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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 115 (Disc Brake System (HEV)) >> Repair Procedures >> Operation and Leakage Check >> Brake Wheel Line Bleeding Procedure

Brake Wheel Line Bleeding Procedure

WARNING: This page is about a different variant/trim than selected.
CAUTION: The 12V battery can be discharged if the brake pedal is excessively depressed without the engine running.
  1. Make sure the brake fluid in the reservoir is at the MAX (upper) level line.
  2. Use the air bleeding tool (SST:09580-3D100) and feed oil pressure 0.3~0.35 MPa (43.5~50.7 psi) into the reservoir.
  3. Loosen the bleed screw (A) on the wheel and initiate air bleeding on all the wheels.

    [Front] 

    Fig 1: Identifying Bleed Screw On Wheel (Front)
    G10589258Courtesy of HYUNDAI MOTOR AMERICA

    [Rear] 

    Fig 2: Identifying Bleed Screw On Wheel (Rear)
    G10589259Courtesy of HYUNDAI MOTOR AMERICA
    CAUTION: When bleeding air, make sure the brake fluid level does not go below the "MIN" line.
  4. Repeat the procedure for wheel in the sequence shown in illustration below until air bubbles no longer appear in the fluid.
    Fig 3: Brake Bleeding Sequence
    G10589260Courtesy of HYUNDAI MOTOR AMERICA
  5. Tighten the bleeder screw.

    Tightening torque:  6.9 ~ 12.7 N.m (0.7 ~ 1.3 kgf.m, 5.1 ~ 9.4 lb-ft)

  6. Refill the master cylinder reservoir to MAX (upper) level line.