Toyota Avalon (XX50): Front Wiper Motor

Components

COMPONENTS

ILLUSTRATION

*1

COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY

*2

FRONT FENDER TO COWL SIDE SEAL LH

*3

FRONT FENDER TO COWL SIDE SEAL RH

*4

FRONT WIPER ARM AND BLADE ASSEMBLY LH

*5

FRONT WIPER ARM AND BLADE ASSEMBLY RH

*6

FRONT WIPER ARM HEAD CAP

*7

WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY

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-

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

-

-

ILLUSTRATION

*1

WINDSHIELD WIPER MOTOR ASSEMBLY

*2

WIPER LINK ASSEMBLY

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

MP grease

Inspection

INSPECTION

CAUTION / NOTICE / HINT

CAUTION:

Ensure that fingers or articles of clothing do not get caught in moving parts when performing this test.

PROCEDURE

1. INSPECT WINDSHIELD WIPER MOTOR ASSEMBLY

(a) Check the HI operation.

(1) Connect a positive (+) lead from the auxiliary battery to terminal 4 (+B) and a negative (-) lead to terminal 1 (GND) and 3 (2S), and check that the windshield wiper motor assembly operates.

OK:

Windshield wiper motor assembly operates at high speed (HI).

If the result is not as specified, replace the windshield wiper motor assembly.

*a

Component without harness connected

(Windshield Wiper Motor Assembly)

Installation

INSTALLATION

CAUTION / NOTICE / HINT

NOTICE:

Make sure to hold the front wiper arm while lifting it as lifting the front wiper arm by the front wiper blade may damage or deform the front wiper blade.

PROCEDURE

1. INSTALL WINDSHIELD WIPER MOTOR ASSEMBLY

(a) Using a T30 "TORX" socket wrench, install the windshield wiper motor assembly to the wiper link assembly with the 2 bolts.

Torque:

7.5 N·m {76 kgf·cm, 66 in·lbf}

(b) Apply MP grease to the pivot of the windshield wiper motor assembly.

*a

Pivot of Windshield Wiper Motor Assembly

(c) Connect the No. 1 wiper link rod to the pivot of the windshield wiper motor assembly.

*1

No. 1 Wiper Link Rod

*a

Pivot of Windshield Wiper Motor Assembly

2. INSTALL WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY

(a) Engage the motor grommet as shown in the illustration.

NOTICE:

Be careful not to damage the windshield glass when installing the windshield wiper motor and link assembly.

*a

Motor Grommet

(b) Install the windshield wiper motor and link assembly with the 2 bolts.

Torque:

7.5 N·m {76 kgf·cm, 66 in·lbf}

HINT:

Tighten the bolts in the order shown in the illustration.

(c) Connect the connector.

(d) Engage the 2 clamps.

3. INSTALL COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY

(a) Insert the cowl top ventilator louver sub-assembly from the front passenger side as shown in the illustration.

*a

Vehicle Body

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-

Install in this Direction

-

-

NOTICE:

Make sure that the cowl top ventilator louver sub-assembly does not contact the vehicle body, otherwise it may be damaged.

(b) While pushing the washer hose assembly in the direction indicated by the arrow (A), push the passenger side of the cowl top ventilator louver sub-assembly in the direction indicated by the arrow (B), to position it as shown in the illustration.

Install in this Direction (A)

Install in this Direction (B)

(c) Engage the guide.

*a

Guide

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-

Install in this Direction

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-

NOTICE:

Make sure to engage the guides securely, otherwise the cowl top ventilator louver sub-assembly may pop up when engaging it to the windshield glass.

(d) Engage the cowl top ventilator louver sub-assembly to the windshield glass as shown in the illustration.

(e) Engage the 4 claws as shown in the illustration.

Install in this Direction

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-

(f) Install the cowl top ventilator louver sub-assembly with the 2 clips.

4. INSTALL FRONT WIPER ARM AND BLADE ASSEMBLY RH

(a) When reusing the front wiper arm and blade assembly RH:

(1) Clean the wiper arm serrations to remove any burrs, dirt, etc.

NOTICE:

Do not grind down the wiper arm serrations.

*a

Serration

(b) When reusing the windshield wiper motor and link assembly:

(1) Clean the wiper pivot serrations with a wire brush.

(c) Turn the engine switch (for Gasoline Model) or power switch (for HV Model) on (IG).

(d) Operate the windshield wiper motor assembly and stop the windshield wiper motor and link assembly at the automatic stop position.

(e) Turn the engine switch (for Gasoline Model) or power switch (for HV Model) off.

