Hyundai Sonata: Brake System / Master Cylinder Repair procedures

Removal
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the air cleaner assembly (A).

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

4.
Remove the brake fluid from the master cylinder reservoir with a syringe.
   
Do not spill brake fluid on the vehicle, it may damage the paint; if brake fluid does contact the paint, wash it off immediately with water.
5.
Disconnect the brake tube (A) from the master cylinder by loosening the tube flare nut.

Tightening torque:
18.6 ~ 22.6N.m (1.9 ~ 2.3kgf.m, 13.7 ~ 16.6lb-ft)

6.
Remove the master cylinder (B) from the brake booster after loosening the mounting nuts (A).

Tightening torque:
9.8 ~ 15.6N.m (1.0 ~ 1.6kgf.m, 7.2 ~ 11.6lb-ft)

7.
Loosen the screw and then remove the reservior.
Installation
1.
Installation is the reverse of removal.
2.
After installation, bleed the brake system.
(Refer to Brake System Bleeding - "Brake Sysem Bleeding")
(Refer to ESP (Electronic Stability Program System) - "ESP System Bleeding")
Master Cylinder Components and Components Location
Components 1. Reservoir cap2. Reservoir3. Pin4. Master cylinder ...

Brake Line Components and Components Location
Components ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Crankshaft Position Sensor (CKPS) Repair procedures
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Hyundai Sonata LF 2014-2019 Service Manual: Troubleshooting
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