Hyundai Santa Fe (TM): Brake System / Rear Disc Brake. Repair procedures

Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual / Brake System / Brake System / Rear Disc Brake. Repair procedures

Removal
  
•
Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift.
(Refer to General Information - "Lift and Support Points")
1.
Before removing the rear caliper, perform “Brake Pad Replacement Mode” using the self-diagnosis.
Raise the vehicle, and make sure it is securely supported.
2.
Select C2 (Release) on the screen below.
3.
Turn ignition switch OFF and disconnect the negative (-) battery cable.
4.
Loosen the wheel nuts slightly.
Raise the vehicle, and make sure it is securely supported.
5.
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).

6.
Disconnect the EPB actuator connetor (A).
7.
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)

8.
Remove the caliper body (A) after loosening the guide rod bolt.
Tightening torque :
37.3 - 41.2 N.m (3.8 - 4.2 kgf.m, 27.5 - 30.4 lb-ft)

9.
Remove the brake pad (A).
10.
Remove the pad liner (A).
11.
Remove the caliper carrier (A) after loosening the caliper mounting bolt.
Tightening torque :
98.1 - 117.6 N.m (10.0 - 12.0 kgf.m, 72.3 - 86.8 lb-ft)

12.
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
Rear 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 5 mm (0.20 in) from the brake disc outer circle.
Rear brake disc thickness
- Standard (Solid disc) : 11 mm (0.43 in) (16 inch)
- Service Limit : 9 mm (0.35 in) (16 inch)
- Standard (Ventilated disc) : 20 mm (0.78 in) (17 inch)
- Service Limit : 18 mm (0.70 in) (17 inch)
Difference in thickness of each measuring part :
Less than 0.015 mm (0.0002 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.
Rear Brake Disc Runout Check
1.
Place a dial gauge about 10 mm (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 (0.0020 in) or less (new one)

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.
Install in the reverse order of removal.
2.
When istalling, press and rotate the piston into the caliper body until it is fully retracted.
3.
After installation, bleed the brake system.
(Refer to Brake system - "Brake Bleeding Procedures")
4.
After installing the rear caliper, perform “Brake Pad Replacement Mode” using the self-diagnosis.
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

    Components 1. EPB actuator 2. Caliper body 3. Caliper carrier 4. Pad retainer 5. Brake pad

    Replacement    • Be careful not to damage the parts located under the vehicle (floor under cover, fuel filter, fuel tank and canister) when raising the vehicle using the lift.

    Other information:

    Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual: Components and components location

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