LOAD SENSING PROPORTIONING VALVE ON-VEHICLE INSPECTION


  1. SET REAR AXLE LOAD


    • A01BHJ0

      Tech Tips

      If the vehicle unladen weight exceeds the specification, set it by following step 5.

      Rear axle load (including vehicle weight)
      Standard body type
      Model Rear axle load kg (lb)
      ***202R (L) - *E**** 850 (1,870)
      ***203R (L) - *E**** 850 (1,870)
      Others 900 (1,980)
      Wide long body type
      Model Rear axle load kg (lb)
      TRH213R - KDPNK 1000 (2,200)
      **H212R (L) - ***** 1050 (2,310)
      **H213R (L) - ***** 1050 (2,310)
      Wide super long body type
      Model Rear axle load kg (lb)
      **H220R (L) - ****** 1050 (2,310)
      **H221R (L) - ****** 1050 (2,310)
      Others 1000 (2,200)

  2. INSTALL LSPV GAUGE (SST) AND BLEED AIR

    SST
    09709-29018

    • A01BF50

  3. RAISE FRONT BRAKE PRESSURE 9,807 kPa (100 kgf/cm2, 1,422 psi) AND CHECK REAR BRAKE PRESSURE


    • A01BF50

    • Tech Tips

      Gradually depress on the brake pedal until the pressure reaches the specified valve. Do not overshoot the specified pressure. Read the value of rear pressure 2 seconds after adjusting to the specified fluid pressure.

      Rear brake fluid pressure table
      Standard body type
      Model

      Rear brake pressure

      kPa (kgf/cm2, psi)
      ***202R (L) - *E****

      5860 +- 800

      (60 +- 8, 850 +- 116)
      ***203R (L) - *E****

      5860 +- 800

      (60 +- 8, 850 +- 116)
      Others

      5860 +- 800

      (60 +- 8, 850 +- 116)
      Wide long body type
      Model

      Rear brake pressure

      kPa (kgf/cm2, psi)
      **H212R (L) - ******

      6600 +- 800

      (67 +- 8, 957 +- 116)
      **H213R (L) - ******

      6600 +- 800

      (67 +- 8, 957 +- 116)
      Wide super body type
      Model

      Rear brake pressure

      kPa (kgf/cm2, psi)
      **H220R (L) - ******

      6600 +- 800

      (67 +- 8, 957 +- 116)
      **H221R (L) - ******

      6600 +- 800

      (67 +- 8, 957 +- 116)
      Others

      6600 +- 800

      (67 +- 8, 957 +- 116)

  4. RAISE FRONT BRAKE PRESSURE 11,768 kPa (120 kgf/cm2, 1,707 psi) AND CHECK REAR BRAKE PRESSURE

    Rear brake fluid pressure table
    Standard body type
    Model

    Rear brake pressure

    kPa (kgf/cm2, psi)
    ***202R (L) - *E****

    6400 +- 1000

    (65 +- 10, 928 +- 145)
    ***203R (L) - *E****

    6400 +- 1000

    (65 +- 10, 928 +- 145)
    Others

    6400 +- 1000

    (65 +- 10, 928 +- 145)
    Wide long body type
    Model

    Rear brake pressure

    kPa (kgf/cm2, psi)
    **H212R (L) - ******

    7100 +- 1000

    (72 +- 10, 1030 +- 145)
    **H213R (L) - ******

    7100 +- 1000

    (72 +- 10, 1030 +- 145)
    Wide super body type
    Model

    Rear brake pressure

    kPa (kgf/cm2, psi)
    **H220R (L) - ******

    7100 +- 1000

    (72 +- 10, 1030 +- 145)
    **H221R (L) - ******

    7100 +- 1000

    (72 +- 10, 1030 +- 145)
    Others

    7100 +- 1000

    (72 +- 10, 1030 +- 145)

  5. IF VEHICLE UNLADEN WEIGHT EXCEEDS SPECIFICATION, SET IT BY FOLLOWING STEPS


    1. A01BFL9E01

      Make a graph of rear axle load and brake fluid pressure as shown in example 1 or 2, using the applicable data of ABC point data table.

