. Grease caliper pins. Put the caliper pins back in rubber boot. Attach housing back to rotor. Then put the wheel back on. Check brake fluid and workbrake pedal a few times before putting car in gear.
You need 15 and 18 mm wrench.
You have to remove caliper and rotor, punch out old lug and press in a new one.
You have to remove the entire caliper and brake rotor and punch out the old stud and press in a new one.