An example of an incorrect procedure for replacing brake pads in a disc brake system is?

Removing the piston from the caliper is not part of the standard procedure for replacing brake pads. In fact, the caliper piston is designed to remain in place during a brake pad replacement. The piston can typically be compressed back into the caliper to make room for the new pads, but taking it out entirely can lead to complications, such as damaging seals or causing a loss of brake fluid. This process is unnecessary and can create additional work, such as needing to bleed the brake system after reassembly.

In contrast, compressing the piston is a necessary step to fit new pads, inspecting the rotor for damage is crucial to ensure the complete braking system is functioning correctly, and applying brake grease to the backing of the pads helps to eliminate noise and ensure smooth operation of the brake system.