Front Brake: Disassembly

WARNING: This page is about a different car, the 2014 Subaru BRZ. However, it is still accessible from the selected car via links, so may be relevant.

Removal of cylinder boot
1. Remove 2 cylinder boots.
  CAUTION: To prevent the front disc brake piston from being scratched, always remove the boot with hands without using a tool like a screwdriver.
  
  Fig 1: Removing Cylinder Boots From Front Disc Brake Piston
  Courtesy of SUBARU OF AMERICA, INC.
Removal of front disc brake piston
1. Put a wooden block between the pistons of the cylinder ASSY to prevent the pistons from popping out.
  
  Fig 2: Removing Front Disc Brake Pistons From Cylinder Using Air Gun
  Courtesy of SUBARU OF AMERICA, INC.
2. Using an air gun, gradually blow air into the applicable part to remove the 2 front disc brake pistons from the cylinder.
  WARNING: Be careful not to pinch your fingers.
  
  CAUTION: Be careful not to spill brake fluid.
  
  NOTE: Replace the front disc brake cylinder ASSY, if the front disc brake piston is damaged.
3. Remove the wooden block.
Removal of piston seal
1. Using a thin flat tip screwdriver, remove 2 piston seals from the cylinder ASSY.
  NOTE: Wrap the tip of the thin flat tip screwdriver with a protective tape.
  
  CAUTION: Do not damage inside the cylinder and the seal groove.
  
  Fig 3: Removing Piston Seals From Cylinder Assembly Using Flat Tip Screwdriver
  Courtesy of SUBARU OF AMERICA, INC.
Removal of front disc brake bleeder plug cap
1. Remove the front disc brake bleeder plug cap from the front disc brake bleeder plug.
Removal of front disc brake bleeder plug
1. Remove the front disc brake bleeder plug.