Hyundai Elantra: Brake System / Master Cylinder Repair procedures

Hyundai Elantra AD (2016-2020) Service Manual / Brake System / Brake System / Master Cylinder Repair procedures

Removal

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

2.	Remove the battery. (Refer to Engine Electrical System - "Battery")

3.	Remove the ECM (A).

4.	Loosen the mounting bolts (A) and then remova the ECM bracket (B).

5.	Disconnect the brake fluid level switch connector.

6.	Remove the wiring fixed clip.

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.

8.	Remove the clutch brake hose (A). [M/T Only]

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

Tightening torque:

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

ABS : 12.7 ~ 16.7 N.m (1.3 ~ 1.7 kgf.m, 9.4 ~ 12.3 lb-ft)

10.

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

Tightening torque:

12.7 ~ 16.7 N.m (1.3 ~ 1.7 kgf.m, 9.4 ~ 12.3 lb-ft)

11.	Separate the reservoir by loosening the screw.

Installation

1.	To install, reverse the removal procedure.

2.	After installing, bleed the brake system. (Refer to Brake System -"Brake System Bleeding") (Refer to Brake system - "ABS System Bleeding) (Refer to Brake system - "ESP System Bleeding)

Master Cylinder Components and Components Location

Components 1.Reservoir cap2. Reservoir3.Reservoir4. Grommet5. Master cylinder ...

Brake Line Components and Components Location

Components [DISC TYPE] [DRUM TYPE] ...

Other information:

Hyundai Elantra AD (2016-2020) Service Manual: Brake Booster Repair procedures
Brake Booster Operating Test For simple checking of the brake booster operation, carry out the following tests. 1. Run the engine for one or two minutes, and then stop it. If the pedal depresses fully the first time but gradually becomes higher when depressed succeeding times, the booster ...

Hyundai Elantra AD (2016-2020) Service Manual: Occupant Classification System (OCS) Repair procedures
Removal Occupant Classification System (OCS) Unit 1. Disconnect the battery negative cable, and wait for at least three minutes before beginning work. 2. Remove the front passenger seat assembly. (Refer to Body - "Front Seat Assembly") 3. Disconnect the occupant classification system u ...