LOAD SENSING PROPORTIONING VALVE ON-VEHICLE INSPECTION


  1. CHECK LOAD SENSING PROPORTIONING VALVE ASSEMBLY


    1. A01J5Y6

      Set the vehicle to its curb weight.

    2. Place weights (as necessary) on the rear deck until the rear axle load is as shown below.

      Standard rear axle load
      9808 N (1000 kgf, 2205 lbf)

      Note


      • Be sure that the vehicle is on a level surface before starting the procedure.

      • When placing the weights on the vehicle, place approximately 60 kg (132 lb) above the specification first. Then remove weights as necessary to adjust the load.

    3. A01J6ZDE01

      Set SST, and bleed air from the brake system.

      SST
      09709-29018
    4. A01J59SE01

      Raise the front brake fluid pressure to 10000 kPa (102 kgf/cm2, 1450 psi) when the brake pedal is depressed, and check the rear brake fluid pressure.

      Standard rear brake fluid pressure
      3700 +/-640 kPa (37.7 +/-6.5 kgf/cm2, 536 +/-93 psi)

      Tech Tips

      The pedal should not be depressed twice or released while the specified pressure is being set. Read the value of the rear pressure after adjusting and holding the specified brake fluid pressure for 2 seconds.

      If necessary, adjust the load sensing proportioning valve.

  2. ADJUST LOAD SENSING PROPORTIONING VALVE ASSEMBLY


    1. A01J34AE01

      Loosen the lock nut.

    2. Adjust the rear brake fluid pressure by changing the length of "A" or "B".


      1. For lower pressure - Lengthen "A" or "B"

      2. For higher pressure - Shorten "A" or "B"

        Tech Tips

        The rear brake fluid pressure changes according to the table below by adjusting the length of "A" or "B".

        Pressure (Reference)
        Condition Specified Condition
        For one turn of adjusting nut "A"

        220 kPa (2.2 kgf/cm2, 32 psi)
        For 1 mm (0.0394 in.) of "B" length

        70 kPa (0.7 kgf/cm2, 10.2 psi)

    3. Tighten the lock nut.

      Torque:
      13 N*m  { 130 kgf*cm, 9 ft.*lbf }