Caliper installation note

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Clean the exposed area of the piston.
Push the piston in using the commercially available disc brake expand tool.
CAUTION:
- If the piston is pushed into the caliper while rotating the piston, the caliper internal parts could be damaged. Be careful not to rotate the piston when pushing the piston into the caliper.
Fig 1: Pushing Piston Using Disc Brake Expand Tool
Courtesy of MAZDA MOTORS CORP.
Install the caliper.