Some of thoes pstons have 2 b turned clockwise (AS) U are pushing them in & also they sell a tool that's let u do the same thing
You need to turn (screw, rotate) the piston clockwise in the caliper a large number of times to make it fully retract. You can insert some kind of tool into the indentations in the face of the piston, or grip the very top edge of the piston with pliers in order to turn it. It has to be fully retracted to allow enough space for "new" pads to be installed.
Caliper pistons should retract if calipers are in working order. Calipers need to be removed and rebuilt or replaced. A brake fluid flush is highly recommended.
After changing pads? - pump brake pedal to set pads against rotor To retract to change pads? If parking brake is not connected to this caliper - compress piston into caliper body with a "C" clamp - if parking brake is installed on this unit a special tool (not expensive) is required because piston is threaded Tool is available at Sears or auto parts ========================= If you're talking about the rear disk pads, they are adjusted using a small screw (hidden behind a nother screw) on the caliper which adjusts the parking brake. You need to turn this screw to back off the calipers in order to install the new pads. Since the calipers are threaded, no amount of pushing will retract them.
The rear brakes you need a 3/8 standard wrench to open two bolts retaining the caliper. The piston caliper requires a special tool to "wind " it or screw it back in order to install the new brake pads. DO NOT PRESS THE CALIPER PISTON BACK. You have to "screw" or rotate it. The rear brakes you need a 3/8 standard wrench to open two bolts retaining the caliper. The piston caliper requires a special tool to "wind " it or screw it back in order to install the new brake pads. DO NOT PRESS THE CALIPER PISTON BACK. You have to "screw" or rotate it.
did you try to loosen the bleeder screw before using the c clamps You have to turn the piston clockwise in order for it to go back into the caliper.
Jack up the car, remove the rear wheel, find the caliper and behind it there are two large 19mm bolts (on a 2002) and loosen them both, pull the caliper off and be careful not to hyper extend the brake line hose, pop out the old pads...they are two different pads in a set, identify inside and outside, insert the pads, use a 'c' clamp to spread open the pads and replace the caliper unit, bolt on your wheel and take it easy braking for a few miles in order to seat the pads well. CHECK YOUR MODEL YEAR! DON'T COMPRESS WIHT CLAMP JUST YET! In my experience with the 97 Altima, the rear brake piston CANNOT be compressed in with a C-Clamp! If the piston face looks like a 4 leaf clover, it must be TURNED back in, not compressed! Use a pair of needle nose pliers and insert into the grooves in the face of the piston. Turn clockwise to get the piston back into the caliper. Using a clamp could damage the caliper.
You need a special tool to compress the piston back into the caliper. IF you have this simply unbolt the caliper, slide it off the brake disc, the pads slide out and the replacements slide in the same as the old ones came out, they'll only go in one way. However in order to refit you need the tool to compress the piston back into its start position. The piston 'screws' back into the caliper under pressure, the tool is essentially a threaded bar with a peg on end that locates in the groove/holes in the piston and a T on the other which goes against the caliper, you then wind the bar round and the pressure and screwing action winds the piston back in. The N/S piston has a reverse thread so needs to be wound the opposite way. With all the bits ready to go it can be done in an hour even without having done it before.
Remove wheel, remove caliper from mount, not from the brake line or the cable, get proper tool for working on rear disk brakes then twist the piston and compress it back into the caliper, install in reverse order.
remove wheel , remove brake calaper, take off pads, push caliper piston back with a C clamp , reistall in reverse order.
Remove the two bolts holding the caliper over the rotor, remove caliper. You may have to gently persuade it with a dead blow or hammer. Once removed the pads come off by pushing them out. Use a clamp to press the caliper piston back into the caliper or you won't be able to put the caliper back over the rotor with the new pads installed. Now simply work in reverse order installing the pads and caliper, bleed your brakes, and hit the road.
remove master cylinder cap, raise vehicle and take off tire, remove caliper mounting bolts, detach the caliper and be very carefull of brake hose.hang up caliper with something to prevent breaking hose. use a screwdriver to pull up the retaining spring on the outside pad while sliding it out of the caliper. unclip the inner pad from the piston, before putting on new pads, compress piston back in bore with a big c-clamp! place old pad on piston to compress. installation is in reverse order! when done do not forget to put master cap back on.
number 1 jack up rear of car and put safety stands under. their are 2 bolts that hold the caliper on. take 2 bolts out and you can lift the caliper off the rotor. discard old brake pads and you have to push the piston back in the caliper. you will need to open the bleeder screw on the caliper. in order to push the piston back you will need vise grip pliers. after you push the piston back close bleeder screw. install new brake pads and put caliper back on with the 2 screws or bolts. after you install the pads and caliper check the brake fluid resivor and fill to full line. pump brake pedal several times. if you have a hard and high pedal your done. if the pedal is low you have to bleed the rear calipers starting with the right rear first then the left rear. you can bleed them by opening the bleeder screw on the right rear and pump the brake pedal slowly 3 or 4 times. then tighten the bleeder screw. pump the pedal again 3 or 4 times and check the fluid. then do the same to the left rear caliper in the same order.