it is easy first you need to get the too for rear brakes, i forgot what it is called, but it is a cube, and it attaches to a quarter inch socket. first you have to disconnect the the e brake, you can do it with a socket wrench, i for got what size what socket, depended on which side you are working on the the direction of turning the socket changes, one you releave tension, on the e brake you can disconnect it easliey, you can do it with out a socket rench, but it will be hard. then you take off the two bolts that hold the caliper in place on the bracket, once you got the bolts off use a flathed screwdriver, or prybar to remove the caliper. once you got the caliper off remove pads, and get the tool, just go to advanced auto, and say you need the tool for rear brake on a forigen car. attach the tool to the socket wrench and place on the caliper, the cube has four different attachments for the calliper so use the side that corrensponds with the calliper. so with the cube attached to the socket wrench put it on the calliper and and turn clockwise till the calliper is all the way in, it might take some force to turn it back it depending on the last time the pad were changed. just be pacient and use a lot of force, it is cheaper to do it your self then to pay someone to change it for you
Brake piston? Front use a "C" clamp to compress Rear - Piston is threaded turn clockwise to compress (water pump pliers?)
You will need a caliper rewinding tool
It requires a special tool to turn and compress the piston in at the same time.
the piston on the rear calipers will turn in a clockwise motion and that is how they retract.
Rewind it with a piston rewind tool or, at a pinch, use needle nose pliers.
If they are the same as a 97 Maxima then you twist them, don't compress them. To compress the piston you do it with a 'Disk Brake Piston Tool'. You can get this at Pep Boys for $12. To compress the piston on the passenger side you turn the piston clockwise. To compress the piston on the driver side you turn the piston counter-clockwise. Be careful trying to turn the piston using pliers or some other tool as you may tear the rubber seal around the piston.
Shade tree mechanics use a C-clamp and a flat steel bar to compress the piston. I have also used a large adjustable Channel-Lok-type pliers to compress.
need a special tool to turn them back in the dont press in
You need to rotate the piston counter clockwise.
Use a C clamp to push the piston out of the way to remove and also to place back on rotor.
If it is the front brake use a "C" clamp to retract piston If it is the rear and the parking brake is used by this caliper piston is threaded and a special tool (not expensive) available at Sears or auto parts to "screw" piston into caliper body
You will need to wind the pistons in the calipers back in..there are wind back kits available online..note that the pistons wind back in different roations according to which wheel you are doing..passenger side rear winds in anti clockwise rotation while the drivers side rear winds in on a clockwaise rotation..