Service Infiniti QX4 since 1996 of release
1. Introduction
2. The maintenance instruction
3. Routine maintenance
4. The engine
4.1. Specifications
4.2. Check компрессионного pressure in cylinders
4.3. Diagnostics of a condition of the engine with vacuum gauge application
4.4. Removal and engine installation
4.5. Removal and installation of the inlet pipeline
4.6. Replacement of a belt of drive ГРМ
4.7. Removal, check of a condition and installation of a head of cylinders
4.8. Replacement of a forward epiploon of a cranked shaft
4.9. Removal, check of a condition and installation of components клапанного the mechanism
4.10. Replacement of epiploons of camshafts
4.11. Replacement of a back epiploon of a cranked shaft
4.12. Removal and pallet installation картера
4.13. Removal, service and installation of the oil pump
4.14. Alternative variants of schemes of regenerative repair of the engine
4.15. An order of dismantling of the engine by its preparation for major repairs
4.16. Dismantling and check of a condition of a head of cylinders and components клапанного the mechanism
4.17. Recommendations about service of valves
4.18. Assemblage of a head of cylinders
4.19. Removal of shatunno-piston assemblages
4.20. Removal of a cranked shaft
4.21. Cleaning of the block of the engine
4.22. Check of a condition of the block of the engine
4.23. Хонингование mirrors of cylinders
4.24. Check of a condition of components of shatunno-piston group
4.25. Check of a condition of a cranked shaft
4.26. Check of a condition and selection of loose leaves radical and шатунных bearings of a cranked shaft
4.27. An engine assembly order
4.28. Installation of piston rings
4.29. Installation of a cranked shaft and check of working backlashes of radical bearings
4.30. Installation of shatunno-piston assemblages and check of size of working backlashes in шатунных bearings of a cranked shaft
4.31. Trial start and обкатка the engine after major repairs
5. Cooling and heating systems
6. Power supply systems and managements
7. Start and charge systems
8. A transmissionnaja line
9. Brake system
10. A suspension bracket and a steering
11. A body
12. An electric equipment
 












4-1-specifikacii.html

4.1. Specifications

Separate parametres are resulted also in the text of the Head and in case of compulsion of their performance are allocated by a bold type.


The scheme of an arrangement of cylinders

 

The characteristic

Value

Designation

VG33E

Type

Petrol, 4-taktnyj, 6-cylinder (V6 x 60 ), DOHC

Arrangement

Forward, longitudinal

Drive ГРМ

Zubchatoremennaja transfer

Quantity of valves on the cylinder

4

Working volume of cylinders, sm 3

3275

Developed capacity, h.p.

168 (125) at 4800 rpm

Twisting moment, Nanometer

266 at 2800 rpm

Diameter of cylinders, mm

91.5

Course of pistons, mm

83.0

Ignition order (the Scheme of an arrangement of cylinders see an illustration)

1-2-3-4-5-6

Kompressionnoe pressure in cylinders, kgs/sm 2

  • Rating value

12.1

  • The minimum admissible value

9.0

  • The maximum admissible difference between cylinders

1.0

Compression degree

8.9:1

The power supply system

The distributed consecutive injection (SFI)


The oil pump

The characteristic

Value

Pressure of oil, kgs/sm 2

  • On single turns

0.6

  • At turns 2000 in a minute

4.2—4.6

Backlash between teeths of external and internal gear wheels, mm

  • Limiting admissible working value

0.180

Backlash between an external gear wheel and the pump case, mm

  • Rating value

0.114—0.200

Axial люфт gear wheels in the case, mm

  • External gear wheel

0.050—0.109

  • Internal gear wheel

0.050—0.090

Backlash of landing of a ledge of an internal gear wheel in a case nest, mm

0.045—0.091


Head of cylinders


Head moulding

The characteristic

Value

Adjusting height of a head, mm (Removal, check of a condition and installation of a head of cylinders see)

106.80—107.20

Limiting admissible size неплоскостности, mm

0.10

Limiting admissible total depth проточки (the block + a head), mm

0.20


Saddles of valves

Illustrations Under control parametres of saddles of inlet valves and Under control parametres of saddles of final valves see.

