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Home >> Lexus >> 2010 >> RX 350 FWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes (Hydraulic) (Service Information) >> Brake Pedal >> ADJUSTMENT (To 8/2009) >> Adjustment

ADJUSTMENT (To 8/2009): Adjustment

  1. INSPECT AND ADJUST BRAKE PEDAL HEIGHT 
    1. Check the brake pedal height.
      1. Turn back the carpet.
      2. Measure the shortest distance between the brake pedal surface and front floor footrest.
        Fig 1: Measure the shortest distance
        GTY256074Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 Stop Light Switch Assembly
        *2 Push Rod Clevis Lock Nut
        *3 Front Floor Footrest
        *4 Pedal Height

        Pedal height from front floor footrest

        148.8 to 158.8 mm (5.86 to 6.25 in.)

    2. Adjust the brake pedal height.
      1. Remove the No. 1 instrument panel under cover sub-assembly. Refer to REMOVAL - Step 21 .
      2. Remove the stop light switch assembly. Refer to REMOVAL - Step 2 .
      3. Loosen the push rod clevis lock nut.
      4. Adjust the brake pedal height by turning the push rod.

        Pedal height from front floor footrest

        148.8 to 158.8 mm (5.86 to 6.25 in.)

      5. Tighten the push rod clevis lock nut.

        Torque: 26 N*m (265 kgf*cm, 19 ft.*lbf) 

      6. Install and adjust the stop light switch assembly. Refer to INSTALLATION - Step 1 .
        NOTE:

        Do not depress the brake pedal.

      7. Install the No. 1 instrument panel under cover sub-assembly. Refer to INSTALLATION - Step 39 .
  2. INSPECT BRAKE PEDAL FREE PLAY 
    1. Stop the engine. Depress the pedal several times until no vacuum is left in the brake booster. Release the brake pedal.
      Fig 2: Identifying Pedal Free Play
      GTY278277Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Depress the pedal until a slight resistance is felt. Measure the distance as shown in the illustration.

      Pedal free play

      1.0 to 6.0 mm (0.0394 to 0.236 in.)

      If the pedal free play is not as specified, check the stop light switch clearance. Refer to INSTALLATION - Step 1 . If the pedal free play is as specified, proceed to the Inspect Brake Pedal Reserve Distance procedure.

  3. INSPECT BRAKE PEDAL RESERVE DISTANCE 

    HINT: 

    Measure the distance at the same point used for the brake pedal height inspection.

    1. Release the parking brake pedal.
    2. With the engine running, depress the brake pedal and measure the pedal reserve distance.

      Pedal reserve distance from the front floor footrest at 500 N (51 kgf, 112 lbf)

      More than 83.7 mm (3.30 in.)

      If the distance is not as specified, troubleshoot the brake system. Refer to PROBLEM SYMPTOMS TABLE .

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