SERVICE MANUAL
  Applies to: Hyundai Coupe/Tiburon 1998-2001
GROUP
Brake Systems Conventional Brake System
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PROPORTIONING VALVE 

Do not disassemble the proportioning valve. The proportioning valve regulates the distribution of fluid pressure to the front and rear brakes to prevent skidding in the event of rear wheel lock and to obtain a higher brake efficiency.

PROPORTIONING VALVE FUNCTION TEST
  1. Connect two pressure gauges, one to the input side and one to the output side of the proportioning valve.

    NOTE
    Be sure to bleed the system after you connect the pressure gauges.
  1. With the brakes applied, measure the input pressure and the output pressure. If the measured pressures are within the ranges as illustrated, the proportioning valve is good.

  1. Reconnect the brake lines in their original positions and bleed the system.

    NOTE
    This figure shows characteristics of the proportioning valve during pressure increase.
    A
    51 ± 3.5
    B
    80
    C
    40
    D
    140
    E
    67 ± 4

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PROPORTIONING VALVE INSTALLATION 
  1. Install the brake lines according to the illustration.

  1. Tighten the flare nuts and bleed the system.

    TORQUE SPECIFICATION
    Brake tube flare nut 13-17 Nm ( 130-170 kg·cm, 9-12 lb·ft )
    Proportioning valve mounting nut 8-12 Nm ( 80-120 kg·cm, 5.8-8.7 lb·ft )