Kia Cee'd Quiz
Brake System

Brake Booster Repair Procedures

In this manual: Brake System
General Information — 15Maintenance — 7Engine Mechanical System — 84Engine Electrical System — 49Emission Control System — 22Fuel System — 95Clutch System — 28Manual Transmission — 21Dual Clutch Transmission (DCT) System — 47Drive Shaft and Axle — 20Suspension System — 36Steering — 23Restraints — 39Brake System — 54Body (Interior and Exterior) — 209Body Electrical System — 254Heating, Ventilation, and Air Conditioning — 56
27steps
~162min
5/5difficulty
0102030405025.519N·mlb·ft
Tightening torque found on this page
Done 0 of 27

Brake Booster Operation Test

Perform the following tests to simply check the operation of the brake booster.
  1. Start the engine for one or two minutes, then stop it. If the pedal fully depresses the first time but gradually rises on subsequent depressions, the booster is operating correctly. If the pedal height remains unchanged, the booster is not operating.
  2. With the engine stopped, depress the brake pedal several times. Then depress the brake pedal and start the engine. If the pedal moves slightly down, the booster is in good condition. If there is no change, the booster is not operating.
  3. With the engine running, depress the brake pedal, then stop the engine. Keep the pedal depressed for 30 seconds. If the pedal height does not change, the booster is in good condition. If the pedal rises, the booster is malfunctioning. If the above three tests are normal, check the booster performance. If any one of the above three tests is not normal, inspect the check valve, vacuum hose, and booster for malfunction.

Removal [LH]

  1. Turn the ignition switch OFF and disconnect the negative (-) battery cable.
  2. Remove the battery. (Refer to Engine Electrical System - "Battery")
  3. Remove the ECM. (Refer to Engine Control/Fuel System - "Engine Control Module")
  4. Remove the master cylinder. (Refer to Master Cylinder)
  5. Disconnect the vacuum hose (A) from the brake booster. [Kappa 1.0 T-GDI]
    [Kappa 1.4 MPI]
    [Gamma 1.6 MPI/T-GDI]
    [Gamma 1.6 GDI]
    [Gamma 1.6 T-GDI]
    [U-II 1.4/1.6 CRDi]
  6. Remove the lock pin (A) and the flat head pin (B).
  7. Remove the mounting nuts (A).

    Tightening torque: 16.7 ~ 26 N·m

  8. Remove the brake booster (A).

Removal [RHD]

  1. Turn the ignition switch OFF and disconnect the negative (-) battery cable.
  2. Disconnect the vacuum hose (A) from the brake booster.
  3. Remove the master cylinder. (Refer to Master Cylinder)
  4. Remove the lock pin (A) and the flat head pin (B).
  5. Remove the mounting nuts (A).

    Tightening torque: 16.7 ~ 25 N·m

  6. Remove the connector bracket (A).
  7. Remove the clutch master cylinder assembly (A). [MT only]
  8. Place a jack under the edge of the oil pan to support the engine.
  9. Remove the engine mount bracket. (Refer to Engine Mechanical System - "Engine Mounting")
  10. Slowly lower the jack and create space to remove the brake booster.
  11. Remove the brake booster.

Inspection

  1. Inspect the check valve in the vacuum hose.
  2. Check the boot for damage.

Installation

  1. Install in the reverse order of removal.
    • Before installing the pin, apply grease to the clevis pin.
    • When installing, use a new clip.
  2. After installation, bleed the brake system. (Refer to Brake System Bleeding)
  3. After installation, perform the air bleeding procedure for the clutch release cylinder after filling with brake fluid. [MT only] (Refer to Clutch - "Clutch Release Cylinder")

Test yourself

A quick Kia Cee'd quiz: every answer comes with an explanation and a link to the manual page.