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Home >> Lexus >> 2010 >> RX 350 FWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes (Hydraulic) (Service Information) >> Brake Booster >> REMOVAL (To 8/2009) >> Removal

REMOVAL (To 8/2009): Removal

NOTE:

Make sure to release vacuum from the brake booster before removing the master cylinder from the brake booster.

  1. REMOVE BRAKE MASTER CYLINDER SUB-ASSEMBLY 

    HINT: 

    Refer to the instructions for Removal of the brake master cylinder sub-assembly. Refer to REMOVAL .

  2. DISCONNECT VACUUM HOSE 
    1. Slide the clip and disconnect the vacuum hose.
      Fig 1: Slide the clip
      GTY270056Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. REMOVE BRAKE VACUUM CHECK VALVE ASSEMBLY 
    1. Remove the vacuum check valve assembly from the brake booster assembly.
  4. REMOVE CHECK VALVE GROMMET 
    1. Remove the check valve grommet from the brake booster assembly.
  5. DISCONNECT FUEL VAPOR FEED HOSE 
    1. Slide the clip and disconnect the fuel vapor feed hose.
      Fig 2: Slide the clip
      GTY270270Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. SEPARATE ENGINE ROOM MAIN WIRE 
    1. Disengage the 2 clamps.
      Fig 3: Disengage the 2 clamps
      GTY271482Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Raise the lever while pushing the lock on the lever, and disconnect the ECM connector.
      Fig 4: Raise the lever while pushing the lock
      GTY272106Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Disengage the 6 clamps and separate the engine room main wire.
      Fig 5: Disengage the 6 clamps
      GTY271649Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. SEPARATE NO. 5 FRONT BRAKE TUBE 
    1. Using a union nut wrench, disconnect the front flexible hose LH from the No. 5 front brake tube.
      Fig 6: Disconnect The Front Flexible Hose LH
      GTY277088Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disengage the grommet of the No. 5 front brake tube.
      Fig 7: Disengage the grommet
      GTY271154Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Using a union nut wrench, disconnect the No. 5 front brake tube.
      Fig 8: Disconnect The No. 5 Front Brake Tube
      GTY270508Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Be careful not to damage the brake lines or clamps. If any parts are damaged, replace them with new ones.

    4. Disengage the clamp and separate the No. 5 front brake tube from the body.
  8. SEPARATE NO. 1 FRONT BRAKE TUBE ASSEMBLY 
    1. Disengage the 3 clamps and separate the No. 1 front brake tube assembly.
      Fig 9: Disengage the 3 clamps
      GTY270964Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Be careful not to damage the brake lines or clamps. If any parts are damaged, replace them with new ones.

  9. REMOVE NO. 1 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY  . Refer to REMOVAL - Step 21
  10. REMOVE BRAKE PEDAL RETURN SPRING  See step  11
  11. SEPARATE BRAKE MASTER CYLINDER PUSH ROD CLEVIS  See step  13
  12. REMOVE BRAKE BOOSTER ASSEMBLY 
    1. Remove the 4 nuts and brake booster assembly.
      Fig 10: Remove the 4 nuts
      GTY284079Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Do not damage the brake lines.

  13. REMOVE BRAKE MASTER CYLINDER PUSH ROD CLEVIS 
    1. Loosen the lock nut, and remove the brake master cylinder push rod clevis and lock nut from the brake booster assembly.
  14. REMOVE BRAKE BOOSTER GASKET 
    1. Remove the brake booster gasket from the brake booster assembly.