Front Disc Brake Assembly: Disassembly

WARNING: This page is about a different car, the 2015 Subaru Outback and 2015 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Be careful not to allow foreign matter to enter the brake hose connector.

Remove mud and foreign matter from the caliper body assembly.
Remove the piston - disc brake.
1. Place a wooden block in the caliper body as shown in the figure to prevent the piston - disc brake from jumping out and being damaged.
2. Using an air gun, gradually apply compressed air via the brake hose installation hole to push out the piston - disc brake.
  NOTE: Instead of removing the pistons one by one, remove all pistons at once after adjusting the amount of protrusion evenly using a wooden block.
  
  Fig 1: Applying Compressed Air To Piston Disc Brake Using Air Gun
  Courtesy of SUBARU OF AMERICA, INC.
Remove the piston boot (b) and piston seal (c) from the caliper body cylinder (a).
CAUTION: Do not damage the cylinder and piston seal groove.

Fig 2: Removing Piston Boot And Seal From Caliper Body Cylinder
Courtesy of SUBARU OF AMERICA, INC.
Remove each part from support - front disc brake.

Fig 3: Identifying Front Disc Brake Support Components
Courtesy of SUBARU OF AMERICA, INC.