(f) Install the front wiper arm and blade assembly RH with the nut to the position shown in the illustration.

Torque:

24 N·m {245 kgf·cm, 18 ft·lbf}

HINT:

Hold the wiper arm by hand while tightening the nut.

Reference Measurement:

Area

Measurement

A

7.5 mm (0.295 in.)

*a

Alignment Mark

5. INSTALL FRONT WIPER ARM AND BLADE ASSEMBLY LH

(a) When reusing the front wiper arm and blade assembly LH:

(1) Clean the wiper arm serrations to remove any burrs, dirt, etc.

NOTICE:

Do not grind down the wiper arm serrations.

*a

Serration

(b) When reusing the windshield wiper motor and link assembly:

(1) Clean the wiper pivot serrations with a wire brush.

(c) Install the front wiper arm and blade assembly LH with the nut to the position shown in the illustration.

Torque:

24 N·m {245 kgf·cm, 18 ft·lbf}

HINT:

Hold the wiper arm by hand while tightening the nut.

Reference Measurement:

Area

Measurement

A

7.5 mm (0.295 in.)

*a

Alignment Mark

(d) Turn the engine switch (for Gasoline Model) or power switch (for HV Model) on (IG).

(e) Operate the windshield wipers while spraying washer fluid onto the windshield glass. Make sure that the windshield wipers function properly and the wipers do not contact the vehicle body.

(f) Turn the engine switch (for Gasoline Model) or power switch (for HV Model) off.

(g) Lift each wiper arm twice after the wipers stop and check the wiper set position.

6. INSTALL FRONT FENDER TO COWL SIDE SEAL LH

(a) Engage the 2 guides and 3 claws to install the front fender to cowl side seal LH.

7. INSTALL FRONT FENDER TO COWL SIDE SEAL RH

(a) Engage the 2 guides and 3 claws to install the front fender to cowl side seal RH.

8. INSTALL FRONT WIPER ARM HEAD CAP

(a) Engage the 3 claws to install the front wiper arm head cap.

HINT:

Use the same procedure for the RH side and LH side.

On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT WINDSHIELD WIPER MOTOR ASSEMBLY

(a) for RH Side:

(1) Operate the windshield wiper motor assembly.

(2) Stop the windshield wiper motor assembly operation.

(3) Check the automatic stop (park) position.

HINT:

After the front wiper motor is stopped, check the automatic stop position after lifting the wiper blade 2 times.

Standard Clearance:

Area

Measurement

A

7.5 mm (0.295 in.)

OK:

The front wiper stops at the position shown in the illustration.

*a

Alignment Mark

(b) for LH Side:

(1) Operate the windshield wiper motor assembly.

(2) Stop the windshield wiper motor assembly operation.

(3) Check the automatic stop (park) position.

HINT:

After the front wiper motor is stopped, check the automatic stop position after lifting the wiper blade 2 times.

Standard Clearance:

Area

Measurement

A

7.5 mm (0.295 in.)

OK:

The front wiper stops at the position shown in the illustration.

*a

Alignment Mark

Removal

REMOVAL

CAUTION / NOTICE / HINT

NOTICE:

Make sure to hold the front wiper arm while lifting it as lifting the front wiper arm by the front wiper blade may damage or deform the front wiper blade.

PROCEDURE

1. REMOVE FRONT WIPER ARM HEAD CAP

(a) Using a screwdriver with its tip wrapped with protective tape, disengage the 3 claws to remove the front wiper arm head cap.

HINT:

Use the same procedure for the RH side and LH side.

*a

Protective Tape

2. REMOVE FRONT WIPER ARM AND BLADE ASSEMBLY LH

(a) Remove the nut and front wiper arm and blade assembly LH.

3. REMOVE FRONT WIPER ARM AND BLADE ASSEMBLY RH

(a) Remove the nut and front wiper arm and blade assembly RH.

4. REMOVE FRONT FENDER TO COWL SIDE SEAL LH

(a) Disengage the 3 claws and 2 guides to remove the front fender to cowl side seal LH.

5. REMOVE FRONT FENDER TO COWL SIDE SEAL RH

(a) Disengage the 3 claws and 2 guides to remove the front fender to cowl side seal RH.

6. REMOVE COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY

NOTICE:

To prevent damage to the windshield glass, remove any foreign matter (sand, dust, etc.) from around the contacting surfaces of the cowl top ventilator louver sub-assembly and windshield glass.

(a) Remove the 2 clips.

(b) Close the hood sub-assembly.

