Infiniti QX56 (JA60). Manual - part 471

EM-38

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ROCKER COVER

ROCKER COVER

Exploded View

INFOID:0000000005148995

Removal and Installation

INFOID:0000000005148996

REMOVAL

1. Remove the engine room cover using power tool. Refer to 

EM-24, "Removal and Installation"

.

2. Move the harness on the upper rocker cover and its peripheral aside.
3. Remove the ignition coils. Refer to 

EM-37, "Removal and Installation"

.

4. Remove the PCV hose from the PCV control valves.
5. Loosen the bolts in reverse order shown using power tool for

rocker cover (A) or (B).
•

: Engine front

CAUTION:

Do not hold the rocker cover (RH) (B) by the oil filler neck.

INSTALLATION

1.

Rocker cover (LH)

2.

PCV control valve

3.

O-ring

4.

Rocker cover gasket (LH)

5.

Rocker cover (RH)

6.

PCV control valve

7.

O-ring

8.

Oil filler cap

9.

Rocker cover gasket (RH)

KBIA2508E

WBIA0697E

ROCKER COVER

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1. Apply liquid gasket to the joint part of the cylinder head and

camshaft bracket following the steps below.

NOTE:

Illustration shows an example of (LH) side (zoomed in shows

No.1 camshaft bracket).

a. Refer to illustration 

″a″ to apply liquid gasket to the joint part of

No.1 camshaft bracket and cylinder head.

b. Refer to illustration 

″b″ to apply liquid gasket 90° to illustration

″a″.

Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-15, "Recommended Chemical Products and Sealants"

.

2. Install the rocker cover (A) or (B).

•

: Front

• Make sure the new rocker cover gasket is installed in the

groove of the rocker cover (A) or (B). 

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

CAUTION:

Do not hold the rocker cover (RH) (B) by the oil filler neck.

3. Install the PCV hoses.

NOTE:

• Remove foreign materials from inside the hose using compressed air.

• The inserted length is within 25 - 30 mm (0.98 - 1.18 in) [Target: 25 mm (0.98 in)].

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

KBIA2510E

1st step

: 2.0 N·m (0.2 kg-m, 18 in-lb)

2nd step

: 8.3 N·m (0.85 kg-m, 73 in-lb)

WBIA0697E

EM-40

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FUEL INJECTOR AND FUEL TUBE

FUEL INJECTOR AND FUEL TUBE

Exploded View

INFOID:0000000005148997

Removal and Installation

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CAUTION:

Do not remove or disassemble parts unless instructed as shown.

REMOVAL

1. Remove engine room cover using power tool. Refer to 

EM-24, "Removal and Installation"

.

2. Release fuel pressure. Refer to 

EC-489, "Fuel Pressure Check"

.

3. Disconnect the negative battery terminal. Refer to 

PG-74, "Removal and Installation"

.

4. Remove air duct and resonator assembly. Refer to 

EM-25, "Exploded View"

.

5. Disconnect fuel injector harness connectors.
6. Disconnect EVAP canister purge control solenoid valve.
7. Disconnect fuel hose assembly from fuel tube (RH bank and LH bank).

CAUTION:

• While hoses are disconnected, plug them to prevent fuel from draining.

• Do not separate fuel connector and fuel hose.

8. Remove fuel injectors with fuel tube assembly.

1.

Fuel tube (RH bank)

2.

Cap

3.

Fuel damper

4.

O-ring

5.

O-ring (Blue)

6.

Fuel injector

7.

Clip

8.

O-ring (Brown)

9.

O-ring

10. Fuel hose assembly

11. Fuel tube (LH bank)

KBIA2472E

FUEL INJECTOR AND FUEL TUBE

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9. Remove fuel injector from fuel tube.
a. Spread open to remove clip.
b. Remove fuel injector from the fuel tube by pulling straight out.

CAUTION:

• Be careful with remaining fuel that may leak out from fuel

tube.

• Do not damage injector nozzles during removal.

• Do not bump or drop fuel injectors.

• Do not disassemble fuel injectors.

10. Remove fuel damper from each fuel tube.

INSTALLATION

1. Install fuel damper to each fuel tube.
a. Apply engine oil to O-ring and set it into the cap of fuel tube.

CAUTION:

• Handle O-ring with bare hands. Never wear gloves.

• 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 for-

eign material.

• When installing O-ring, be careful not to scratch it with

tool or fingernails. Also be careful not to twist or stretch

O-ring.

b. Make sure that backup spacer is in the O-ring connecting sur-

face of fuel damper.

NOTE:

Backup spacer is fuel damper assembly part.

c. Insert fuel damper until it seats on fuel tube.

CAUTION:

• Insert straight, making sure that the axis is lined up.

• Do not pressure-fit with excessive force.

d. Install cap, and then tighten bolts evenly by turns.

• After tightening bolts, make sure that there is no gap between cap and fuel tube.

2. Install O-rings to fuel injector paying attention to the items below.

CAUTION:

• Upper and lower O-ring are different. 

• Handle O-ring with bare hands. Never wear gloves.

KBIA2506E

Reference value

:130 N (13.3 kg, 29.2 lb)

Fuel tube side

: Blue

Nozzle side

: Brown

KBIA2473E