Hyundai Elantra Owners and Service Manuals

Hyundai Elantra: Brake System / Rear Disc Brake

Hyundai Elantra (CN7) 2021-2024 Service Manual / Brake System / Brake System / Rear Disc Brake

Components and components location
Components
[Rear parking cable type]

1. Rear caliper
2. Caliper carrier
3. Brake pad
4. Pad liner

[Rear EPB type]

1. Rear caliper
2. Caliper carrier
3. Brake pad
4. Pad liner

Repair procedures
Removal
1.
Loosen the wheel nuts slightly.
Raise the vehicle, and make sure it is securely supported.
2.
Remove the rear wheel and tire (A) from the rear hub.
Tightening torque :
107.9 - 127.5 N.m (11.0 - 13.0 kgf.m, 79.6 - 94.0 lb-ft)
   
•
Be careful not to damage the hub bolts when removing the rear wheel and tire (A).

3.
Loosen the brake hose bolt (A) from the caliper seperate the brake hose.
Tightening torque :
24.5 - 29.4 N.m (2.5 - 3.0 kgf.m, 18.1 - 21.7 lb-ft)

4.
Remove the return spring (A).

5.
Disconnect the parking brake cable (B) after remove fixing clip (A).

6.
Remove the caliper body (A) by loosening the guide rod bolt.
Tightening torque :
21.6 - 31.4 N.m (2.2 - 3.2 kgf.m, 15.9 - 23.1 lb-ft)

7.
Remove the brake pad (A).

8.
Remove the pad liner (A).

9.
Remove the caliper carrier (A) by loosening the caliper mouniting bolts.
Tightening torque :
78.5 - 98.1 N.m (8.0 - 10.0 kgf.m, 57.9 - 72.3 lb-ft)

10.
Remove the front brake disc (A) by loosening the screws.
Tightening torque :
4.9 - 5.8 N.m (0.5 - 0.6 kgf.m, 3.6 - 4.3 lb-ft)

[Rear torsion beam EPB type]
1.
Before removing the rear caliper, perform "Brake Pad Replacement Mode" using the diagnostic tool.

2.
Select C2 (Release) on the screen below.

3.
Loosen the wheel nuts slightly.
Raise the vehicle, and make sure it is securely supported.
4.
Remove the rear wheel and tire (A) from the rear hub.
Tightening torque :
107.9 - 127.5 N.m (11.0 - 13.0 kgf.m, 79.6 - 94.0 lb-ft)
   
•
Be careful not to damage the hub bolts when removing the rear wheel and tire (A).

5.
Disconnect the EPB actuator connector (A).

6.
Remove the hose after loosening the brake hose bolt (A) from the caliper.
Tightening torque :
24.5 - 29.4 N.m (2.5 - 3.0 kgf.m, 18.1 - 21.7 lb-ft)

7.
Remove the caliper body (A) after loosening the guide rod bolt.

8.
Remove the brake pad (A).

9.
Remove the pad liner (A).

10.
Remove the caliper carrier (A) after loosening the caliper mounting bolt.
Tightening torque :
78.5 - 98.1 N.m (8.0 - 10.0 kgf.m, 57.9 - 72.3 lb-ft)

11.
Remove the rear brake disc (A) after loosening the screw.
Tightening torque :
4.9 - 5.9 N.m (0.5 - 0.6 kgf.m, 3.6 - 4.3 lb-ft)

[Rear multi link parking cable type]
1.
Loosen the wheel nuts slightly.
Raise the vehicle, and make sure it is securely supported.
2.
Remove the rear wheel and tire (A) from the rear hub.
Tightening torque :
107.9 - 127.5 N.m (11.0 - 13.0 kgf.m, 79.6 - 94.0 lb-ft)
   
•
Be careful not to damage the hub bolts when removing the rear wheel and tire (A).

3.
Remove the hose from the caliper after loosening the brake hose bolt (A).
Tightening torque :
24.5 - 29.4 N.m (2.5 - 3.0 kgf.m, 18.1 - 21.7 lb-ft)

4.
Remove the return spring (A).

5.
Disconnect the parking brake cable (A) after removing the fixing clip.

6.
Remove the caliper body (A) after loosening the guide rod bolts.
Tightening torque :
21.6 - 31.4 N.m (2.2 - 3.2 kgf.m, 15.9 - 23.1 lb-ft)

7.
Remove the brake pad (A).

8.
Remove the pad liner (A).

9.
Remove the caliper carrier (A) after loosening the caliper mounting bolts.
Tightening torque :
78.5 - 98.1 N.m (8.0 - 10.0 kgf.m, 57.9 - 72.3 lb-ft)

10.
Remove the brake disc (A) after loosening the mounting screw.
Tightening torque :
4.9 - 5.8 N.m (0.5 - 0.6 kgf.m, 3.6 - 4.3 lb-ft)

[Rear multi link EPB type]
1.
Before removing the rear caliper, perform "Brake Pad Replacement Mode" using the diagnostic tool.

