Toyota Prius: Rear Axle Hub (for 2wd)

• On-vehicle Inspection
• Removal
• Installation

On-vehicle Inspection

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-Toyota Prius 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
*1: Also necessary after performing a tire rotation. *2: It is not necessary to perform this procedure if the tire pressure warning valve and transmitters are installed to the same location. *3: The Toyota Prius vehicle height changes because of suspension or tire replacement.
Tires	Initialization*1*2 Tire Position Identification*1*2	Tire Pressure Warning System	Refer to Procedures Necessary When Replacing Parts (for Tire Pressure Warning System)
	Rear television camera assembly optical axis (Back camera position setting)*3	Parking Assist Monitor System
	Parking assist ECU initialization*3	Panoramic View Monitor System
		Advanced Park

HINT:

When the cable is disconnected / reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.

Learning completes when Toyota Prius vehicle is driven

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
Front Camera System	Drive the Toyota Prius vehicle straight ahead at 35 km/h (22 mph) or more for 5 second or more.

Learning completes when vehicle is operated normally

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
*1: w/o Power Back Door System *2: w/ Power Back Door System
Power Door Lock Control System*1 Back door opener	Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.
Power Back Door System*2	Reset back door close position
Air Conditioning System	for HEV Model: After the ignition switch is turned to ON, the servo motor standard position is recognized. for PHEV Model: After the ignition switch is turned to ON, the servo motor and expansion valve standard position is recognized.	-

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

PROCEDURE

1. PRECAUTION

2. DISABLE BRAKE CONTROL

HINT:

Click here

3. REMOVE REAR WHEEL

HINT:

Click here

4. DISCONNECT NO. 2 PARKING BRAKE WIRE ASSEMBLY

HINT:

Click here

5. SEPARATE REAR DISC BRAKE CALIPER ASSEMBLY

HINT:

Click here

6. REMOVE REAR DISC

HINT:

Click here

7. 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 and bearing assembly. 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. Rear Axle Hub Bearing Looseness Specified Condition Result 0.05 mm or less 0.00197 in. or less mm in.

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

8. INSPECT REAR AXLE HUB RUNOUT

(a) Using a dial indicator with magnetic base, check for runout on the surface of the rear axle hub and bearing assembly. 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. Rear Axle Hub Runout Specified Condition Result 0.05 mm or less 0.00197 in. or less mm in.

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

9. INSTALL REAR DISC

HINT:

Click here

10. INSTALL REAR DISC BRAKE CALIPER ASSEMBLY

HINT:

Click here

11. CONNECT NO. 2 PARKING BRAKE WIRE ASSEMBLY

HINT:

Click here

12. INSTALL REAR WHEEL

HINT:

Click here

13. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL

HINT:

Click here

14. INITIALIZATION AFTER RECONNECTING AUXILIARY BATTERY TERMINAL

HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

Removal

REMOVAL

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 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	Link
*1: Also necessary after performing a tire rotation. *2: It is not necessary to perform this procedure if the tire pressure warning valve and transmitters are installed to the same location. *3: The Toyota Prius vehicle height changes because of suspension or tire replacement.
Tires	Initialization*1*2 Tire Position Identification*1*2	Tire Pressure Warning System	Refer to Procedures Necessary When Replacing Parts (for Tire Pressure Warning System)
	Rear television camera assembly optical axis (Back camera position setting)*3	Parking Assist Monitor System
	Parking assist ECU initialization*3	Panoramic View Monitor System
		Advanced Park

HINT:

When the cable is disconnected / reconnected to the auxiliary battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.

Learning completes when Toyota Prius vehicle is driven

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
Front Camera System	Drive the Toyota Prius vehicle straight ahead at 35 km/h (22 mph) or more for 5 second or more.

