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

REPLACEMENT

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during front axle hub bolt removal/installation are shown below.

• When removing or installing the front disc brake caliper assembly, pushing back the disc brake piston may cause a large clearance between the brake pads and brake disc. When the brake pedal is depressed with a large clearance between the brake pads and the brake disc, DTC C1214 related to abnormal brake fluid pressure may be stored. Make sure to clear any DTCs after performing this procedure.
• 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.

HINT:

• Use the same procedure for the RH side and LH side.
• The following procedure is for the LH side.

PROCEDURE

1. PRECAUTION (for HV Model)

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. DISABLE BRAKE CONTROL (for HV Model)

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3. REMOVE FRONT WHEEL

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4. SEPARATE FRONT FLEXIBLE HOSE

(a) Remove the bolt and separate the front flexible hose from the front shock absorber assembly.

5. SEPARATE FRONT DISC BRAKE CALIPER ASSEMBLY

(a) Remove the 2 bolts and separate the front disc brake caliper assembly from the steering knuckle.

NOTICE:

Use wire or an equivalent tool to keep the front disc brake caliper assembly from hanging by the front flexible hose.

6. REMOVE FRONT DISC

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7. REMOVE FRONT AXLE HUB BOLT

(a) Temporarily install 2 service nuts to the front axle hub bolts as shown in the illustration. Recommended Service Nut: Thread diameter: 12.0 mm (0.472 in.) Thread pitch: 1.5 mm (0.0591 in.) NOTICE: Install the service nuts to prevent damage to the front axle hub bolts.

*a Service Nut

(b) Using SST and a screwdriver or an equivalent tool to hold the front axle hub sub-assembly, remove the front axle hub bolt.

SST: 09611-12010

NOTICE:

Do not damage the threads of the front axle hub bolts.

8. INSTALL FRONT AXLE HUB BOLT

(a) Temporarily install a new front axle hub bolt to the front axle hub sub-assembly.

(b) Install a washer and service nut to the front axle hub bolt as shown in the illustration. Recommended Service Nut: Thread diameter: 12.0 mm (0.472 in.) Thread pitch: 1.5 mm (0.0591 in.) HINT: Recommended washer thickness is 5 mm (0.197 in.) or more.

*a Service Nut *b Washer

(c) Using a screwdriver or an equivalent tool to hold the front axle hub sub-assembly, install the front axle hub bolt by tightening the service nut.

NOTICE:

• Install the service nuts to prevent damage to the front axle hub bolts.
• Do not damage the threads of the front axle hub bolts.

(d) Remove the 3 service nuts and washer from the 3 front axle hub bolts.

9. INSTALL FRONT DISC

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10. INSTALL FRONT DISC BRAKE CALIPER ASSEMBLY

(a) Install the front disc brake caliper assembly to the steering knuckle with the 2 bolts.

Torque:

107 N·m {1091 kgf·cm, 79 ft·lbf}

NOTICE:

• Do not twist the front flexible hose when installing the front disc brake caliper assembly.
• Make sure that there is no foreign matter on the threads of the bolt.

11. INSTALL FRONT FLEXIBLE HOSE

(a) Engage the 2 hooks to install the front speed sensor clamp bracket.

Hook

NOTICE:

Do not twist the front speed sensor when installing it.

(b) Install the front flexible hose and front speed sensor to the front shock absorber assembly with the bolt. Torque: 29 N·m {296 kgf·cm, 21 ft·lbf} NOTICE: Do not twist the front flexible hose when installing it.

12. INSTALL FRONT WHEEL

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13. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL (for HV Model)

(a) Connect the reservoir level switch connector.

(b) Connect the cable to the negative (-) auxiliary battery terminal.

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(c) Turn the power switch on (READY).

(d) Depress the brake pedal and release it.

(e) Clear the DTCs.

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