(c) Insert a moulding remover at the starting position, as far as it can be inserted, to lift the cowl top ventilator louver sub-assembly and then hold it as shown in the illustration.

*a

Starting Position:

Side of Cowl Top Ventilator Louver Sub-assembly and Moulding Remover Aligned

*b

Inserted Far as Possible

Place Hand Here

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-

(d) Apply protective tape to a moulding remover as shown in the illustration.

*a

Edge of Protective Tape

Protective Tape

Standard Dimension:

Area

Dimension

A

4.0 mm (0.157 in.)

(e) Insert the moulding remover at the starting position until the edge of the protective tape is aligned with the cowl top ventilator louver sub-assembly as shown in the illustration.

*a

Starting Position:

Side of Cowl Top Ventilator Louver Sub-assembly and Moulding Remover Aligned

*b

Inserted to Edge of Protective Tape

*c

Not Inserted at Starting Position

*d

Not Inserted to Edge of Protective Tape

*e

Not Inserted Straight

*f

Piece of Cloth or Equivalent

Protective Tape

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-

NOTICE:

  • To prevent damage to the windshield glass, set a piece of cloth between the moulding remover and windshield glass.
  • Make sure to insert the moulding remover until the edge of protective tape is aligned with the cowl top ventilator louver sub-assembly, otherwise the cowl top ventilator louver sub-assembly may be deformed or damaged.

(f) While pushing the moulding remover in the direction indicated by the arrow (A), push the moulding remover in the direction indicated by the arrow (B) to disengage the cowl top ventilator louver sub-assembly.

Push in this Direction (A)

Push in this Direction (B)

NOTICE:

  • Make sure to repeat this procedure to disengage the entire cowl top ventilator louver sub-assembly.
  • Make sure to perform this procedure while pushing the moulding remover in the direction indicated by the arrow (A), otherwise the cowl top ventilator louver sub-assembly may be deformed or damaged.
  • Make sure not to pry the cowl top ventilator louver sub-assembly more than necessary to disengage it, otherwise it may be deformed or damaged.

    *a

    Pried Until Disengaged

    *b

    Pried Excessively

(g) Using the moulding remover, repeatedly pry up the cowl top ventilator louver sub-assembly while gradually moving the moulding remover half of its width laterally toward the center of the vehicle and then repeat the procedure from the other side of the vehicle as shown in the illustration to disengage the cowl top ventilator louver sub-assembly from the windshield glass.

*a

Half Width of Moulding Remover

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-

Order of Removal

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-

NOTICE:

  • Make sure to move the moulding remover only half of its width laterally after prying up the cowl top ventilator louver sub-assembly, otherwise the cowl top ventilator louver sub-assembly may be damaged or deformed.
  • Make sure not to lift up or pull the cowl top ventilator louver sub-assembly by hand before it is completely disengaged, otherwise it may be deformed or damaged.

(h) Open the hood sub-assembly.

(i) Disengage the 4 claws and guide as shown in the illustration.

Remove in this Direction

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-

(j) Pull the passenger side of the cowl top ventilator louver sub-assembly as shown in the illustration.

Remove in this Direction

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-

(k) Lift the front of the cowl top ventilator louver sub-assembly as shown in the illustration.

*a

Vehicle Body

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-

Remove in this Direction

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-

NOTICE:

Make sure that the cowl top ventilator louver sub-assembly does not contact the vehicle body, otherwise it may be damaged.

(l) Remove the cowl top ventilator louver sub-assembly as shown in the illustration.

Remove in this Direction

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-

7. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY

(a) Disengage the 2 clamps.

(b) Disconnect the connector.

(c) Remove the bolt (A).

*a

Motor Grommet

Bolt (A)

Bolt (B)

(d) Remove the bolt (B).

HINT:

Remove the bolt (B) and windshield wiper motor and link assembly as a set.

(e) Disengage the motor grommet as shown in the illustration and remove the windshield wiper motor and link assembly.

NOTICE:

Be careful not to damage the windshield glass when removing the windshield wiper motor and link assembly.

8. REMOVE WINDSHIELD WIPER MOTOR ASSEMBLY

(a) Using a screwdriver with its tip wrapped with protective tape, separate the No. 1 wiper link rod from the pivot of the windshield wiper motor assembly as shown in the illustration.

*1

No. 1 Wiper Link Rod

*a

Protective Tape

*b

Pivot of Windshield Wiper Motor Assembly

(b) Using a T30 "TORX" socket wrench, remove the 2 bolts and windshield wiper motor assembly from the wiper link assembly.

Windshield Glass

Front Wiper Rubber

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