Front Disc Brake Assembly: Assembly

Clean the inside of the caliper body using brake fluid.
Apply a coat of brake fluid to piston seal and install the piston seal to the caliper body groove.
Apply a coat of brake fluid to the inner surface of cylinder and the entire outer surface of the piston.
Apply grease contained in the piston seal kit to the boot, and install it to the groove at the ends of the cylinder.
Insert the piston into cylinder.
CAUTION: Do not force the piston into cylinder.

Fig 1: Inserting Piston Into Cylinder
Courtesy of SUBARU OF AMERICA, INC.
Position the boot in the grooves on cylinder and piston.

Fig 2: Identifying Boot Position In Grooves On Cylinder And Piston
Courtesy of SUBARU OF AMERICA, INC.
Apply grease contained in the piston seal kit to the lock pin and guide pin outer surface, cylinder inner surface, and boot grooves.
Insert the lock pin and guide pin boot into the support.

Fig 3: Identifying Pin Boot And Lock Pin Or Guide Pin
Courtesy of SUBARU OF AMERICA, INC.