2.
Select C2 (Release) on the screen below.

3.
Loosen the wheel nuts slightly.
Raise the vehicle, and make sure it is securely supported.
4.
Remove the rear wheel and tire (A) from the rear hub.
Tightening torque :
107.9 - 127.5 N.m (11.0 - 13.0 kgf.m, 79.6 - 94.0 lb-ft)
   
•
Be careful not to damage the hub bolts when removing the rear wheel and tire (A).

5.
Disconnect the EPB actuator connector (A).

6.
Remove the hose after loosening the brake hose bolt (A) from the caliper.
Tightening torque :
24.5 - 29.4 N.m (2.5 - 3.0 kgf.m, 18.1 - 21.7 lb-ft)

7.
Remove the caliper body (A) after loosening the guide rod bolt.

8.
Remove the brake pad (A).

9.
Remove the brake pad (A).

10.
Remove the caliper carrier (A) after loosening the caliper mounting bolt.

11.
Remove the rear brake disc (A) after loosening the screw.
Tightening torque :
4.9 - 5.9 N.m (0.5 - 0.6 kgf.m, 3.6 - 4.3 lb-ft)

Inspection
Front Brake Disc Thickness Check
1.
Check the brake disc for damage and cracks.
2.
Remove all rust and contamination from the surface, and measure the disc thickness at 24 points, at least, of same distance (5mm) from the brake disc outer circle.
Front brake disc thickness
Standard : 10 mm (0.39 in)
Service limit : 8.4 mm (0.33 in)
Difference in thickness of each measuring part : Less than 0.015 mm (0.0004 in.) (Circumferential direction), 0.015 mm (0.0004 in.) (Radial)

3.
If wear exceeds the limit, replace the discs and pad assembly left and right of the vehicle.
Front Brake Disc Runout Check
1.
Place a dial gauge about 10mm (0.20 in) from the outer circumference of the brake disc, and measure the runout of the disc.
Brake disc runout
Limit : 0.055 mm (0.0016 in.) or less

2.
If the runout of the brake disc exceeds the limit specification, replace the disc, and then measure the runout again.
3.
If the runout cannot be corrected by changing the position of the brake disc, replace the brake disc.
Installation
1.
To install, reverse the removal procedures.
2.
Press in the caliper piston.
[Rear parking cable type]

[Rear EPB type]

   
•
For the brake pad to locate on the normal operation position, depress the brake pedal halfway several times until the brake pedal gains resistance.
•
After disassembling/assembling the caliper body or replacing the brake caliper, parking brake cable or brake disc, re-adjust the parking brake.
3.
After installation, bleed the brake system.
(Refer to Brake System - "Brake Bleeding Prcoedures")
4.
After installing the rear caliper (EPB applied), perform “Brake Pad Replacement Mode” using the diagnostic tool.

5.
Select C1 (Apply) on the screen below.

6.
After replacing the rear caliper, make sure that the caliper is installed correctly by performing "Check assembling (ECU replaced)" from the option.

Adjustment
[Rear parking cable type]
   
•
Re-setting of the parking brake is necessary after overhauling the caliper body, or if the brake calipers, housing, parking brake cable or brake discs have been changed.
1.
Remove the floor console to reach the adjusting nut.
2.
Loosen the parking brake cable until both operating levers rest in fully off position.
3.
Bring the brake pads in their operating position by pressing the brake pedal down several times until there is resistance.
4.
Tension the parking brake cable by tightening the adjusting nut, until the operating levers on both calipers lift from the stop, up to a distance of (A) and (D) between operating lever (B) and stopper (C).
Distance (A + D) : Max. 3 mm (0.12 in)
[G 1.6 MPI / LPI]

[G 1.6 T-GDI]

5.
Refit the floor console.
6.
Parking brake lever in the car must be in fully loosened position.
7.
If the handbrake cables where changed, actuate the parking brake a few times with maximum force to stretch the parking brake cables, and then control adjusting as above.
8.
Check the wheels of their free operation.
9.
Test drive.

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