15.1. Specifications

Specifications

Data
Value
Main brake cylinder

– type

Tandem

– diameter of the cylinder, mm

  • CBS (Conventional Brake System – the ordinary brake system)
22,22
  • ABS
23,81
Vacuum amplifier of brakes

– type

Vacuum

– effective diameter, mm

  • CBS
228,6
  • ABS
177,8–203,2

– ratio

  • CBS
5,5:1
  • ABS
6,0:1
Pressure limiter
4DR 5DR

– pressure of inclusion, MPa

2,55 3,9

– decompression relation

0,27:1 0,32:1
Forward brakes

– type

Disk, ventilated

– diameter of a brake disk, mm

257

– thickness of a brake disk, mm

24

– thickness of brake shoes, mm

11

– diameter of the cylinder, mm

54
Back disk brakes

– diameter of a brake disk, mm

258

– thickness of a brake disk, mm

10

– thickness of brake shoes, mm

9
Back drum brakes

– internal diameter of the brake drum, mm

203,2

– thickness of brake shoes, mm

9,4

– diameter of the cylinder, mm

405
Parking brake
Mechanical, influencing back wheels

Anti-blocking system of brakes

Data Value
ECU control unit

– supply voltage, In

10–16

– range of temperatures, °C

– 40 … 110
Control lamp: ABS, EBD

– supply voltage, In

12

– the consumed current, мА

80
Sensor of frequency of rotation of a wheel

– resistance, Ohm

1275–1495

– output frequency, Hz

15–2000

– output tension, In

0,15

– air gap, mm

0,2–1,2
Hydraulic HECU block

– weight, kg

2,5

– engine

12 IN, 30 AND

– engine capacity, W

180

– productivity, cm 3/with

5,5

Adjusting data

Data
Value
Height of installation of a pedal of a brake, mm
170
Course of a pedal of a brake, mm
128
Gap of the switch of stoplights, mm
0,5–1,0
Free wheeling of a pedal of a brake, mm
3–8
Gap between a pusher of the vacuum amplifier of brakes and the main brake cylinder, mm
0
The course of the lever of the parking brake when tightening by its effort of 196 N
8 clicks
Minimum admissible thickness of overlays of front brake shoes, mm
2
Minimum admissible thickness of a brake disk, mm
22,4
Minimum admissible thickness of overlays of back brake shoes (drum brake), mm
1
The most admissible diameter of boring of the brake drum, mm
205,2
Minimum admissible thickness of a back brake disk, mm
8

Moments of an inhaling, N • m

Data
Value
Nuts of fastening of the main brake cylinder to an arm
8–12
Nuts of fastening of an arm of the main brake cylinder
13–16
The union of a vacuum hose to an air broad chamber
15–18
Pumping union
7–9
Connecting nuts of brake tubes
13–17
Bolt of fastening of the directing support finger
22–32
Bolts of fastening of a support to a rotary fist
65–75
Hollow bolt of fastening of a brake hose to a forward support
25–30
Bolts of fastening of the working brake cylinder
12–18
Forward sensor of frequency of rotation of a wheel
8,2–9,7
Back sensor of frequency of rotation of a wheel
8,2–9,7
Bolts of fastening of the control unit and hydraulic HECU block
8–10
Bolts of fastening of arms of the ECU control unit and hydraulic HECU block
9–10
Six brake tubes to the hydraulic block
13–17

At installation it is necessary to use new самоконтрящиеся nuts.

General information

On cars the working brake system with the hydraulic drive is used.

The system works as follows:

– the pedal of a brake is connected with the main brake cylinder;
– when the pedal is pressed, liquid under pressure from the main brake cylinder on metal tubes and flexible hoses is transferred to lobbies and back brake mechanisms;
– working brake cylinders represent hydraulic modulators which transform the liquid pressure created in the main brake cylinder to movement of elements of the brake mechanism;
– forward and back pistons of a support of a brake move and due to friction about brake disks and drums provide the required delay of the car;
– at a brake pedal otpuskaniye pressure in system decreases.

Brake shoes and pistons come back to a neutral or starting position and braking stops.

At reduction of level of brake fluid the liquid level sensor in the main brake cylinder includes a control lamp in combinations of devices. If the control lamp burns, first of all, check that the parking brake is released as the lamp indicates the lowered level of liquid and the tightened parking brake.