Brake System

Master Cylinder

10steps
~60min
3/5difficulty
0102030405022.617N·mlb·ft
Tightening torque found on this page
Done 0 of 10

Components and Component Location

Components

1. Reservoir Cap
2. Reservoir

3. Master Cylinder
4. Brake Fluid Level Sensor

Repair Procedures

Removal

  1. Turn the ignition switch OFF and disconnect the negative (-) battery cable.

  2. Remove the air cleaner assembly.

    G 2.0 NU MPI (Refer to Engine Mechanical System — "Air Cleaner")

    G 2.5 GDI THETA II (Refer to Engine Mechanical System — "Air Cleaner")

  3. Disconnect the brake fluid level sensor connector (A).

  4. Remove the brake fluid from the master cylinder reservoir using a syringe.

  5. Disconnect the brake tube (A) from the master cylinder by loosening the tube flare nut.

    Tightening torque: 18.6 – 23 N·m

  6. Remove the master cylinder (A) after loosening the master cylinder nuts.

    Tightening Torque: 9.8–15.7 N·m

  7. Separate the reservoir from the master cylinder after removing the screw (A).

    Tightening torque: 0.98–1.5 N·m

Installation

  1. Install in the reverse order of removal.

  2. After installation, bleed the brake system.

    (Refer to Brake System - "Brake Bleeding Procedures")

  3. Check for brake fluid leakage and pedal condition.

Test yourself

A quick Kia Optima DL3 quiz: every answer comes with an explanation and a link to the manual page.