    2. Input the rear axle load on the applicable graph and find out the fluid pressure crossover point.

      Example: When the rear axle load is 1,200 kg (2,646 lb), the fluid pressure crossover point is 6,865 kPa (70 kgf/cm2, 996 psi).

    3. Calculate the rear brake pressure when the front brake pressure is 9,807 kPa (100 kgf/cm2, 1,422 psi) using the following formula.

      X: Fluid Pressure Crossover Point

      X + (100 - X) x 0.25

      Example:

      X: 6,865 kPa (70 kgf/cm2, 996 psi)

      70 + (100 - 70) x 0.25= 77.5

      Rear brake pressure: 7,600 kPa (77.5 kgf/cm2, 1,102 psi)

      Service limit: +- 800 kPa (8 kgf/cm2, 116 psi)

      A01BEZ8E01
      ABC point data table
      Standard body type
      Model A B C
      kg (lb, kN)

      kPa (kg/cm2, psi)

      		 kg (lb, kN)

      kPa (kg/cm2, psi)

      		 kg (lb, kN)

      kPa (kg/cm2, psi)

      ***200R (L) - ******

      ***201R (L) - ******

      693

      (1,528, 6.79)

      1000

      (10, 145)

      892

      (1,967, 8.74)

      4,500

      (46, 653)

      1,470

      (3,241, 14.41)

      9,600

      (98, 1,392)

      ***202R (L) - *D****

      ***203R (L) - *D****

      748

      (1,649, 7.33)

      1000

      (10, 145)

      882

      (1,945, 8.65)

      4,400

      (45, 638)

      1,405

      (3,098, 13.77)

      9,300

      (95, 1,349)

      ***202R (L) - *E****

      ***203R (L) - *E****

      710

      (1,565, 6.96)

      1000

      (10, 145)

      882

      (1,945, 8.65)

      5,300

      (54, 769)

      1,640

      (3,616, 16.07)

      11,900

      (121, 1,726)
      Wide long body type
      Model A B C
      kg (lb, kN)

      kPa (kg/cm2, psi)

      		 kg (lb, kN)

      kPa (kg/cm2, psi)

      		 kg (lb, kN)

      kPa (kg/cm2, psi)
      TRH213R - KDPNK

      801

      (1,766, 7.85)

      2,500

      (25, 363)

      		 - -

      1,580

      (3,483, 15.48)

      13,700

      (140, 1,987)

      **H212R (L) - *****

      **H213R (L) - *****

      781

      (1,722, 7.65)

      2,500

      (25, 363)

      882

      (1,945, 8.65)

      4,400

      (45, 638)

      1,690

      (3,726, 16.56)

      9,900

      (101, 1,436)
      Wide super long body type
      Model A B C
      kg (lb, kN)

      kPa (kg/cm2, psi)

      		 kg (lb, kN)

      kPa (kg/cm2, psi)

      		 kg (lb, kN)

      kPa (kg/cm2, psi)

      **H220R (L) - ******

      **H221R (L) - ******

      760

      (1,676, 7.44)

      2,500

      (25, 363)

      935

      (2,061, 9.16)

      4,800

      (49, 696)

      1,640

      (3,616, 16.07)

      9,500

      (97, 1,378)

      **H222R (L) - ******

      **H223R (L) - ******

      837

      (1,845, 8.20)

      2,500

      (25, 363)

      995

      (2,164, 9.76)

      5,500

      (56, 798)

      1,740

      (3,836, 17.05)

      10,400

      (106, 1,508)

  6. IF NECESSARY, ADJUST FLUID PRESSURE


    1. A01BAFXE01

      Adjust the length of the shackle.

      Lower pressure - Lengthen "A"

      High pressure - Shorten "A"

      Initial set
      120 mm (4.72 in.)
      Adjusting
      112 to 128 mm (4.40 to 5.04 in.)
    2. A01BGHH

      If the pressure cannot be adjusted by the shackle, raise or lower the valve body.

      Lower pressure - Lower

      High pressure - Raise

    3. Torque the nuts.

      Torque
      12.5 N*m (130 kgf*cm, 9 ft.*lbf)

    4. Adjust the length of the shackle again.

      If it cannot be adjusted, inspect the valve body.

  7. REMOVE LSPV GAUGE (SST) AND BLEED BRAKE SYSTEM