brake question in regarding brake pad seat

[OlivierA4]

I installed new brake pads and rotors on the front of my car.
I have brake dragging/scraping and I can not figure it out.
this is my third times taking both wheels out and taking every thing apart (rotors, pads, caliper) lube, and cleaned.

here is my observation
1) rusted caliper pistons where the inner pad attached with its 3 prongs spring
2) when the inner pad with the 3 prongs spring attached to the the caliper piston, with 3 prongs spring all seated inside the piston, the inner pad still wiggle around the vertical axis. would this cause the scraping/dragging? or how would the inner pad would seat?
3) do I need to really clean the mounting bracket in yellow arrow? my is rusty. would this contribute to the dragging? http://www.pelicanparts.com/techarti...mall/pic10.jpg

[Let it snow]

It is very important to clean the pad contact points.

http://www.wagnerbrake.com/technical...-calipers.html

[diagnosticator]

Caliper piston seal rings twist a little bit in the grove with the brakes applied. When the brakes are released, the twist in the seal ring returns to normal and pulls the caliper piston and brake pad away from the rotor just enough so that the pads do not rub on the rotor. If the piston is not retracting properly, then the caliper is not working right and need to be replaced. Another factor involved here is if the piston is sticking in the caliper bore. That will also cause the piston and pads to not retract from the rotor properly. Caliper piston sticking is caused by not changing the brake fluid often enough and the water accumulation in the calipers causes corrosion in the caliper bore and piston.

[OlivierA4]

Thank you both of your replies. this will line up with what I plan to do this weekend.
first will be take everything apart again, and clean both pistons and calipers
second I will recheck the operation of the piston such as movement when brake pedal applied.

I will report back. thank you again

[diagnosticator]

Thank you both of your replies. this will line up with what I plan to do this weekend.
first will be take everything apart again, and clean both pistons and calipers
second I will recheck the operation of the piston such as movement when brake pedal applied.

I will report back. thank you again

You can't fix any corrosion in the caliper causing the piston to stick. The caliper piston can't be reassembled using the old piston seal and dust boot. The caliper needs to be replaced with a remanufactured caliper.

[hightime80]

I tried to tell him he had a hung caliper on his other thread. I guess he thought he could rebuilt it himsrlf lol.
Go get an reman caliper already. If you are running stock ones autozone even have them.

[OlivierA4]

I did not rebuilt the caliper if it rusted. anyway, this is what I got so far, I remove both side and cleaned, rubbed, sanded down anything that isn't smooth from carrier to outside piston.
Lubricate anything up, put everything back and the take it out for a ride/check and F' ME. the damn thing still scraping at 15 miles and up. 3 weeks ago before I changed the brake pads and rotors, nothing was scrapping. this happen right after I change.
I don't know if the caliper seize.

I have a question to verifying if I do this right. After the brake pedal pressed and the brake pads engaged/grab the rotor then the brake pedal release, Would both inner and outer brake pads moving away from the rotor? it quite silly to ask this but I would like to verifying my thought.
it does not make sense to me that it was not scrapping before the change and now it does and the primarily suspect would be the caliper rusted. I am not second guess on you guys but the issues just pondering me so bad.

I am going to guy the re manufacturing caliper soon

Crucial thing i left out. I installed the tyrosport guide pins onto the front calipers. would this cause any problems?

[OlivierA4]

Update report.
I jacked the car up both front and rear with floor jacks, put the car in D and slightly bring the car to 20MPH. hop out of the car and quickly run to each wheel to hear the sound. It turned out that the rear wheels are making the damn noise. I remove the back wheel and replace brake pads and rotors on both sides.
LESSON LEARN: LISTEN to my wife who did the drive test the other day. she informed me that the sound coming from the back side. I disbelieved her and paid the price and time

Bright side: I did clean, rub, dusted/lub all front brake parts 3x, and 1x in the back :)
Thank you very one that chimes in to help me and I gracefully appreciated.
Olivier