Hyundai Elantra AD Quiz
Brake System

Front Disc Brake Repair Procedures

In this manual: Brake System
General Information — 9Engine Mechanical System — 84Engine Electrical System — 60Emission Control System — 24Engine Control System/Fuel System — 90Automatic Transmission — 92Drive Shaft and Axle — 20Suspension System — 31Steering — 20Restraints — 50Brake System — 63Body (Interior and Exterior) — 214Body Electrical System — 221Heating, Ventilation, and Air Conditioning — 71
29steps
~179min
5/5difficulty
1special tools
04080120160200127.594N·mlb·ft
Tightening torque found on this page
Done 0 of 29

Removal

  1. Loosen the wheel nuts slightly. Raise the vehicle and make sure it is securely supported.
  2. Remove the front wheel and tire (A) from the front hub.

    Tightening torque: 107.9 - 128 N·m
    • Be careful not to damage the hub bolts when removing the front wheel and tire (A).
  3. Loosen the brake hose mounting bolt and remove the brake hose bracket.

    Tightening torque: 8.8 - 13.7 N·m

  4. Lower the caliper body by loosening the guide rod bolt.

    Tightening torque: 2.2 - 3.2 kgf·m

  5. Remove the pad return spring (A).
    • Pad return springs must be replaced with new ones every time the pads are replaced.
    • Technicians must be careful not to deform the pad return springs.
    • Deformed pad return springs may cause improper braking and increased fuel consumption.
  6. Remove the brake pad.
  7. Separate the pad retainer. Then remove the caliper support by loosening the caliper support bolts.

    Tightening torque: 78.5 - 98 N·m

  8. Remove the front brake disc by loosening the screws (A).

    Tightening torque: 4.9 - 5.9 N·m

Replacement

  1. Loosen the brake hose mounting bolt and remove the brake hose bracket.

    Tightening torque: 8.8 - 13.7 N·m

  2. Lower the caliper body by loosening the guide rod bolt.

    Tightening torque: 2.2 - 3.2 kgf·m

  3. Remove the pad return spring (A).
    • Pad return springs must be replaced with new ones every time the pads are replaced.
    • Technicians must be careful not to deform the pad return springs.
    • Deformed pad return springs may cause improper braking and increased fuel consumption.
  4. Replace the brake pad with a new one.
  5. Install the pad return spring (A).
    • Pad return springs must be replaced with new ones every time the pads are replaced.
    • Technicians must be careful not to deform the pad return springs.
    • Deformed pad return springs may cause improper braking and increased fuel consumption.
  6. Use SST (09581-2T100) when installing the brake caliper assembly.
    • Connect the air hose (B) to the SST after making sure the SST valve is securely closed.
    • Connect the SST to the caliper and press the piston of the caliper while slowly opening the SST valve counterclockwise.
    • Close the SST valve (A) and disconnect the air hose (B). Then reopen the valve to release the remaining air and remove the SST from the caliper.
  7. Install the caliper body (A), then tighten the guide rod bolt (B).

    Tightening torque: 21.6 ~ 31 N·m

  8. Install the brake hose mounting bolt with the brake hose bracket to the shock absorber.

    Tightening torque: 8.8 - 13.7 N·m

Inspection

Front Brake Disc Thickness Inspection
  1. Inspect the brake pads for wear and discoloration.
  2. Inspect the brake disc for damage and cracks.
  3. Remove all rust and contamination from the surface and measure the disc thickness at at least 8 points spaced equally (5 mm) from the outer edge of the brake disc. Front brake disc thickness - Standard: 23 mm (0.91 in.) - Service limit: 21.4 mm (0.84 in.) Runout: less than 0.005 mm (0.0002 in.)
  4. If wear exceeds the limit, replace the discs and pads as a set on both the left and right sides of the vehicle.
  5. Inspect the pad wear. Measure the pad thickness and replace the pad if it is less than the specified value. Pad thickness Standard: 11 mm (0.43 in.) Maximum operating limit: 2.0 mm (0.0787 in.)
  6. Make sure grease is applied to the sliding contact points, as well as to the abutment and metal backing, and check for damage.
  7. Position a dial indicator approximately 5 mm (0.2 in.) from the outer edge of the brake disc and measure the disc runout.

    Brake disc runout Limit: 0.04 mm (0.0016 in.) or less (new)

  8. If brake disc runout exceeds the limit, replace the disc, then measure the runout again.
  9. If runout does not exceed the limit, install the brake disc rotated 180°, then inspect the brake disc runout again.
  10. If runout cannot be corrected by changing the brake disc position, replace the brake disc.
Front Brake Pad Inspection / Front Brake Disc Runout Inspection

Installation

  1. To install, reverse the removal procedure.
  2. Use SST 09581-2T100 when installing the brake caliper assembly.
    • Connect the air hose (B) to the SST after making sure the SST valve is securely closed.
    • Connect the SST to the caliper and press the piston of the caliper while slowly opening the SST valve counterclockwise.
    • Close the SST valve (A) and disconnect the air hose (B). Then reopen the valve to release the remaining air and remove the SST from the caliper.
  3. After installation, bleed the brake system. (Refer to Brake System - "Brake Bleeding") (Refer to Brake System - "ABS Bleeding") (Refer to Brake System - "ESP Bleeding")

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