Infiniti QX4 service since 1996 of release
1. Introduction
2. Maintenance instruction
3. Routine maintenance
4. Engine
5. Cooling and heating systems
6. Power supply systems and managements
7. Start and charge systems
8. Transmission line
9. Brake system
9.1. Specifications
9.2. System of anti-blocking of brakes (ABS) - the general information and codes of malfunctions
9.3. Check of a condition and replacement of brake lines and hoses
9.4. Replacement of blocks of disk brake mechanisms of forward wheels
9.5. Removal and installation of a support of the disk brake mechanism
9.6. Removal and installation of a brake disk
9.7. Replacement of brake boots of drum-type brake mechanisms of back wheels
9.8. Removal and installation of the main brake cylinder (GTTs)
9.9. Removal and installation of assembly of the vacuum amplifier of brakes
9.10. Pumping of brake system
9.11. Adjustment of a drive of the parking brake
9.12. Adjustments of a pedal of a foot brake
9.13. Adjustment of a spring of the valve regulator (LSV) sensitive to loading
9.14. Adjustment of sensors switches of stoplights and темпостата
9.15. Removal and ABS hydromodulator installation
9.16. Removal and G-sensor installation
9.17. Check of serviceability of functioning of wheel ABS sensors
9.18. Check of serviceability of functioning of the G-sensor
9.19. Check of serviceability of functioning of the relay of the driving electromotor of the hydromodulator
9.20. Check of serviceability of functioning of the relay of the electromagnetic valve of the hydraulic ABS modulator
10. Suspension bracket and steering
11. Body
12. Electric equipment
 












9-1-specifikacii.html

9.1. 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.


Characteristic

Value

Type of brake liquid

DOT 3

Volume of brake liquid, l

See. Head Routine maintenance

Working diameter of GTTs, mm

25.4


Adjustment of a pedal of a foot brake

See an illustration Adjusting parameters of a pedal of a foot brake.

Characteristic

Value

Height of provision of the released pedal (N), mm

175 — 185

Height of position of 50 kgfs of a pedal squeezed out with effort (D), mm

70

Size of a free wheeling of a pedal (And), mm

4 — 12

The minimum admissible size of a reserve course of a pedal (at effort of squeezing of 49 kgfs), mm

70


Adjustment of sensors switches of stoplights and темпостата

See an illustration Adjusting parameters of a pedal of a foot brake.

Characteristic

Value

Size of an adjusting gap (With 1 and With 2), mm

0.25 — 1.0


Adjustment of the parking brake

Characteristic

Value

Number of clicks of raising of the lever of the parking brake at procrastination with effort of 20 kgfs

6 — 8


Vacuum amplifier of brakes

Characteristic

Value

Size of a vystupaniye of a rod of a pusher of the vacuum amplifier of brakes (see. Removal and installation of assembly of the vacuum amplifier of brakes), mm

10.1 — 10.4


Disk brake mechanisms

Characteristic

Value

Diameter of a brake disk, mm

300

Thickness of a brake disk, mm

  • Nominal rate

28.0

  • Limiting admissible value

26

Limiting admissible size of cross-section palpation of a disk, mm

0.08

Limiting admissible residual thickness of frictional slips, mm

2.0


Drum-type brake mechanisms

Characteristic

Value

Internal diameter of a brake drum, mm

  • Nominal rate

295

  • Limiting admissible value

296.5

Limiting admissible size of ovality of a brake drum, mm

0.03

Diameter of wheel cylinders, mm

22.22/20.64

Limiting admissible residual thickness of frictional slips, mm

1.5


Diagnostic DTC ABS codes

Are displayed by flashes of a control lamp of ABS

code No.

Cause of failure

12

Malfunctions are absent (a code of the beginning / the completion of procedure of reading)

17

Malfunction in a G-sensor chain

18 *

Malfunction of a rotor of the wheel sensor

21 *

Break in a chain of the right forward wheel sensor

22 *

Short circuit in a chain of the right forward wheel sensor

25 *

Break in a chain of the left forward wheel sensor

26 *

Short circuit in a chain of the left forward wheel sensor

31 *

Break in a chain of the right back wheel sensor

32 *

Short circuit in a chain of the right back wheel sensor

35 *

Break in a chain of the left back wheel sensor

36 *

Short circuit in a chain of the left back wheel sensor

41

Target signal of the electromagnetic valve of management of a contour of the right forward wheel

42

Entrance signal of the electromagnetic valve of management of a contour of the right forward wheel

45

Target signal of the electromagnetic valve of management of a contour of the left forward wheel

46

Entrance signal of the electromagnetic valve of management of a contour of the left forward wheel

55

Target signal of the electromagnetic valve of management of a contour of back wheels

56

Entrance signal of the electromagnetic valve of management of a contour of back wheels

57

Contour of giving of a food (tension fell)

61

Malfunction in a chain of the driving electromotor of the hydromodulator or its relay

63

The relay of the electromagnetic valve is faulty

71

The ABS control unit is faulty


* the entering Reason in memory of the block of these codes can be more than 40-second pro-slipping of one or several wheels.


Efforts of a tightening of carving connections, Nanometer

Connection type

Value

Nuts of fastening of a back brake board

54 — 73

Lock-nut of a rod of a pusher of the vacuum amplifier of brakes

16 — 22

Bolts of shtutserny sockets

16 — 19

Cap nuts of shtutserny connections

15 — 18

Nut of an axis of a pedal of a foot brake

16 — 22

Bolts of fastening of a support of the brake mechanism

32 — 42

Bolts of fastening of naves of free rotation

25 — 34

Bolts of fastening of naves to brake disks

49 — 69

Bolt / nut of fastening of the LSV valve regulator

34 — 39

Nuts of fastening of GTTs

12 — 15

Nuts of fastening of assembly of the vacuum amplifier of brakes

12 — 16

Bolts of fastening of an anchor bracket of the brake mechanism of a forward wheel

172 — 182

Blocking nut of the forward wheel bearing

  • Stage 1

79 — 98

  • Stage 2

To weaken

  • Stage 3

To hold on on 0.5 — 1.5 Nanometers to the Stage 1

Nuts of fastening of the ABS hydromodulator

18 — 24

Cap nuts of brake lines

15 — 18

Wheel nuts

118 — 147

Bolts of fastening of wheel sensors

  • Forward sensors

4.4 — 5.8

  • Back sensors

18 — 24

Pumping gates

7 — 9

Bolts of fastening of the G-sensor

4.4 — 5.8



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9. Brake system
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9.2. System of anti-blocking of brakes (ABS) - the general information and codes of malfunctions