Toyota Avalon (XX50): Generator

Components

COMPONENTS

ILLUSTRATION

*1

GENERATOR ASSEMBLY

*2

WIRE HARNESS CLAMP BRACKET

*3

GENERATOR ASSEMBLY BRACKET

*4

V-BANK COVER SUB-ASSEMBLY

Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping": N*m (kgf*cm, ft.*lbf)

N*m (kgf*cm, ft.*lbf): Specified torque

ILLUSTRATION

*1

GENERATOR BRUSH HOLDER ASSEMBLY

*2

GENERATOR COIL ASSEMBLY

*3

GENERATOR DRIVE END FRAME BEARING

*4

GENERATOR PULLEY WITH CLUTCH

*5

GENERATOR REAR END COVER

*6

GENERATOR ROTOR ASSEMBLY

*7

GENERATOR TERMINAL INSULATOR

*8

GENERATOR DRIVE END FRAME

*9

RETAINER PLATE

*10

BEARING COVER PACKING

*11

GENERATOR PULLEY CAP

-

-

N*m (kgf*cm, ft.*lbf) : Specified torque

*

For use with SST

Non-reusable part

-

-

Disassembly

DISASSEMBLY

PROCEDURE

1. REMOVE GENERATOR PULLEY CAP

(a) Using a screwdriver, remove the generator pulley cap from the generator pulley with clutch.

NOTICE:

Do not reuse the generator pulley cap.

2. REMOVE GENERATOR REAR END COVER

(a) Remove the 3 bolts and generator rear end cover from the generator coil assembly.

3. REMOVE GENERATOR TERMINAL INSULATOR

(a) Remove the generator terminal insulator from the generator coil assembly.

4. REMOVE GENERATOR BRUSH HOLDER ASSEMBLY

(a) Remove the 2 screws and generator brush holder assembly from the generator coil assembly.

5. REMOVE GENERATOR COIL ASSEMBLY

(a) Remove the 4 bolts.

(b) Using SST, remove the generator coil assembly from the generator rotor assembly.

SST: 09950-40011

09951-04020

09952-04010

09953-04020

09954-04010

09955-04071

09957-04010

09958-04011

*a

Turn

*b

Hold

(c) Remove the bearing cover packing.

NOTICE:

If the bearing cover packing breaks, remove the broken pieces completely.

HINT:

The bearing cover packing may be installed on the generator rotor assembly.

6. REMOVE GENERATOR PULLEY WITH CLUTCH

(a) Secure the generator drive end frame in a vise between aluminum plates.

(b) Install SST (A) and (B) to the generator pulley with clutch as shown in the illustration.

SST: 09820-63021

NOTICE:

Securely attach SST to the generator pulley with clutch and rotor shaft.

*a

Rotor Shaft

(c) Loosen the generator pulley with clutch by turning SST (B) as shown in the illustration.

NOTICE:

  • Check that the generator drive end frame is secured in the vise tightly.
  • Hold SST (A) tightly during the operation.

*a

Turn

*b

Hold

(d) Remove SST from the generator pulley with clutch.

(e) Remove the generator pulley with clutch from the rotor shaft.

7. REMOVE GENERATOR ROTOR ASSEMBLY

(a) Remove the generator rotor assembly from the generator drive end frame.

8. INSPECT GENERATOR DRIVE END FRAME BEARING

Click here

9. REMOVE GENERATOR DRIVE END FRAME BEARING

(a) Remove the 4 screws and retainer plate from the generator drive end frame.

(b) Using SST and a hammer, tap out the generator drive end frame bearing from the generator drive end frame.

SST: 09950-60010

09951-00250

SST: 09950-70010

09951-07100

Inspection

INSPECTION

PROCEDURE

1. INSPECT GENERATOR PULLEY WITH CLUTCH

(a) Hold the center of the generator pulley with clutch, and confirm that the outer ring turns counterclockwise and does not turn clockwise.

OK:

The outer ring turns counterclockwise and does not turn clockwise.

If the result is not as specified, replace the generator pulley with clutch.

Free

Lock

2. INSPECT GENERATOR BRUSH HOLDER ASSEMBLY

(a) Using a vernier caliper, measure the length of the exposed brushes.

