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Home >> Hyundai >> 2018 >> Kona Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 385 (Brake System) >> Front Brake Caliper >> Repair Procedures >> Disassembly >> Brake Caliper Piston

Brake Caliper Piston

WARNING: This page is about a different car, the 2023 Kia Seltos. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use a new caliper piston boot and seal whenever installing.
  1. Place a piece of cloth (A) between the piston and caliper body.
    G13481698Courtesy of KIA MOTORS AMERICA, INC.
  2. Slowly inject compressed air (A) into the caliper cylinder and push the piston out.
    G13481699Courtesy of KIA MOTORS AMERICA, INC.
    CAUTION: Do not place your fingers in front of the piston when using compressed air.
  3. Remove the caliper piston (A).
    G13481700Courtesy of KIA MOTORS AMERICA, INC.
    NOTE: Be careful not to damage the caliper piston or cylinder.
  4. Remove the caliper piston boot (A).
    G13481701Courtesy of KIA MOTORS AMERICA, INC.
  5. Using a screwdriver or remover, remove the piston seal (A) from the caliper cylinder.
    G13481702Courtesy of KIA MOTORS AMERICA, INC.
    G13481703Courtesy of KIA MOTORS AMERICA, INC.
    NOTE: Be careful not to damage the inner surface or piston seal groove of the cylinder.
  6. Install the piston seal (A) into the cylinder seal groove (B).
    G13481704Courtesy of KIA MOTORS AMERICA, INC.
    NOTE:
    • Use a new caliper piston seal whenever installing.
    • Apply assembly oil to the piston seal.
    • Take care not to get any foreign matter into the cylinder.
  7. Insert the piston boot (A) in the direction of the arrow and position the boot at the end of piston.
    G13481705Courtesy of KIA MOTORS AMERICA, INC.
    NOTE:
    • Use a new caliper piston boot whenever installing.
    • Apply assembly oil to the piston surface.
    • Be careful not to change the direction of the boot.
    • Be careful not to damage the boot.
  8. Install the piston boot (A) into the cylinder boot groove (B).
    G13481706Courtesy of KIA MOTORS AMERICA, INC.
    NOTE: Take care not to get any foreign matter inside cylinder.
  9. Insert the caliper piston into the cylinder.
    G13481707Courtesy of KIA MOTORS AMERICA, INC.
    NOTE:
    • Be careful not to tilt the piston when inserting the piston.
    • Do not apply excessive force when inserting the piston.
    • Insert the piston slowly to prevent damage the inside of the cylinder.
  10. Make sure that the caliper piston boot (A) is correctly installed.
    G13481708Courtesy of KIA MOTORS AMERICA, INC.
  11. Install the brake caliper assembly.
  12. After installation, bleed the brake system.

    (Refer to Brake system - "BRAKE BLEEDING PROCEDURES ")

  13. Check and clean any spilled brake fluid.
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