Infiniti QX4 service since 1996 of release
1. Introduction
2. Maintenance instruction
3. Routine maintenance
4. Engine
5. Cooling and heating systems
5.1. Specifications
5.2. Antifreeze - general information
5.3. Service of system of cooling
5.4. Removal, installation and check of serviceability of functioning of the thermostat
5.5. Removal, regenerative repair and installation of a radiator of system of cooling
5.6. Replacement of the water pump
5.7. Removal and installation of the fan of system of cooling
5.8. Air lines of distribution of air submitted to salon
5.9. System of automatic air conditioning – a design and a functioning principle
5.10. Design of a refrigerator path of central air of air
5.11. The To/in compressor, - the general information and a functioning principle
5.12. A receiver dehumidifier - the general information and service
5.13. Check of serviceability of functioning and service of systems of heating and air conditioning
5.14. Diagnostics of central air of air
6. Power supply systems and managements
7. Start and charge systems
8. Transmission line
9. Brake system
10. Suspension bracket and steering
11. Body
12. Electric equipment
 












5-1-specifikacii.html

5.1. Specifications

Separate parameters are specified also in the text of Head and in case of obligation of their performance are allocated with a bold print.


Cooling system

Characteristic

Value

Volume of cooling liquid

See. Head Routine maintenance

Settlement pressure of a cover of a radiator, kgf/cm 2

  • Ventilating valve

0.6 — 0.98

  • Safety valve

9 — 14

Temperature of opening of the thermostat, °C

82

Valve stroke of the thermostat, mm

10 (at 95°С)


Central air

Characteristic

Value

To/in compressor type

Calsonic V6 6-cylinder

Coolant type

R-134a

Volume of a coolant, ml

633 — 738

Type of refrigerator oil

"S" (No. KLH00-PAGS0)

Volume of the refrigerator oil which is filled in at change of components, ml

  • Compressor

To fill in in the quantity equal to amount of merged oil

  • Condenser

75

  • Evaporator

75

  • Receiver dehumidifier

6

  • Full volume of system

204

Working pressure in system at temperature 30°С and relative humidity of 50 — 70 % (to check not less than 10 minutes later after system start)

  • Low-pressure head path, kgf/cm 2

2.0 — 2.8

  • High-pressure head path, kgf/cm 2

14.5 — 19.2

Effort of a tension of a belt of a drive of the To/in compressor

  • Size of a deflection of a new belt, mm

9.0 — 10.0

  • Size of a deflection of the belt which was in the use, mm
    • Models till 1999 вып.

9.0 — 11.0

    • Models since 2000 вып.

10.5 — 11.5

Location of service valves of the compressor

  • Low-pressure head path

In the line of a low pressure between the evaporator and the compressor

  • High-pressure head path

In the line of a high pressure between the compressor and the condenser


Productivity of To/in system

Temperature of external air, °C

Temperature on leaving the system, °C

At relative humidity of 50 — 60 %

25

6 — 9

30

10 — 13.6

35

15.2 — 19.5

40

22.5 — 27.1

At relative humidity of 60 — 70 %

25

9 — 12.2

30

13.6 — 17.2

35

19.5 — 23.7

40

27.1 — 32.3


Temperature and pressure head characteristics of system

Temperature of external air, °C (at relative humidity of 50 — 70 %)

Pressure in a high-pressure head path, kgf/cm 2 Pressure in a low-pressure head path, kgf/cm 2

25

12.5 — 16.7

1.8 — 2.6

30

14.5 — 19.2

2.0 — 2.8

35

16.9 — 22.3

2.4 — 3.2

40

19.6 — 25.5

29. — 3.8


Condition of the double-thread switch

Pressure, kgf/cm 2

System condition Conductivity between plugs 1 and 2
Low-pressure head path

Lowering to 1.6 — 2.0

Off.

No

Raising to 1.6 — 2.0

Incl.

Takes place

High-pressure head path

Lowering to 19 — 23

Incl.

Takes place

Raising to 19 — 23

Off.

No



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5.2. Antifreeze - general information