Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Removal

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Brake / Brake System (other) / Brake Booster Pump(for Hv Model) / Removal

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed, installed, or replaced during brake booster pump assembly removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

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Auxiliary battery terminal is disconnected/reconnected

Perform steering sensor zero point calibration

Lane Departure Alert System (w/ Steering Control)

Pre-collision System

Intelligent Clearance Sonar System*

Lighting System (for HV Model with Cornering Light)

Memorize steering angle neutral point

Parking Assist Monitor System

Panoramic View Monitor System

NOTICE:

While the auxiliary battery is connected, even if the power switch is off, the brake control system activates when the brake pedal is depressed or any door courtesy switch turns on. Therefore, when servicing the brake system components, do not operate the brake pedal or open/close the doors while the auxiliary battery is connected.

PROCEDURE

1. PRECAUTION

NOTICE:

After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

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2. PERFORM ACCUMULATOR PRESSURE ZERO DOWN

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3. REMOVE COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY

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4. REMOVE FRONT CENTER UPPER SUSPENSION BRACE SUB-ASSEMBLY

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5. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY

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6. DRAIN BRAKE FLUID

NOTICE:

If brake fluid leaks onto any painted surface, immediately wash it off.

7. DISCONNECT NO. 2 BRAKE ACTUATOR HOSE

(a) Slide the clip and disconnect the No. 2 brake actuator hose from the No. 1 brake actuator tube.

8. DISCONNECT ACCUMULATOR TO BRAKE MASTER CYLINDER TUBE

(a) Using a union nut wrench, disconnect the accumulator to brake master cylinder tube from the brake booster pump assembly.

NOTICE:

  • Do not kink or damage the accumulator to brake master cylinder tube.
  • Do not allow any foreign matter such as dirt or dust to enter the accumulator to brake master cylinder tube from the connecting parts.

9. REMOVE BRAKE BOOSTER PUMP ASSEMBLY

(a) Release the lock lever and disconnect the connector from the brake booster pump assembly as shown in the illustration.

Release the lock lever

Disconnect the connector

NOTICE:

Be careful not to allow any brake fluid to enter the connector.

(b) Disengage the claw and clamp to separate the brake booster pump assembly wire harness from the brake actuator bracket assembly.

(c) Remove the nut from the brake booster pump assembly.

(d) Remove the brake booster pump assembly, brake booster pump bushing and brake actuator case collar from the brake actuator bracket assembly as shown in the illustration.

NOTICE:

  • Do not apply excessive force to the brake lines.
  • Do not carry the brake booster pump assembly by the parts shown in the illustration.
  • Do not drop the brake booster pump assembly when carrying it.
  • Be careful not to allow brake fluid to enter the connector.

*a

Union

*b

Connector

*c

Wire Harness

*d

Stud

Remove in this Direction

(e) Remove the 2 brake booster pump collars and 2 brake booster pump bushings from the brake booster pump assembly.

HINT:

Perform this procedure only when replacement of the brake booster pump collars or brake booster pump bushings is necessary.

10. REMOVE NO. 2 BRAKE ACTUATOR HOSE

(a) Slide the clip and remove the No. 2 brake actuator hose from the brake booster pump assembly.
    Installation

    Brake Booster(for Gasoline Model)

    See More:

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    Toyota Avalon (XX50) 2019-2022 Owners Manual

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