A25A-FXS (FUEL): FUEL INJECTOR (for Port Injection): INSTALLATION; 2019 - 2022 MY Avalon HV [04/2018

Last Modified: 08-21-2023	6.11:8.1.0	Doc ID: RM100000001B4LF
Model Year Start: 2019	Model: Avalon HV	Prod Date Range: [04/2018 - ]
Title: A25A-FXS (FUEL): FUEL INJECTOR (for Port Injection): INSTALLATION; 2019 - 2022 MY Avalon HV [04/2018 - ]

INSTALLATION

CAUTION / NOTICE / HINT

NOTICE:

This procedure includes the installation of small-head bolts. Refer to Small-Head Bolts of Basic Repair Hint to identify the small-head bolts.

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PROCEDURE

1. INSTALL PORT FUEL INJECTOR ASSEMBLY

HINT:

Perform "Inspection After Repair" after replacing a port fuel injector assembly.

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(a) Apply a light coat of spindle oil or gasoline to 4 new O-rings, and install one to each port fuel injector assembly.

NOTICE:

Check that there is no damage or foreign matter on the groove of the port fuel injector assembly when installing the O-ring to each port fuel injector assembly.

(b) Install the 4 port fuel injector assemblies to the fuel delivery pipe sub-assembly.

NOTICE:

Make sure that the port fuel injector assembly is located within the stopper as shown in the illustration.
Check that the port fuel injector assembly installation holes of the fuel delivery pipe sub-assembly are not damaged and are free of foreign matter.
Make sure that the O-ring is not damaged, twisted or moved out of place when installing the port fuel injector assembly.

*a	Stopper
*b	Claw

2. INSTALL NO. 5 ENGINE WIRE

(a) Engage the 2 clamps to install the No. 5 engine wire to the fuel delivery pipe sub-assembly.

(b) Connect the 4 port fuel injector assembly connectors and fuel pressure sensor connector.

3. INSTALL INJECTOR VIBRATION INSULATOR

(a) Install 4 new injector vibration insulators to the cylinder head sub-assembly.

4. INSTALL NO. 1 DELIVERY PIPE SPACER

(a) Install the 2 No. 1 delivery pipe spacers to the cylinder head sub-assembly.

NOTICE:

Install the No. 1 delivery pipe spacers in the correct direction.

*a	Fuel Delivery Pipe Sub-assembly Side
*b	Cylinder Head Sub-assembly Side

5. INSTALL FUEL DELIVERY PIPE SUB-ASSEMBLY

(a) Place the fuel delivery pipe sub-assembly with the 4 port fuel injector assemblies onto the cylinder head sub-assembly.

NOTICE:

Be careful not to drop the port fuel injector assemblies when installing the fuel delivery pipe sub-assembly.

(b) Install the fuel delivery pipe sub-assembly with the port fuel injector assemblies with the 2 bolts.

Torque:

28.5 N·m {291 kgf·cm, 21 ft·lbf}

6. TEMPORARILY INSTALL NO. 1 FUEL PIPE SUB-ASSEMBLY

NOTICE:

Do not damage the seals of the union nuts of the No. 1 fuel pipe sub-assembly.

(a) for Cylinder Head Cover Sub-assembly Connection Type:

(1) Temporarily install the bolt.

(b) Temporarily install the No. 1 fuel pipe sub-assembly to the fuel delivery pipe and tighten the union nut by hand.

7. INSTALL NO. 1 FUEL PIPE SUB-ASSEMBLY

(a) Tighten the 2 bolts.

Torque:

28.5 N·m {291 kgf·cm, 21 ft·lbf}

(b) for EGR Valve Bracket Connection Type:

(1) Using a 17 mm union nut wrench, tighten the union nut on the fuel delivery pipe side of the No. 1 fuel pipe sub-assembly.

Torque:

Specified tightening torque :

35 N·m {357 kgf·cm, 26 ft·lbf}

NOTICE:

Do not adjust the torque in the loosening direction.

HINT:

Calculate the torque wrench reading when changing the fulcrum length of the torque wrench.
Click here
When using a 17 mm union nut wrench (fulcrum length of 30 mm (1.18 in.)) + torque wrench (fulcrum length of 180 mm (7.09 in.)): 30 N*m (306 kgf*cm, 22 ft.*lbf)

*a	17 mm Union Nut Wrench
*b	Torque Wrench Fulcrum Length

(2) Using a 17 mm union nut wrench, tighten the union nut on the fuel pump assembly side of the No. 1 fuel pipe sub-assembly.

Torque:

Specified tightening torque :

35 N·m {357 kgf·cm, 26 ft·lbf}

NOTICE:

Do not adjust the torque in the loosening direction.

HINT:

Calculate the torque wrench reading when changing the fulcrum length of the torque wrench.
Click here
When using a 17 mm union nut wrench (fulcrum length of 30 mm (1.18 in.)) + torque wrench (fulcrum length of 180 mm (7.09 in.)): 30 N*m (306 kgf*cm, 22 ft.*lbf)

(1) Using a 17 mm union nut wrench, tighten the union nut on the fuel delivery pipe side of the No. 1 fuel pipe sub-assembly.

*a	17 mm Union Nut Wrench
*b	Torque Wrench Fulcrum Length
	Union Nut
	Bolt

Torque:

Specified tightening torque :

35 N·m {357 kgf·cm, 26 ft·lbf}

NOTICE:

Do not adjust the torque in the loosening direction.

HINT:

Calculate the torque wrench reading when changing the fulcrum length of the torque wrench.
Click here
When using a 17 mm union nut wrench (fulcrum length of 30 mm (1.18 in.)) + torque wrench (fulcrum length of 180 mm (7.09 in.)): 30 N*m (306 kgf*cm, 22 ft.*lbf)

(2) Using a 17 mm union nut wrench, tighten the union nut on the fuel pump assembly side of the No. 1 fuel pipe sub-assembly.

Torque:

Specified tightening torque :

35 N·m {357 kgf·cm, 26 ft·lbf}

NOTICE:

Do not adjust the torque in the loosening direction.

HINT:

Calculate the torque wrench reading when changing the fulcrum length of the torque wrench.
Click here
When using a 17 mm union nut wrench (fulcrum length of 30 mm (1.18 in.)) + torque wrench (fulcrum length of 180 mm (7.09 in.)): 30 N*m (306 kgf*cm, 22 ft.*lbf)

(3) Using an 8 mm socket wrench, tighten the bolt.

Torque:

10 N·m {102 kgf·cm, 7 ft·lbf}

(d) Connect the ignition coil assembly connector.

8. CONNECT FUEL TUBE SUB-ASSEMBLY

(a) Connect the fuel tube sub-assembly to the fuel delivery pipe sub-assembly.

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(b) Install the fuel pipe clamp to the fuel tube connector.

9. INSTALL NO. 2 WATER BY-PASS PIPE

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10. INSTALL EGR VALVE ASSEMBLY

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11. INSTALL THROTTLE BODY WITH MOTOR ASSEMBLY

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12. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL

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13. INSTALL LUGGAGE TRIM SERVICE HOLE COVER

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14. INSPECT FOR FUEL LEAK

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15. PERFORM INITIALIZATION

(a) Perform "Inspection After Repair" after replacing a port fuel injector assembly.

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