Infiniti QX56 (Z62). Manual - part 648

 

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Infiniti QX56 (Z62). Manual - part 648

 

 

EM-32

< REMOVAL AND INSTALLATION >

INTAKE MANIFOLD

• Tighten in numerical order as shown in the figure.

NOTE:
The figure shows the electric throttle control actuator viewed from
the air duct side.

• Perform the “Throttle Valve Closed Position Learning” when har-

ness connector of electric throttle control actuator is disconnected.
Refer to 

EC-147, "Description"

.

• Perform the “Idle Air Volume Learning” and “Throttle Valve Closed

Position Learning” when electric throttle control actuator is
replaced. Refer to 

EC-148, "Description"

 and 

EC-147, "Descrip-

tion"

.

JPBIA2362ZZ

ROCKER COVER

EM-33

< REMOVAL AND INSTALLATION >

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ROCKER COVER

Exploded View

INFOID:0000000006289545

Removal and Installation

INFOID:0000000006289546

REMOVAL

1.

Remove engine cover and bracket (rear). Refer to 

EM-25, "Exploded View"

.

2.

Disconnect PCV hose from rocker cover.

3.

Remove air cleaner case (upper) and air duct. Refer to 

EM-27, "Exploded View"

.

4.

Move the following parts to the position without the hindrance for work.
• Oil level gauge guide. Refer to 

EM-57, "Exploded View"

.

• Power steering fluid reservoir tank bracket. Refer to 

ST-54, "Exploded View"

.

• EVAP canister purge control solenoid valve. 

EM-30, "Exploded View"

.

• Fuel feed hose. Refer to 

EM-43, "Exploded View"

.

5.

Remove VVEL actuator motor assembly. Refer to 

EM-36, "Exploded View"

.

6.

Remove ignition coil. Refer to 

EM-29, "Exploded View"

.

CAUTION:

Never impact it.

7.

Remove rocker cover.

1.

Oil filler cap

2.

Clamp

3.

PCV hose

4.

Rocker cover (bank 2)

5.

Rocker cover gasket (bank 2)

6.

Rocker cover gasket (bank 1)

7.

Rocker cover (bank 1)

8.

PCV hose

9.

O-ring

10.

PCV valve

11.

Clamp

12. PCV hose

13.

PCV valve

14.

O-ring

A.

To air duct

B.

To intake manifold

C.

Comply with the installation proce-
dure when tightening. Refer to 

EM-

33, "Removal and Installation"

.

Refer to 

GI-4, "Components"

 for symbols in the figure.

JSBIA0387GB

EM-34

< REMOVAL AND INSTALLATION >

ROCKER COVER

• Loosen bolts in reverse order shown in the figure.

8.

Remove rocker cover gasket from rocker cover.

9.

Use scraper to remove all traces of liquid gasket from cylinder head & VVEL ladder assembly.

CAUTION:

Never scratch or damage the mating surface when cleaning off old liquid gasket.

10. Remove PCV valve from rocker cover, if necessary.

11. Remove oil filler cap from rocker cover, if necessary. 

INSTALLATION

1.

Apply liquid gasket with the tube presser (commercial service
tool) to VVEL ladder assembly (1).

Use Genuine RTV silicone sealant or equivalent. Refer to

GI-22, "Recommended Chemical Products and Sealants"

.

NOTE:
The figure shows an example of bank 1 side.
• Apply liquid gasket on the front and rear side of engine first. [5

mm (0.20 in) + 5 mm (0.20 in) side as shown in the figure]

2.

Install rocker cover gasket to rocker cover.

3.

Install rocker cover.
• Check that rocker cover gasket does not drop from the installation groove of rocker cover. 

A

:  Bank  2

B

:  Bank  1

: Engine front

JPBIA3481ZZ

A

: Liquid gasket application point

F

: End surface of VVEL ladder assembly

b

: 4.0 mm (0.16 in)

c

: 2.5 - 3.5 mm (0.098 - 0.138 in)

d

: 5.0 mm (0.20 in)

e

: 10.0 mm (0.39 in)

: Engine front

JPBIA3480ZZ

ROCKER COVER

EM-35

< REMOVAL AND INSTALLATION >

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4.

Tighten bolts in two steps separately in numerical order as
shown in the figure.

• Because of the limited working space, use adapter and torque

wrench assembly [SST: KV10119300 ( — )] (A) to tighten
bolts (on the No.7 and No. 8 cylinders) to the specified torque.

5.

Install ignition coil. Refer to 

EM-29, "Exploded View"

.

CAUTION:

• Install Ignition coil marked with an identification mark (A)

on cylinder No. 5, 6, 7 and 8.

6.

Install VVEL actuator motor assembly. Refer to 

EM-36, "Exploded View"

.

7.

Install in the reverse order of removal. 

A

:  Bank  2

B

:  Bank  1

: Engine front

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)

JPBIA3481ZZ

: Engine front

JPBIA2622ZZ

: Engine front

JPBIA3471ZZ

 

 

 

 

 

 

 

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