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 rear axle hub bolt removal/installation are shown below.

• When removing or installing the rear 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 REAR WHEEL

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4. DISCONNECT NO. 2 PARKING BRAKE WIRE ASSEMBLY

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5. SEPARATE REAR DISC BRAKE CALIPER ASSEMBLY

(a) Remove the 2 bolts and separate the rear disc brake caliper assembly from the rear axle carrier sub-assembly.

NOTICE:

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

6. REMOVE REAR DISC

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7. REMOVE REAR AXLE HUB BOLT

(a) Temporarily install 2 service nuts to the rear 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 rear axle hub bolts.

*a Service Nut

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

SST: 09628-10011

NOTICE:

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

8. INSTALL REAR AXLE HUB BOLT

(a) Temporarily install a new rear axle hub bolt to the rear axle hub and bearing assembly.

*a Service Nut *b Washer

(b) Install a washer and service nut to the rear 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.

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

NOTICE:

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

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

9. INSTALL REAR DISC

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10. INSTALL REAR DISC BRAKE CALIPER ASSEMBLY

(a) Install the rear disc brake caliper assembly to the rear axle carrier sub-assembly with the 2 bolts.

Torque:

107 N·m {1091 kgf·cm, 79 ft·lbf}

11. CONNECT NO. 2 PARKING BRAKE WIRE ASSEMBLY

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12. INSTALL REAR 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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