Toyota Avalon (XX50): Water Pump

Components

COMPONENTS

ILLUSTRATION

*1

ENGINE WATER PUMP ASSEMBLY

*2

NO. 2 IDLER PULLEY SUB-ASSEMBLY

*3

WATER PUMP PULLEY

*4

WATER PUMP GASKET

*5

V-RIBBED BELT

-

-

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

Non-reusable part

Do not apply lubricants to the threaded parts

-

-

Installation

INSTALLATION

PROCEDURE

1. INSTALL ENGINE WATER PUMP ASSEMBLY

(a) Install a new water pump gasket and the engine water pump assembly with the 15 bolts.

Torque:

Bolt (A) :

43 N·m {438 kgf·cm, 32 ft·lbf}

Bolt (B) :

21 N·m {214 kgf·cm, 15 ft·lbf}

Bolt (C) :

11 N·m {112 kgf·cm, 8 ft·lbf}

Standard Length:

Item

Length

Bolt (A)

60 mm (2.36 in.)

Bolt (B)

55 mm (2.17 in.)

Bolt (C)

22 mm (0.866 in.)

NOTICE:

  • Make sure that there is no oil on the threads of the bolts (A) and (B).
  • Do not start the engine for at least 1 hour after installation.

2. INSTALL WATER PUMP PULLEY

(a) Temporarily install the water pump pulley with the 4 bolts.

(b) Using SST, hold the water pump pulley.

SST: 09960-10010

09962-01000

09963-00700

(c) Fully tighten the 4 bolts.

Torque:

21 N·m {214 kgf·cm, 15 ft·lbf}

3. INSTALL NO. 2 IDLER PULLEY SUB-ASSEMBLY

(a) Install the No. 2 idler pulley sub-assembly with the bolt.

Torque:

54 N·m {551 kgf·cm, 40 ft·lbf}

4. INSTALL V-RIBBED BELT

Click here

5. INSTALL WATER INLET WITH THERMOSTAT SUB-ASSEMBLY

Click here

On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT FOR COOLANT LEAK

HINT:

  • The sliding surface inside the engine water pump assembly is lubricated by engine coolant. As some engine coolant is discharged during normal operation, engine coolant residue (solids) may be found on the drain plug or the bottom of the engine water pump assembly. Also, engine coolant may leak if foreign matter enters the engine water pump assembly, however the sealing performance will recover when the foreign matter is pushed out or breaks into fine pieces. In this case, check the area around the engine water pump assembly.
  • Before performing this inspection, check that there are no engine coolant leaks from any parts other than the engine water pump assembly. If there are leaks, inspect those areas first.
  • Perform this inspection when the engine is cold.

(a) Visually check the engine water pump assembly.

(1) Check that engine coolant is not dripping from the engine water pump assembly.

HINT:

  • If engine coolant is dripping, replace the engine water pump assembly.
  • If engine coolant is not dripping, perform the following check.

(b) Remove the V-ribbed belt.

Click here

(c) Remove the water pump pulley.

Click here

HINT:

Move the water pump pulley so that the drain plug can be reached.

(d) Inspect the area around the engine water pump assembly.

HINT:

Check for deposits around the drain plug of the engine water pump assembly.

(1) Press a piece of paper towel against the drain plug and check that the paper towel is not wet and that there are no deposits on the lip of the drain plug.

If the paper towel is wet, replace the engine water pump assembly.

If the paper towel is not wet, thoroughly clean the area around the engine water pump assembly.

*a

Drain Plug

(e) Install the water pump pulley.

Click here

2. INSPECT ENGINE WATER PUMP ASSEMBLY

(a) Turn the water pump pulley and check that the bearing of the engine water pump assembly moves smoothly and quietly.

If necessary, replace the engine water pump assembly.

(b) Install the V-ribbed belt.

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 engine water pump assembly removal/installation are shown below.

Necessary Procedure After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link

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*1

Lighting System (for Gasoline Model with Cornering Light)

Memorize steering angle neutral point

Parking Assist Monitor System

Panoramic View Monitor System

Replacement of ECM

Vehicle Identification Number (VIN) registration

MIL comes on

ECU communication ID registration (Immobiliser system)

Engine start function

  • Replacement of engine assembly
  • Gas leak from exhaust system is repaired

Inspection after repair

  • Poor idle, etc.
  • Engine start function, etc.

Replacement of automatic transaxle assembly

  • Perform reset memory
  • Input transaxle compensation code into ECM
  • Perform road test to allow ECM to learn
  • Large shift shock
  • Deterioration of fuel efficiency

for Initialization

for Registration

Replacement of ECM

(If transaxle compensation code read from ECM)

  • Perform reset memory*2
  • Transfer transaxle compensation code
  • Perform road test to allow ECM to learn

Replacement of ECM

(If transaxle compensation code not read from ECM)

  • Perform reset memory*2
  • Reset transaxle compensation code
  • Perform road test to allow ECM to learn

Replacement of automatic transaxle fluid

ATF thermal degradation estimate reset

The value of the Data List item "ATF Thermal Degradation Estimate" is not estimated correctly

Replacement of ECM

Code registration (Smart Key System (for Start Function))

  • Wireless Door Lock Control System
  • Smart Key System (for Entry Function)
  • Smart Key System (for Start Function)
  • Steering lock function

Suspension, tires, etc.

  • Measure ultrasonic sensor detection angle
  • Ultrasonic sensor detection angle registration
  • Intelligent Clearance Sonar System
  • Intuitive Parking Assist System

Rear television camera assembly optical axis adjustment (Back camera position setting)

Parking Assist Monitor System

for Initialization

for Calibration

  • Parking assist ECU initialization
  • Adjust steering angle
  • Television camera assembly optical axis adjustment (Back camera position setting)

Panoramic View Monitor System

for Initialization

for Calibration

Perform headlight ECU sub-assembly LH initialization

Lighting system (for Gasoline Model with Cornering Light)

Front wheel alignment adjustment

Perform system variant learning and acceleration sensor zero point calibration.

  • VSC is disabled or malfunctions
  • DTCs are output
  • Slip indicator light illuminates
  • ABS warning light illuminates

  • *1: When performing learning using the Techstream.

    Click here

  • *2: Not necessary when ECM replaced with new one.

PROCEDURE

1. REMOVE WATER INLET WITH THERMOSTAT SUB-ASSEMBLY

Click here

2. REMOVE V-RIBBED BELT

Click here

3. REMOVE NO. 2 IDLER PULLEY SUB-ASSEMBLY

(a) Remove the bolt and No. 2 idler pulley sub-assembly.

4. REMOVE WATER PUMP PULLEY

(a) Using SST, hold the water pump pulley.

SST: 09960-10010

09962-01000

09963-00700

(b) Remove the 4 bolts and water pump pulley.

5. REMOVE ENGINE WATER PUMP ASSEMBLY

(a) Remove the 15 bolts, engine water pump assembly and water pump gasket.

Thermostat

Canister

See More:

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > A25a-fxs (emission Control): Purge Valve
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual

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