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Home >> Infiniti >> 2018 >> Q70 5.6 Luxe, RWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brake System (Except Hybrid) >> Periodic Maintenance >> Brake Pedal >> Inspection and Adjustment >> Adjustment

Inspection and Adjustment: Adjustment

Brake Pedal Height 

  1. Remove instrument lower panel LH. Refer to Removal and Installation .
  2. Disconnect the Stop Lamp Switch harness connector and the Brake Switch harness connector.
  3. Loosen the Stop Lamp Switch and Brake Switch by turning it 45 degrees counterclockwise.
  4. Loosen the input rod lock nut (1).
    GNSJPFIA0662Z-662Courtesy of NISSAN NORTH AMERICA, INC.
  5. Rotate the input rod (2), and adjust the brake pedal to the specified height.
    CAUTION: The threaded end of the input rod must project to the inner side of the clevis (3).

    H 1

    : Refer to Brake Pedal .
    GNSJPFIA0279Z-279Courtesy of NISSAN NORTH AMERICA, INC.
  6. Tighten the lock nut. Refer to Exploded View .
  7. Adjust the clearance between the stopper rubber and the Stop Lamp Switch and Brake Switch threaded end after adjusting the brake pedal height.

Stop Lamp Switch and Brake Switch 

  1. Remove instrument lower panel LH. Refer to Removal and Installation .
  2. Disconnect the Stop Lamp Switch harness connector and the Brake Switch harness connector.
  3. Loosen the Stop Lamp Switch and Brake Switch by turning it 45 degrees counterclockwise.
  4. Press-fit the Stop Lamp Switch and Brake Switch (2) until the Stop Lamp Switch and Brake Switch hits the stopper rubber (1) 45 degrees clockwise while pulling the brake pedal pad slightly.
    GNSJPFIA0122Z-122Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION:
    • The clearance (C) between the stopper rubber and Stop Lamp Switch and Brake Switch threaded end and must be the specified value.

      C

      : Refer to Brake Pedal .
    • The stop lamp must turn off when the brake pedal is released.

Brake Pedal Play 

  1. Remove instrument lower panel LH. Refer to Removal and Installation .
  2. Disconnect the Stop Lamp Switch harness connector and the Brake Switch harness connector.
  3. Loosen the Stop Lamp Switch and Brake Switch by turning it 45 degrees counterclockwise.
  4. Press-fit the Stop Lamp Switch and Brake Switch (2) until the Stop Lamp Switch and Brake Switch hits the stopper rubber (1) 45 degrees clockwise while pulling the brake pedal pad slightly.
    GNSJPFIA0122Z-122Courtesy of NISSAN NORTH AMERICA, INC.
    CAUTION:
    • The clearance (C) between the stopper rubber and Stop Lamp Switch and Brake Switch threaded end and must be the specified value.

      C

      : Refer to Brake Pedal .
    • The stop lamp must turn off when the brake pedal is released.

Depressed Brake Pedal Height 

  1. Perform the air bleeding. Refer to Bleeding Brake System .
  2. Check the height between the dash lower panel (1) and the top face of the brake pedal (H 2 ) when depressing the brake pedal with a force of 490 N (50 kg, 110 lb) while the engine is running.
    GNSJPFIA0068Z-068Courtesy of NISSAN NORTH AMERICA, INC.

    H 2

    : Refer to Brake Pedal .
    CAUTION: Perform it with the floor trim removed.
  3. Adjust the brake pedal play after adjusting the brake pedal height, clearance between the stopper rubber and the Stop Lamp Switch and Brake Switch threaded end.
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