LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2021 >> WRX Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (Brake System) >> Front Disc Brake Assembly >> Disassembly
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Front Disc Brake Assembly: Disassembly

WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:

Be careful not to allow any foreign materials to enter through the brake hose front mounting hole on the caliper body. 

NOTE:

Remove mud and foreign matter from the caliper body. 

  1. Remove the bleeder cap (a) and the bleeder screw (b) from the caliper body.
    G14602175Courtesy of SUBARU OF AMERICA, INC.
  2. Remove the piston disc brake from the caliper body.
    1. Place a wooden block, etc. in the caliper body 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 front 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. 

    G14602176Courtesy of SUBARU OF AMERICA, INC.
  3. Remove the boot piston (a) and piston seal (b) from the caliper body.
    CAUTION:

    Do not damage the cylinder and piston seal groove. 

    G14602177Courtesy of SUBARU OF AMERICA, INC.
  4. Remove the slide pin (a), slide pin lock (b), and pin boot (c) from the support front disc brake.
    G14602178Courtesy of SUBARU OF AMERICA, INC.
  5. Remove the slide pin bushing from the slide pin lock.
    G14602179Courtesy of SUBARU OF AMERICA, INC.