15.1. Specifications
Specifications
Data
|
Value
|
Main brake cylinder | |
|
Tandem
|
|
|
|
22,22
|
|
23,81
|
Vacuum amplifier of brakes | |
|
Vacuum
|
|
|
|
228,6
|
|
177,8–203,2
|
|
|
|
5,5:1
|
|
6,0:1
|
Pressure limiter |
4DR 5DR
|
|
2,55 3,9
|
|
0,27:1 0,32:1
|
Forward brakes | |
|
Disk, ventilated
|
|
257
|
|
24
|
|
11
|
|
54
|
Back disk brakes | |
|
258
|
|
10
|
|
9
|
Back drum brakes | |
|
203,2
|
|
9,4
|
|
405
|
Parking brake |
Mechanical, influencing back wheels
|
Anti-blocking system of brakes
Data | Value |
ECU control unit
|
|
|
10–16
|
|
– 40 … 110
|
Control lamp: ABS, EBD
|
|
|
12
|
|
80
|
Sensor of frequency of rotation of a wheel
|
|
|
1275–1495
|
|
15–2000
|
|
0,15
|
|
0,2–1,2
|
Hydraulic HECU block
|
|
|
2,5
|
|
12 IN, 30 AND
|
|
180
|
|
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.