Infiniti QX56 (Z62). Manual - part 640

 

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Infiniti QX56 (Z62). Manual - part 640

 

 

EC-538

< SERVICE DATA AND SPECIFICATIONS (SDS) 

[VK56VD]

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

Idle Speed

INFOID:0000000006218038

*: Under the following conditions

• A/C switch: OFF

• Electric load: OFF (Lights, heater fan & rear window defogger)

• Steering wheel: Kept in straight-ahead position

Ignition Timing

INFOID:0000000006218039

*: Under the following conditions

• A/C switch: OFF

• Electric load: OFF (Lights, heater fan & rear window defogger)

• Steering wheel: Kept in straight-ahead position

Calculated Load Value

INFOID:0000000006218040

Mass Air Flow Sensor

INFOID:0000000006218041

*: Engine is warmed up to normal operating temperature and running under no load.

Condition

Specification

No load* (in P or N position)

600 

±

 50 rpm

Condition

Specification

No load* (in P or N position)

12 

±

 2

°

BTDC

Condition

Specification (Using CONSULT-III or GST)

At idle

5 – 35%

At 2,500 rpm

5 – 35%

Supply voltage

Battery voltage (11 – 14 V)

Output voltage at idle

0.9 – 1.1 V*

Mass air flow (Using CONSULT-III or GST)

1.0 – 5.0 g/s at idle*

7.0 – 20.0 g/s at 2,500 rpm*

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ENGINE

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SECTION 

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CONTENTS

ENGINE MECHANICAL

PRECAUTION ...............................................

3

PRECAUTIONS ...................................................

3

Precaution for Procedure without Cowl Top Cover 

......

3

Precaution for Supplemental Restraint System 
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .................................................................
..

3

Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect  ...................................
..

3

Precaution for Drain Engine Coolant and Engine 
Oil ............................................................................
..

4

Precaution for Disconnecting Fuel Piping  .................

4

Precaution for Handling High Pressure Fuel Sys-
tem ..........................................................................
..

4

Precaution for Removal and Disassembly  ................

4

Precaution for Inspection, Repair and Replace-
ment ........................................................................
..

4

Precaution for Assembly and Installation  ..................

4

Parts Requiring Angle Tightening  .............................

5

Precaution for Liquid Gasket .....................................

5

Definitions of Bank Names ........................................

6

PREPARATION ............................................

7

PREPARATION ...................................................

7

Special Service Tool  .................................................

7

Commercial Service Tool  ..........................................

9

BASIC INSPECTION  ...................................

12

CAMSHAFT VALVE CLEARANCE  ...................

12

Inspection ................................................................

12

COMPRESSION PRESSURE  ............................

16

Inspection ................................................................

16

SYMPTOM DIAGNOSIS  ..............................

18

NOISE, VIBRATION AND HARSHNESS 
(NVH) TROUBLESHOOTING  ............................

18

NVH Troubleshooting - Engine Noise ..................

18

Use the Chart Below to Help You Find the C
ause of the Symptom ............................................

19

PERIODIC MAINTENANCE  ........................

20

DRIVE BELTS  ...................................................

20

Exploded View .........................................................

20

Checking ..................................................................

20

Tension Adjustment ................................................

20

Removal and Installation  .........................................

20

Inspection ................................................................

21

AIR CLEANER FILTER .....................................

22

Exploded View .........................................................

22

Removal and Installation  .........................................

22

SPARK PLUG  ...................................................

23

Exploded View .........................................................

23

Removal and Installation  .........................................

23

Inspection ................................................................

24

REMOVAL AND INSTALLATION  ...............

25

ENGINE COVER  ...............................................

25

Exploded View .........................................................

25

Removal and Installation  .........................................

25

DRIVE BELT AUTO TENSIONER AND IDLER 
PULLEY .............................................................

26

Exploded View .........................................................

26

Removal and Installation  .........................................

26

AIR CLEANER AND AIR DUCT  .......................

27

Exploded View .........................................................

27

Removal and Installation  .........................................

27

Inspection ................................................................

28

IGNITION COIL  .................................................

29

Exploded View .........................................................

29

Removal and Installation  .........................................

29

INTAKE MANIFOLD  .........................................

30

Exploded View .........................................................

