AXLE AND DIFFERENTIAL: REAR AXLE HUB (for AWD without Electric Parking Brake): ON-VEHICLE INSPECTION; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022

Last Modified: 05-13-2024	6.11:8.1.0	Doc ID: RM100000002693A
Model Year Start: 2023	Model: GR Corolla	Prod Date Range: [09/2022 - ]
Title: AXLE AND DIFFERENTIAL: REAR AXLE HUB (for AWD without Electric Parking Brake): ON-VEHICLE INSPECTION; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - ]

ON-VEHICLE INSPECTION

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 and bearing assembly on-vehicle inspection 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	Link
Tire	ECU Data Initialization (When performing tire replacement after RoB code X2104 is output)	Active Torque Split AWD System

NOTICE:

To avoid degrading the precision of the assembly, do not loosen or remove the 2 bolts shown in the illustration.
If the bolts have been loosened or removed, use the following procedure to reassemble the parts.
1. Temporarily install the rear disc brake cylinder assembly with the 2 bolts.
2. Start the engine.
3. Depress the brake pedal to continuously apply hydraulic pressure.
4. Temporarily tighten bolt A to 30 N*m (306 kgf*cm, 22 ft.*lbf).
5. Temporarily tighten bolt B to 30 N*m (306 kgf*cm, 22 ft.*lbf).
6. Fully tighten bolt A to 70 N*m (714 kgf*cm, 52 ft.*lbf).
7. Fully tighten bolt B to 70 N*m (714 kgf*cm, 52 ft.*lbf).
8. Release the brake pedal to release the hydraulic pressure.
9. Check that the 2 bolts are tightened to 70 N*m (714 kgf*cm, 52 ft.*lbf).

HINT:

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

PROCEDURE

1. REMOVE REAR WHEEL

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2. SEPARATE REAR DISC BRAKE CALIPER ASSEMBLY

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3. REMOVE DISK WHEEL SPACER

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4. REMOVE PARKING BRAKE SHOE ADJUSTING HOLE PLUG

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5. REMOVE REAR DISC

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6. INSPECT REAR AXLE HUB BEARING LOOSENESS

(a) Using a dial indicator with magnetic base, check for looseness near the center of the rear axle hub.

Maximum Looseness:

0.05 mm (0.00196 in.)

NOTICE:

Ensure that the dial indicator is set perpendicular to the measurement surface.
Keep the magnet of the dial indicator away from the rear axle hub and bearing assembly.

HINT:

If the looseness exceeds the maximum, replace the rear axle hub and bearing assembly.

7. INSPECT REAR AXLE HUB RUNOUT

(a) Using a dial indicator with magnetic base, check for runout on the surface of the rear axle hub outside the rear axle hub bolts.

Maximum Runout:

0.05 mm (0.00196 in.)

NOTICE:

Ensure that the dial indicator is set perpendicular to the measurement surface.
Make sure to install the tip of the dial indicator towards the outside of the rear axle hub bolts.
Keep the magnet of the dial indicator away from the rear axle hub and bearing assembly.

HINT:

If the runout exceeds the maximum, replace the rear axle hub and bearing assembly.

8. INSTALL REAR DISC

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9. INSTALL REAR DISC BRAKE CALIPER ASSEMBLY

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10. ADJUST PARKING BRAKE

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11. INSTALL PARKING BRAKE SHOE ADJUSTING HOLE PLUG

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12. INSTALL DISK WHEEL SPACER

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13. INSTALL REAR WHEEL

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