Hyundai Elantra (CN7): Brake System / Master Cylinder

Hyundai Elantra (CN7) 2021-2025 Service Manual / Brake System / Brake System / Master Cylinder

Components and components location

Components

1. Reservoir cap
2. Reservoir
3. Brake fluid lever sensor
4. Master cylinder
5. Brake booster
6. Push road

Repair procedures

Removal
[LHD]
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the brake fluid from the master cylinder reservior 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.
•
Make sure no dirt or other foreign matter is allowed to contaminate the brake fluid.
3.
Remove the battery.
(Refer to Engine Electrical System - "Battery")
4.
Disconnect the brake fluid level sensor connector (A) and then removing the wiring clip (B).

5.
Separate the brake tube (A) from the master cylinder by loosening the tube flare nut.
Tightening torque :
18.6 - 22.6 N.m (1.9 - 2.3 kgf.m, 13.7 - 16.6 lb-ft)

6.
Remove the master cylinder (A) after loosening the master cylinder nuts.
Tightening torque :
12.7 - 15.7 N.m (1.3 - 1.6 kgf.m, 9.4 - 11.6 lb-ft)

[RHD]
1.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
2.
Remove the brake fluid from the master cylinder reservior 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.
•
Make sure no dirt or other foreign matter is allowed to contaminate the brake fluid.
3.
Disconnect the brake fluid level sensor connector (A).

4.
Remove the brake tube after loosening the mounting bolts (A).
Tightening torque :
18.6 - 22.6 N.m (1.9 - 2.3 kgf.m, 13.7 - 16.6 lb-ft)

5.
Remove the master cylinder (A) after loosening the mounting nuts.
Tightening torque :
12.7 - 15.7 N.m (1.3 - 1.6 kgf.m, 9.4 - 11.6 lb-ft)

Installation
1.
To install, reverse the removal procedure.
   
•
Before installing the pin, apply the grease to the joint pin.
•
Use a new snap pin whenever installing.
2.
After installation, bleed the brake system.
(Refer to Brake System - "Brake Bleeding Prcoedures")
3.
Check the brake oil leakage and pedal operating condition.

    Components and components location Components1. Reservoir cap2. Reservoir3. Brake fluid lever sensor4. Master cylinder5. Brake booster6. Push road Repair procedures Brake Booster Operating Test1.

    Components and components location Components Repair procedures RemovalBrake Tube [Engine Room]1.Disconnect the brake fiuid level switch connector, and remove the reservoir cap.

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