Lexus ES: Installation

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 FUEL INJECTOR SEAL

(a) Apply engine conditioner to the area shown in the illustration. Using a piece of cloth, clean carbon deposits from the direct fuel injector assembly and its grooves. NOTICE: Do not clean the tip of the direct fuel injector assembly. Do not use a wire brush to clean the direct fuel injector assembly. If a direct fuel injector assembly is dropped or the tip of the direct fuel injector assembly is struck, replace it with a new one.

*a Area to be Cleaned

(b) Apply engine oil to the direct fuel injector assembly contact surface of SST (guide), then attach SST (guide) to the direct fuel injector assembly with the chamfer facing the tip of the direct fuel injector assembly as shown in the illustration. SST: 09260-39030 09261-03030

*a SST (Guide) *b Chamfer

(c) Install a new fuel injector seal to SST (holder). SST: 09260-39030 09261-03011 NOTICE: Be careful not to install the fuel injector seal to SST (holder) at an angle. Doing so will stretch the fuel injector seal.

*1 Fuel Injector Seal *a SST (Holder) *b Correct *c Incorrect

(d) Install SST (holder) with the fuel injector seal to the tip of the direct fuel injector assembly. Slide the fuel injector seal downward into the direct fuel injector assembly groove with your fingers as shown in the illustration. SST: 09260-39030 09261-03011 09261-03030 HINT: Check that the fuel injector seal is seated in the direct fuel injector assembly groove as shown in the illustration.

*a SST (Holder) *b SST (Guide)

(e) Slowly slide SST (guide) toward the tip of the direct fuel injector assembly. When the direct fuel injector assembly contact surface of SST (guide) aligns with the fuel injector seal as shown in the illustration, hold the position for 10 seconds or more to fully seat the fuel injector seal into the direct fuel injector assembly groove. SST: 09260-39030 09261-03030 NOTICE: Make sure the fuel injector seal is not pinched between SST (guide) and the edge of the direct fuel injector assembly groove. Replace the fuel injector seal if it becomes damaged. HINT: Set SST (guide) so that its bottom surface is flush with the fuel injector seal. If it is difficult to slide SST (guide) upward, slowly wiggle it from side to side while sliding it up the direct fuel injector assembly little by little.

*a SST (Guide)

(f) After installing the fuel injector seals, check that they are not scratched, deformed or protruding from the direct fuel injector assembly groove. NOTICE: If a fuel injector seal is scratched, deformed or protruding from the groove, replace it with a new one. HINT: Use the same procedure to install the other fuel injector seals.

*a Normal *b Protruding *c Deformed *d Correct *e Incorrect

2. INSTALL DIRECT FUEL INJECTOR ASSEMBLY

HINT:

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

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(a) Install a new injector vibration insulator and a new C-ring to each direct fuel injector assembly. NOTICE: Install the taper of the injector vibration insulator by aligning it with the taper of the direct fuel injector assembly. Check that the C-ring is securely seated in the groove of the direct fuel injector assembly.

*1 Direct Fuel Injector Assembly *2 C-ring *3 Injector Vibration Insulator *a Taper

(b) Install a new O-ring and No. 1 fuel injector back-up ring to each direct fuel injector assembly as shown in the illustration.

(c) With the notch of a new No. 3 fuel injector back-up ring facing downward, install the No. 3 fuel injector back-up ring to each direct fuel injector assembly as shown in the illustration. NOTICE: Make sure that the No. 3 fuel injector back-up ring is installed in the correct orientation. After installing the No. 3 fuel injector back-up ring, make sure there is no damage or foreign matter.

*1 Direct Fuel Injector Assembly *2 No. 3 Fuel Injector Back-up Ring *a Notch

(d) Install the nozzle holder clamp to each direct fuel injector assembly.

(e) Align the protrusion of the nozzle holder clamp with the positioning hole of the fuel delivery pipe and insert the direct fuel injector assembly.

*a	Protrusion
*b	Positioning Hole
	No Gap

3. INSTALL FUEL DELIVERY PIPE

NOTICE:

When replacing the fuel delivery pipe, it is necessary to replace the No. 1 fuel pipe sub-assembly with a new one.

(a) Apply lubricant to the direct fuel injector assembly installation holes of the cylinder head sub-assembly.

(b) Temporarily install the fuel delivery pipe to the cylinder head sub-assembly.

(c) Temporarily install the 2 bolts in the order shown in the illustration.

(d) Install the fuel delivery pipe by uniformly tightening the 4 bolts in the order shown in the illustration. Torque: 28.5 N·m {291 kgf·cm, 21 ft·lbf}

(e) Connect the 4 direct fuel injector assembly connectors.

(f) Engage the clamp to connect the sensor wire to the fuel delivery pipe.

(g) Connect the fuel pressure sensor connector.

4. TEMPORARILY INSTALL FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY

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5. 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.

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

6. INSTALL FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY

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7. INSTALL NO. 1 FUEL PIPE SUB-ASSEMBLY

(a) 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.

(b) for Cylinder Head Cover Sub-assembly 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.

*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.

(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.

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

Torque:

10 N·m {102 kgf·cm, 7 ft·lbf}

(c) Connect the ignition coil connector.

8. CONNECT FUEL TUBE SUB-ASSEMBLY

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

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

9. INSTALL INTAKE MANIFOLD

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10. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL

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11. INSPECT FOR FUEL LEAK

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12. PERFORM INITIALIZATION

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

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