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Home >> Lexus >> 2007 >> LX 470 >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes - Mechanical >> Hydraulic Brake Booster >> Removal

Hydraulic Brake Booster: Removal

NOTE:
  • Before starting the work, make sure that the ignition switch is OFF and depress the brake pedal more than 40 times.
  • As high pressure is applied to the No. 1 brake actuator tube, never deform it.
  • Until the work is completed, do not turn the ignition switch ON.

HINT:

When a pressure in power supply system is released, reaction force becomes light and stroke becomes longer.

  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    NOTE: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.
  2. DRAIN BRAKE FLUID 
    NOTE: Wash off brake fluid immediately if it comes in contact with any painted surface.
  3. REMOVE FRONT DOOR SCUFF PLATE LH 
  4. REMOVE COWL SIDE TRIM BOARD LH 
  5. REMOVE NO. 1 INSTRUMENT PANEL LOWER PANEL (See  REMOVAL  ) 
  6. REMOVE INSTRUMENT PANEL FINISH LOWER PANEL LH (See  REMOVAL  ) 
  7. REMOVE NO. 2 HEATER TO REGISTER DUCT (See  REMOVAL  ) 
  8. REMOVE SKID CONTROL ECU ASSEMBLY 
    1. Remove the 2 nuts and skid control ECU.
  9. REMOVE CHARCOAL CANISTER SUB-ASSEMBLY 
  10. REMOVE HYDRAULIC BRAKE BOOSTER ASSEMBLY 
  1. Disconnect the 5 connectors.
    Fig 1: Identifying Connectors
    G04063973Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Using SST, disconnect the 4 brake lines.
    Fig 2: Identifying Brake Lines
    G04063974Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    SST 09023-00101 

  3. Remove the clip and clevis pin.
  4. Remove the 4 nuts.
    Fig 3: Identifying Nuts
    G04063975Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. Remove the booster and gasket.
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