Learning completes when vehicle is operated normally

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
*1: w/o Power Back Door System *2: w/ Power Back Door System
Power Door Lock Control System*1 Back door opener	Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.
Power Back Door System*2	Reset back door close position
Air Conditioning System	for HEV Model: After the ignition switch is turned to ON, the servo motor standard position is recognized. for PHEV Model: After the ignition switch is turned to ON, the servo motor and expansion valve standard position is recognized.	-

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

COMPONENTS (REMOVAL)

Procedure		Part Name Code
1	PRECAUTION	-		-	-
2	DISABLE BRAKE CONTROL	-		-	-
3	REAR WHEEL	-	-	-	-
4	NO. 2 PARKING BRAKE WIRE ASSEMBLY	890C0A		-	-
5	REAR DISC BRAKE CALIPER ASSEMBLY	-	-	-	-
6	REAR DISC	42431		-	-
7	REAR AXLE HUB AND BEARING ASSEMBLY	42450B	-	-	-

*1

REAR DISC BRAKE DUST COVER

-

-

PROCEDURE

1. PRECAUTION

NOTICE: After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal. (for HEV Model) Click here Make sure to read the precautions of the electric parking brake system before removing the rear brake assembly. Click here

2. DISABLE BRAKE CONTROL

Click here

3. REMOVE REAR WHEEL

Click here

4. DISCONNECT NO. 2 PARKING BRAKE WIRE ASSEMBLY

NOTICE: Remove any dirt or foreign matter on and around the No. 2 parking brake wire assembly connector before performing this step. Do not allow water, oil or dirt to enter the No. 2 parking brake wire assembly connector.

(1) Disconnect the No. 2 parking brake wire assembly connector from the parking brake actuator assembly.

(2) Using a screwdriver with its tip wrapped in protective tape, disconnect the No. 2 parking brake wire assembly connector from the rear axle hub and bearing assembly.

NOTICE:

Be careful not to damage the rear axle hub and bearing assembly and connector cover.

5. SEPARATE REAR DISC BRAKE CALIPER ASSEMBLY

Click here

6. REMOVE REAR DISC

Click here

7. REMOVE REAR AXLE HUB AND BEARING ASSEMBLY

Installation

INSTALLATION

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

COMPONENTS (INSTALLATION)

Procedure		Part Name Code
1	REAR AXLE HUB AND BEARING ASSEMBLY	42450B	-	-	-
2	REAR AXLE HUB BEARING LOOSENESS	-	-	-
3	REAR AXLE HUB RUNOUT	-	-	-
4	REAR DISC	42431		-	-
5	REAR DISC BRAKE CALIPER ASSEMBLY	-	-	-	-
6	NO. 2 PARKING BRAKE WIRE ASSEMBLY	890C0A		-	-
7	REAR WHEEL	-	-	-	-
8	CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL	-		-	-
9	INITIALIZATION AFTER RECONNECTING AUXILIARY BATTERY TERMINAL	-	-	-
10	CHECK FOR SPEED SENSOR SIGNAL	-	-	-

*1	REAR DISC BRAKE DUST COVER	-	-
	Tightening torque for "Major areas involving basic Toyota Prius vehicle performance such as moving/turning/stopping": N*m (kgf*cm, ft.*lbf)	-	-

PROCEDURE

1. INSTALL REAR AXLE HUB AND BEARING ASSEMBLY

Torque:

90 N·m {918 kgf·cm, 66 ft·lbf}

2. INSPECT REAR AXLE HUB BEARING LOOSENESS

Click here

3. INSPECT REAR AXLE HUB RUNOUT

Click here

4. INSTALL REAR DISC

Click here

5. INSTALL REAR DISC BRAKE CALIPER ASSEMBLY

Click here

6. CONNECT NO. 2 PARKING BRAKE WIRE ASSEMBLY

NOTICE: Remove any dirt or foreign matter on and around the No. 2 parking brake wire assembly connector before performing this step. Do not allow water, oil or dirt to enter the No. 2 parking brake wire assembly connector.

(1) Connect the No. 2 parking brake wire assembly connector to the parking brake actuator assembly.

(2) Connect the No. 2 parking brake wire assembly connector to the rear axle hub and bearing assembly.

7. INSTALL REAR WHEEL

Click here

8. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL

Click here

9. INITIALIZATION AFTER RECONNECTING AUXILIARY BATTERY TERMINAL

HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

10. CHECK FOR SPEED SENSOR SIGNAL

Click here