Knock out 2 pins, disconnect 2 sensor wires, push the pistons back into their bores, pull the old pads, and you're ready to put the wheel back on. If the rotors are in good shape, it's a 5 minute job per side once the wheel's off.
"If everything seems under control, you're simply not going fast enough" --Mario Andretti
1995 E500 street car
1986 Porsche 944 Turbo S track car