Service of the Infiniti QX4 since 1996 of release
1. Introduction
2. Maintenance instruction
3. Routine maintenance
4. Engine
5. Cooling system and heating
6. Feed and control systems
7. Systems of start and charge
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 state 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 brake mechanisms of back wheels
9.8. Removal and installation of the main brake cylinder (MBC)
9.9. Removal and installation of assembly of the vacuum amplifier of brakes
9.10. Pumping of the brake system
9.11. Adjustment of the 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 tempostata
9.15. Removal and installation of the ABS hydromodulator
9.16. Removal and installation of the G-sensor
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 a driving electric motor 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 the Head and in case of obligation of their performance are highlighted in bold type.


Characteristic

Value

Type of brake fluid

DOT 3

Volume of brake fluid, l

See the 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 provision of the pedal (D) which is squeezed out with effort of 50 kgfs, mm

70

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

4 — 12

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

70


Adjustment of sensors switches of stoplights and tempostata

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

Characteristic

Value

The size of an adjusting gap (With 1 and S 2), mm

0.25 — 1.0


Adjustment of the parking brake

Characteristic

Value

The 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

The 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

  • Extreme admissible value

26

Extreme admissible size of a cross beating of a disk, mm

0.08

Extreme admissible residual thickness of frictional slips, mm

2.0


Drum brake mechanisms

Characteristic

Value

Internal diameter of the brake drum, mm

  • Nominal rate

295

  • Extreme admissible value

296.5

Extreme admissible size of ovality of the brake drum, mm

0.03

Diameter of wheel cylinders, mm

22.22/20.64

Extreme 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 / end of a 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

Output 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

Output 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

Output 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 food (tension fell)

61

Malfunction in a chain of a driving electric motor of the hydromodulator or its relay

63

The relay of the electromagnetic valve is faulty

71

The ABS control unit is faulty


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


Efforts of tightening of threaded 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 nipple sockets

16 — 19

Cap nuts of nipple 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




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