Changing brake pads - need help!!!?

I have my step father changing my brake pads and he is trying to figure out how to release the %26quot;piston%26quot; that gets tighter when you brake so we can fit the new pads in.



He hasnt done this to a car past the year 1990.... so he doesnt know





its a 2007 poniac g6 v6





thanksChanging brake pads - need help!!!?
If the piston doesn't squeeze back in with a C-clamp, it requires a special tool. Looks like this --%26gt; https://www.alltools.com.au/shop/images/ You can get one at any auto parts store. Autozone has them for about $12. http://www.autozone.com/autozone/catalogChanging brake pads - need help!!!?
Use a C-clamp to loosen the caliper.Changing brake pads - need help!!!?
A large clamp works pretty well - leave the old inner pad in place so it presses evenly and doesn't damage the piston.Changing brake pads - need help!!!?
There is a tool for this.



But I just use a large C clamp.Changing brake pads - need help!!!?
If it is the front brakes, take a block of wood (short 2x4) and lay on on the %26quot;circle%26quot; in the caliper.



take a C-clamp and put one end on the wood and the other end on the back side of the caliper.



turn the handle on the c-clamp until the %26quot;circle%26quot; is flush even with the frame of the caliper ( it should stop moving anyway).



then remove c-clamp and wood and put brake pads in...etc...Changing brake pads - need help!!!?
Rear brakes? (they're kind of tricky)

The caliper cup has to be turned by hand %26quot;and%26quot; pressed in.

The parking brake mechanism is incorporated into it.

Use a putty knife or very large flat tipped screw driver to turn it back in, after he has compressed the caliper cup back into the caliper with a C clamp.Changing brake pads - need help!!!?
Follow closley. After he has removed the caliper from the mounting on one side of the car at a time, and slid it off to the point the pads are removed. Loosen the master cylinder cap but do not take it completly off. Now he can use a %26quot;C%26quot; clamp and one of the old pads to compress, squeeze the caliper piston slowey back into the caliper housing. It does not have to bottom out fully in the housing. When reinstalled and bolted down, slowly depress the brake pedal acouple of times to push the caliper back out. Repeat the other side. When both have been fully replaced and bloted down. Press the pedal several times again. ?Check the fluid level, fill as needed, start the engine and repeat the pumping of the pedal several times. check thefluid again and replace the cap. Important: Drive the car slowly and pump the pedal a few times. Your new pads at first will feel a little spongy but will %26quot;Set-In%26quot; within a few milesChanging brake pads - need help!!!?
Hi M, there is a special tool for compressing the caliper piston, unless there have been changes to the designs typically the pistons are pushed back into the caliper bores, sometime you can leave the assembly on the rotor and use a prybar or screwdriver to drive the piston into it bore using the old pad and housings for leverage. or a large c-clamp can be used to the same effect, however it is important to drive them into their housing carefully and straight or they could become wedged and stuck. some rear brake applications have a screw in piston for the parking brake that has to be properly indexed to replace the pads. good luckChanging brake pads - need help!!!?
Your step father must just open the bleeding screw and use a screw driver or Tommy bar to press the piston back. It's very easy. You must just apply some force.