Nissan Xterra. Manual - part 355

EM-48

< REMOVAL AND INSTALLATION >

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FUEL INJECTOR AND FUEL TUBE

• Upper and lower O-ring are different colors. 

• Handle O-ring with bare hands. Do not wear gloves.

• Lubricate new O-ring with new engine oil.

• Do not clean O-ring with solvent.

• Make sure that O-ring and its mating part are free of foreign material.

• When installing O-ring, be careful not to scratch it with tool or fingernails. 

• Do not twist or stretch O-ring. If O-ring was stretched while it was being attached, allow it to

retract before inserting it into fuel tube.

• Insert O-ring straight into fuel injector. Do not angle or twist it.

3. Install fuel injector to fuel tube as follows:
a. Insert clip (3) into clip groove (F) on fuel injector (5).

• Insert clip so that protrusion (E) of fuel injector matches cutout

(C) of clip.

CAUTION:

• Do not reuse O-rings (2 and 4).

• Do not reuse clip. Replace it with new one.

• Be careful to keep clip from interfering with O-ring (2). If

interference occurs, replace O-ring (2).

b. Insert fuel injector into fuel tube (1) with clip attached.

• Insert it while matching it to the axial center.

• Insert fuel injector so that protrusion (A) of fuel tube matches

cutout (B) of clip.

• Check that fuel tube flange (G) is securely fixed in flange fixing

groove (D) on clip.

c.

Check that installation is complete by checking that fuel injector

does not rotate or come off.

• Check that protrusions of fuel injectors and fuel tubes are

aligned with cutouts of clips after installation.

4. Connect the fuel tube (RH) to the fuel tube (LH), and tighten bolts temporarily.

• Tighten bolts to the specified torque after installing fuel tube and fuel injector assembly.

CAUTION:

• Handle O-ring with bare hands. Do not wear gloves.

• Do not reuse O-rings.

• Lubricate O-ring with new engine oil.

• Do not clean O-ring with solvent.

• Make sure that O-ring and its mating part are free of foreign material.

• When installing O-ring, be careful not to scratch it with tool or fingernails. 

• Do not twist or stretch O-ring. If O-ring was stretched while it was being attached, allow it to

retract before inserting it into fuel tube.

• Insert new O-ring straight into fuel tube. Do not angle or twist it.

5. Install fuel tube and fuel injector assembly to intake manifold.

CAUTION:

Do not let the tip of the injector nozzle come in contact with other parts.

Fuel tube side

: Blue

Nozzle side

: Brown

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FUEL INJECTOR AND FUEL TUBE

EM-49

< REMOVAL AND INSTALLATION >

[VQ40DE]

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• Tighten bolts in two steps in numerical order as shown.

6. Tighten bolts which connect fuel tube (RH) and fuel tube (LH) to the specified torque.
7. Connect fuel injector harness connector.
8. Install intake manifold collector. Refer to 

EM-25, "Removal and Installation"

.

9. Installation of the remaining components is in the reverse order of removal.

INSPECTION AFTER INSTALLATION

Check on Fuel Leakage

1. Apply fuel pressure to the fuel lines by turning ignition switch ON (with engine stopped). Then check for

fuel leaks at the connections.

2. Start the engine and rev it up and check for fuel leaks at the connections.

WARNING:

Do not touch engine immediately after stopping, as engine becomes extremely hot.

NOTE:

Use mirrors for checking at points out of clear sight.

Fuel injector tube assembly bolts
 1st step

: 10.1 N·m (1.0 kg-m, 7 ft-lb)

 2nd step

: 22.0 N·m (2.2 kg-m, 16 ft-lb)

PBIC2902E

EM-50

< REMOVAL AND INSTALLATION >

[VQ40DE]

INTAKE VALVE TIMING CONTROL

INTAKE VALVE TIMING CONTROL

Intake Valve Timing Control Solenoid Valve (LH)

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REMOVAL

1. Disconnect the harness connector from intake valve timing control solenoid valve (LH).
2. Remove intake valve timing control solenoid valve bolts (LH) and O-ring from rocker cover.

CAUTION:

Do not reuse O-ring.

INSTALLATION

Installation is in the reverse order of removal. Refer to 

EM-51, "Exploded View"

.

CAUTION:

• Do not reuse O-rings.

• Lubricate the new O-ring for the intake valve timing control solenoid valve with clean engine oil

before installing.

Intake Valve Timing Control Solenoid Valve (RH)

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REMOVAL

1. Remove intake manifold collector. Refer to 

EM-25, "Removal and Installation"

.

2. Disconnect the harness connector from intake valve timing control solenoid valve (RH).
3. Remove intake valve timing control solenoid valve bolts (RH) and O-ring from rocker cover.

CAUTION:

Do not reuse O-ring.

INSTALLATION

Installation is in the reverse order of removal. Refer to 

EM-51, "Exploded View"

.

CAUTION:

• Do not reuse O-rings.

• Lubricate the new O-ring for the intake valve timing control solenoid valve with clean engine oil

before installing.

FRONT TIMING CHAIN CASE

EM-51

< REMOVAL AND INSTALLATION >

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FRONT TIMING CHAIN CASE

Exploded View

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Removal and Installation

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NOTE:

When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-

ing.

REMOVAL

1. Drain engine oil. Refer to 

LU-8, "Changing Engine Oil"

.

CAUTION:

• Perform this step when engine is cold.

• Do not spill engine oil on drive belts.

2. Drain engine coolant from radiator. Refer to 

CO-11, "Changing Engine Coolant"

.

CAUTION:

• Perform this step when engine is cold.

• Do not spill engine coolant on drive belts.

3. Remove engine cooling fan (Motor driven type). Refer to 

CO-19, "Removal and Installation (Motor driven

type)"

.

4. Disconnect engine harnesses and remove harness brackets from front timing chain case.
5. Remove EVAP canister purge volume control solenoid valve, if necessary.
6. Remove drive belt. Refer to 

EM-13, "Removal and Installation"

.

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1.

O-ring

2.

Collared O-ring

3.

Intake valve timing control cover (RH)

4.

Idler pulley

5.

Drive belt auto-tensioner

6.

Intake valve timing control cover (LH)

7.

Collared O-ring

8.

O-ring

9.

Chain tensioner cover

10. Cooling fan bracket

11. Crankshaft pulley

12.

Front oil seal

13. Water pump cover

14. Front timing chain case

15.

O-ring

A.

Refer to 

EM-51