The characteristic

Value

Angle of slope of a working facet, hailstones

45

Width of a working facet, mm

  • Inlet valves

1.75

  • Final valves

1.70

Diameter of a landing nest, mm

  • Inlet valves

44.500—44.516

  • Final valves

37.500—37.516


Directing plugs of valves

The characteristic

Value

Diameter of a landing nest, mm

  • Inlet valves

11.175—11.196

  • Final valves

12.175—12.196

Internal diameter, mm

  • Inlet valves

7.000—7.018

  • Final valves

8.000—8.011

Adjusting height выступания *, mm

13.20—13.40

Backlashes of landing of cores of valves, mm

  • Inlet valves

0.020—0.053

  • Final valves

0.040—0.049


* It is measured from the top cut of the plug to a surface of a saddle of an external spring at the removed adjusting washer (Dismantling and check of a condition of a head of cylinders and components клапанного the mechanism see).


Valves and клапанные springs

Dismantling and check of a condition of a head of cylinders and components клапанного the mechanism see.


Inlet valves

The characteristic

Value

Angle of slope of a working facet, hailstones

4515 '—4545'

Diameter of a plate, mm

41.95—42.25

The minimum admissible width of a cylindrical part of a plate, mm

0.50

The minimum admissible length, mm

125.30

Diameter of a core, mm

6.965—6.980

The maximum admissible depth face проточки a shaft, mm

0.20


Final valves

The characteristic

Value

Angle of slope of a working facet, hailstones

4515 '—4545'

Diameter of a plate, mm

35.00—35.20

The minimum admissible width of a cylindrical part of a plate, mm

0.50

The minimum admissible length, mm

124.20

Diameter of a core, mm

7.962—7.970

The maximum admissible depth face проточки a shaft, mm

0.20


Klapannye springs

The characteristic

Value

Free length, mm

  • Internal spring

44.10

  • External spring

51.20

Limiting admissible size of infringement торцовки, mm (Dismantling and check of a condition of a head of cylinders and components клапанного the mechanism see)

  • Internal spring

1.90

  • External spring

2.20

Effort of compression, kgs/mm

  • Internal spring

26/25

  • External spring

74.7/30


Pushers of valves

The characteristic

Value

Diameter of a landing nest, mm

16.000—16.013

Diameter of a pusher, mm

15.947—145.957

Landing backlash, mm

0.043—0.066


Camshafts

Identification подшипниковых necks of camshafts and dimensional characteristics for definition of backlashes in bearings see an illustration.

The characteristic

Value

Diameter of bearings, mm

  • Under a neck "And"

47.000—47.025

  • Under a neck "In"

42.500—42.525

  • Under a neck "With"

48.000—48.025

Diameter of necks, mm

  • Neck "And"

46.920—46.94

  • Neck "In"

42.420—42.440

  • Neck "With"