Standard Exposed Brush Length:

9.5 to 11.5 mm (0.374 to 0.453 in.)

Minimum Exposed Brush Length:

4.5 mm (0.177 in.)

If the brush length is less than the minimum, replace the generator brush holder assembly.

*a

Length

3. INSPECT GENERATOR ROTOR ASSEMBLY

(a) Check the generator rotor assembly for an open circuit.

(1) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

Slip ring - Slip ring

20°C (68°F)

1.8 to 2.2 Ω (for 100A Type)

1.6 to 2.0 Ω (for 130A Type)

If the result is not as specified, replace the generator rotor assembly.

*a

Slip Ring

(b) Check the generator rotor assembly for a short to ground.

(1) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

Slip ring - Rotor

Always

1 MΩ or higher

If the result is not as specified, replace the generator rotor assembly.

*a

Slip Ring

*b

Rotor

(c) Check that the generator rotor bearing is not rough or worn and that it rotates smoothly.

If the generator rotor bearing is rough or worn, or does not rotate smoothly, replace the generator rotor assembly.

(d) Check the slip ring.

(1) Check that the slip rings are not rough or scored.

If the slip rings are rough or scored, replace the generator rotor assembly.

(2) Using a vernier caliper, measure the slip ring diameter.

Standard Diameter:

14.2 to 14.8 mm (0.559 to 0.583 in.)

Minimum Diameter:

14.0 mm (0.551 in.)

If the diameter is less than the minimum, replace the generator rotor assembly.

*a

Diameter

4. INSPECT GENERATOR DRIVE END FRAME BEARING

(a) Check that the generator drive end frame bearing is not rough or worn and that it rotates smoothly.

If the generator drive end frame bearing is rough or worn, or does not rotate smoothly, replace the generator drive end frame bearing.

Installation

INSTALLATION

PROCEDURE

1. INSTALL GENERATOR ASSEMBLY

(a) Install the generator assembly with the 2 bolts.

Torque:

43 N·m {438 kgf·cm, 32 ft·lbf}

(b) Install the generator assembly bracket with the 2 bolts in the order shown in the illustration.

Torque:

20 N·m {204 kgf·cm, 15 ft·lbf}

(c) Install the wire harness clamp bracket with the 2 bolts.

Torque:

10 N·m {102 kgf·cm, 7 ft·lbf}

(d) Engage the 3 wire harness clamps.

(e) Connect the camshaft timing oil control solenoid assembly connector.

(f) Connect the compressor assembly with magnetic clutch connector.

(g) Connect the generator assembly connector.

(h) Connect the wire harness to terminal B with the nut.

Torque:

9.8 N·m {100 kgf·cm, 87 in·lbf}

(i) Close the terminal cap.

2. INSTALL V-RIBBED BELT

Click here

3. INSTALL V-BANK COVER SUB-ASSEMBLY

Click here

4. INSTALL RADIATOR ASSEMBLY

Click here

5. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL

NOTICE:

When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

Click here

Reassembly

REASSEMBLY

PROCEDURE

1. INSTALL GENERATOR DRIVE END FRAME BEARING

(a) Using SST and a press, install a new generator drive end frame bearing to the generator drive end frame.

SST: 09950-60010

09951-00470

SST: 09950-70010

09951-07100

(b) Fit the tabs of the retainer plate into the cutouts of the generator drive end frame to install the retainer plate.

*a

Tab

*b

Cutout

(c) Install the 4 screws.

Torque:

2.3 N·m {23 kgf·cm, 20 in·lbf}

2. INSTALL GENERATOR ROTOR ASSEMBLY

(a) Place the generator drive end frame on the generator pulley with clutch.

(b) Install the generator rotor assembly to the generator drive end frame.

*1

Generator Rotor Assembly

*2

Generator Drive End Frame

3. INSTALL GENERATOR PULLEY WITH CLUTCH

(a) Temporarily install the generator pulley with clutch to the rotor shaft.

(b) Secure the generator drive end frame in a vise between aluminum plates.

(c) Place the rotor shaft end into SST (A).