30

EM-2

Removal and Installation  ........................................

30

ROCKER COVER  ..............................................

33

Exploded View  ........................................................

33

Removal and Installation  ........................................

33

VVEL ACTUATOR ASSEMBLY  ........................

36

Exploded View  ........................................................

36

Removal and Installation  ........................................

36

Inspection ...............................................................

39

EXHAUST MANIFOLD AND THREE WAY 
CATALYST ........................................................

40

Exploded View  ........................................................

40

Removal and Installation  ........................................

40

Inspection ...............................................................

42

HIGH PRESSURE FUEL PUMP AND FUEL 
HOSE .................................................................

43

Exploded View  ........................................................

43

Removal and Installation  ........................................

43

Inspection ...............................................................

46

FUEL INJECTOR AND FUEL TUBE  .................

48

Exploded View  ........................................................

48

Removal and Installation  ........................................

49

Inspection ...............................................................

53

OIL PAN (LOWER) AND OIL STRAINER  .........

54

Exploded View  ........................................................

54

Removal and Installation  ........................................

55

Inspection ...............................................................

56

OIL PAN (UPPER) .............................................

57

Exploded View  ........................................................

57

Removal and Installation  ........................................

58

Inspection ...............................................................

60

TIMING CHAIN  ..................................................

61

Exploded View  ........................................................

61

Removal and Installation  ........................................

62

Inspection ...............................................................

72

CAMSHAFT .......................................................

74

Exploded View  ........................................................

74

Removal and Installation  ........................................

75

Inspection ...............................................................

77

CYLINDER HEAD  ..............................................

86

Exploded View  ........................................................

86

Removal and Installation  ........................................

87

Disassembly and Assembly ....................................

89

Inspection ................................................................

92

OIL SEAL ...........................................................

96

FRONT OIL SEAL  .....................................................

96

FRONT OIL SEAL : Removal and Installation  ........

96

REAR OIL SEAL  .......................................................

96

REAR OIL SEAL : Removal and Installation ...........

97

UNIT REMOVAL AND INSTALLATION  ....

98

ENGINE ASSEMBLY ........................................

98

Exploded View  ........................................................

98

Removal and Installation .........................................

99

Inspection ..............................................................

102

UNIT DISASSEMBLY AND ASSEMBLY ..

103

ENGINE STAND SETTING  ..............................

103

Setting ...................................................................

103

ENGINE UNIT  ...................................................

105

Disassembly ..........................................................

105

Assembly ..............................................................

105

CYLINDER BLOCK  ..........................................

106

Exploded View  ......................................................

106

Disassembly and Assembly  ..................................

107

Inspection ..............................................................

115

HOW TO SELECT PISTON AND BEARING  ...

125

Description ............................................................

125

Piston ....................................................................

125

Connecting Rod Bearing .....................................

126

Main Bearing ........................................................

128

SERVICE DATA AND SPECIFICATIONS 
(SDS) .........................................................

132

SERVICE DATA AND SPECIFICATIONS 
(SDS) ................................................................

132

General Specification ...........................................

132

Drive Belts .............................................................

132

Spark Plug  ............................................................

132

Exhaust Manifold ..................................................

133

Camshaft ...............................................................

133

Cylinder Head ......................................................

135

Cylinder Block ......................................................

137

Main Bearing ........................................................

141

Connecting Rod Bearing .....................................

142

PRECAUTIONS

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PRECAUTION

PRECAUTIONS

Precaution for Procedure without Cowl Top Cover

INFOID:0000000006289506

When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT 
PRE-TENSIONER"

INFOID:0000000006417202

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.

WARNING:

• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.

• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the

ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s)
with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly
causing serious injury.

• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

Precaution Necessary for Steering Wheel Rotation after Battery Disconnect

INFOID:0000000006289508

NOTE:
• Before removing and installing any control units, first turn the push-button ignition switch to the LOCK posi-

tion, then disconnect both battery cables.

• After finishing work, confirm that all control unit connectors are connected properly, then re-connect both

battery cables.

• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.

If a DTC is detected, perform trouble diagnosis according to self-diagnosis results.

For vehicle with steering lock unit, if the battery is disconnected or discharged, the steering wheel will lock and
cannot be turned.

PIIB3706J

 

 

 

 

 

 

 

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