47.920—47.940

Size axial люфта a shaft, mm

0.30—0.60

Limiting admissible size of radial palpation, mm

0.10

Height of cams, mm

38.943—39.133

Working backlashes in bearings, mm

0.060

Limiting admissible size of radial palpation of a cogwheel, mm

0.10


The block of cylinders


Block moulding

The characteristic

Value

Diameter of cylinders, mm

  • Except cylinders №№ 3 and 4
    • Dimensional group 1

91.500—91.510

    • Dimensional group 2

91.511—91.520

    • Dimensional group 3

91.521—91.530

  • Cylinders №№ 3 and 4
    • Dimensional group 1

91.500—91.505

    • Dimensional group 2

91.506—91.510

    • Dimensional group 3

91.511—91.515

    • Dimensional group 4

91.516—91.520

    • Dimensional group 5

91.521—91.525

    • Dimensional group 6

91.526—91.530

Limiting admissible size конусности cylinders, mm

0.015

Limiting admissible size of ovality of cylinders, mm

0.015

The minimum admissible height, mm

The information is not resulted

Limiting admissible size неплоскостности, mm

0.10

Limiting admissible total depth проточки (the block + a head), mm

0.20


Cranked shaft and radical / шатунные bearings


Cranked shaft

The characteristic

Value

Size axial люфта, mm

  • Rating value

0.05—0.17

  • Limiting admissible value

0.30

Size of radial palpation, mm

  • Rating value

0.025

  • Limiting admissible value

0.10


Radical bearings

The characteristic

Value

Diameter of necks, mm

  • Dimensional group 0

62.967—62.975

  • Dimensional group 1

62.959—62.967

  • Dimensional group 2

62.951—62.959

Limiting admissible size конусности necks, mm

0.005

Limiting admissible size of ovality of necks, mm

0.005

Working backlashes in bearings, mm

  • Rating value

0.028—0.056

  • Limiting admissible value

0.090


Shatunnye bearings

The characteristic

Value

Diameter of necks, mm

49.955—49.974

Limiting admissible size конусности necks, mm

0.005

Limiting admissible size of ovality of necks, mm

0.005

Working backlashes in bearings, mm

  • Rating value

0.015—0.054

  • Limiting admissible value

0.090


Rods

The characteristic

Value

Diameters of nests of heads, mm

  • The top head

20.982—20.994

  • The bottom head

53.000—53.013

Distance centre to centre nests, mm

154.10—154.20

Limiting admissible size of a bend on 100 mm of length, mm

0.15

Limiting admissible size of twisting on 100 mm of length, mm

0.30

Size axial люфта, mm

  • Rating value

0.20—0.35

  • Limiting admissible value

0.40


Pistons and piston rings


Pistons

The characteristic

Value

Landing backlashes in cylinders, mm

  • Except №№ 3 and 4

0.025—0.045

  • №№ 3 and 4

0.015—0.025

Diameter, mm

  • Except №№ 3 and 4
    • Dimensional group 1

91.465—91.475

    • Dimensional group 2

91.475—91.485

    • Dimensional group 3

91.485—91.495

    • With excess on 0.25 mm

91.715—91.745

    • With excess on 0.50 mm

91.965—91.995

  • Cylinders №№ 3 and 4
    • Dimensional group 2-1

91.480—91.185

    • Dimensional group 3-2

91.485—91.490

    • Dimensional group 3-3

91.490—91.495

    • Dimensional group 4-4

91.495—91.500

    • Dimensional group 4-5

91.500—91.505

    • Dimensional group 5-6

91.505—91.510

    • With excess on 0.25 mm

91.715—91.745

    • With excess on 0.50 mm

91.965—91.995


Piston fingers

The characteristic

Value

Diameter, mm

20.971—20.983

Landing in the piston, mm

0—0.004 (in a tightness)

Landing in a rod, mm

0.005—0.017


Piston rings

The characteristic

Value

Backlash in the lock, mm

  • The first компрессионное

0.20—0.40

  • The second компрессионное

0.50—0.69

  • Маслосъемное

0.20—0.69

Lateral backlash of landing in a flute, mm

  • The first компрессионное

0.024—0.076

  • The second компрессионное

0.030—0.070

  • Маслосъемное

0.015—0.185


Efforts of a tightening of carving connections, Nanometer

Connection type

Value

Fastening of a persistent plate of a camshaft

78—88

Bolt of fastening of a cogwheel of a camshaft

78—88

Nuts of the bottom heads of rods

  • Stage 1

14—16

  • Stage 2

To hold on on a corner of 60-65 degrees

Bolt of a pulley of a cranked shaft

191—211

Bolts of fastening of heads of cylinders (the Order of a tightening of bolts of fastening of heads of cylinders see an illustration)

  • Stage 1

29

  • Stage 2

59

  • Stage 3

To release all

  • Stage 4

29

  • Stage 5

To hold on on a corner of 60-65 degrees

Bolts of fastening of support of a suspension bracket of the power unit to the block of cylinders

43—55

Bolts / of a nut of fastening of final collectors (the Order of a tightening of bolts of fastening of final collectors see an illustration)

28—33

Bolts of fastening of the distributor of ignition

14—18

Fastening bolts приводного a disk

83—93

Bolts of fastening of the inlet pipeline

18—22

Bolts of fastening of assemblage of covers of radical bearings (a tightening order — return shown (the Order release bolts of fastening of assemblage of covers of radical bearings see an illustration))

90—100

Drain stopper of the pallet картера

29—39

Fastening bolt маслозаборной tubes to pump assemblage

16—17

Bolts of fastening of the oil pump to the block of cylinders

  • The long

22—29

  • The short

6—8

Bolts of fastening of a cover of the oil pump

6—8

Заглушка редукционного the valve

39—69

Bolts of fastening of assemblages of axes коромысел

18—22

Bolt / a nut натяжителя газораспределительного a belt

43—58

Bolts of fastening of the water pump

12—15

Bolts / of a nut of fastening of the inlet pipeline (a tightening order — return shown (Removal and installation of the inlet pipeline see))

  • Stage 1

4

  • Stage 2

8—10

Bolts of fastening of the pallet картера (the Order of a tightening of bolts of fastening of the pallet картера see an illustration)

7—8

Bolts of fastening of the holder of a back epiploon of a cranked shaft

6—8

Bolts of fastening of a cover of drive ГРМ

3—5

Screws of fastening of covers ГРМ

3



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4. The engine
On the following page
4.2. Check компрессионного pressure in cylinders