SST: 09820-63021

*a

Rotor Shaft

(d) Fit SST (B) to the generator pulley with clutch.

(e) Tighten the generator pulley with clutch by turning SST (B) as shown in the illustration.

Torque:

Specified tightening torque :

80 N·m {816 kgf·cm, 59 ft·lbf}

HINT:

  • Calculate the torque wrench reading when changing the fulcrum length of the torque wrench.

    Click here

  • When using SST (fulcrum length of 100 mm (3.94 in.)) + torque wrench (fulcrum length of 400 mm (1.312 ft.)): 64 N*m (653 kgf*cm, 47 ft.*lbf)

*a

Hold

*b

Turn

*c

Length of SST 100 mm (3.94 in.)

*d

Length of Torque Wrench 400 mm (1.31 ft.)

(f) Remove SST (A) and (B) from the generator pulley with clutch.

(g) Check that the generator pulley with clutch rotates smoothly.

(h) Remove the generator drive end frame from the vise.

4. INSTALL GENERATOR COIL ASSEMBLY

(a) Install a new bearing cover packing.

NOTICE:

Align the protrusions of the bearing cover packing with the grooves of the generator coil assembly when installing.

*a

Protrusion

*b

Groove

(b) Using a 21 mm socket wrench and press, slowly press the generator coil assembly to install it.

*a

21 mm Socket Wrench

(c) Install the 4 bolts.

Torque:

5.6 N·m {57 kgf·cm, 50 in·lbf}

5. INSTALL GENERATOR BRUSH HOLDER ASSEMBLY

(a) While pushing the 2 brushes into the generator brush holder assembly, insert a 1.0 mm (0.0394 in.) pin into the generator brush holder assembly hole.

*a

Pin (1.0 mm)

(b) Install the generator brush holder assembly to the generator coil assembly with the 2 screws.

*a

Pin (1.0 mm)

Pull out

Torque:

1.8 N·m {18 kgf·cm, 16 in·lbf}

(c) Pull out the pin from the generator brush holder assembly hole.

6. INSTALL GENERATOR TERMINAL INSULATOR

(a) Install the generator terminal insulator to the generator coil assembly.

NOTICE:

Be sure to install the generator terminal insulator in the correct direction.

7. INSTALL GENERATOR REAR END COVER

(a) Install the generator rear end cover to the generator coil assembly with the 3 bolts.

Torque:

4.6 N·m {47 kgf·cm, 41 in·lbf}

8. INSTALL GENERATOR PULLEY CAP

(a) Install a new generator pulley cap to the generator pulley with clutch.

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 generator 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

*: When performing learning using the Techstream.

Click here

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 Gasoline Model with Cornering Light)

Memorize steering angle neutral point

Parking assist monitor system

Panoramic view monitor system

Front bumper assembly (w/ Panoramic view monitor system)

Front television camera view adjustment

Panoramic view monitor system

for Initialization

for Calibration

Front bumper assembly (w/ Intuitive Parking Assist System)

  • Measure ultrasonic sensor detection angle
  • Ultrasonic sensor detection angle registration
  • Intelligent clearance sonar system
  • Intuitive parking assist system

PROCEDURE

1. PRECAUTION

NOTICE:

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

Click here

2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

NOTICE:

When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

Click here

3. REMOVE RADIATOR ASSEMBLY

Click here

4. REMOVE V-BANK COVER SUB-ASSEMBLY

Click here

5. REMOVE V-RIBBED BELT

Click here

6. REMOVE GENERATOR ASSEMBLY

(a) Open the terminal cap.

(b) Remove the nut and disconnect the wire harness from terminal B.

(c) Remove the 2 bolts.

(d) Disconnect the generator assembly connector.

(e) Disconnect the compressor assembly with magnetic clutch connector.

(f) Disconnect the camshaft timing oil control solenoid assembly connector.

(g) Disengage the 3 wire harness clamps and remove the wire harness clamp bracket.

(h) Remove the 2 bolts and generator assembly bracket.

(i) Remove the 2 bolts and generator assembly.

Charging System

Can Communication System(for Gasoline Model)

See More:

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

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