Hyundai Elantra

since 2000-2004 of release

Repair and car operation



Elantr's Hyundai
+ Petrol engines 1,6, 1,8 and 2,0 of l
+ Diesel engine of 2,0 l
+ greasing System
+ cooling System
+ Fuel system
+ Monitoring systems and decrease in toxicity of the fulfilled gases
+ ignition System
+ System of preliminary heating of the diesel engine
+ Coupling
+ Mechanical transmission
+ Automatic transmission
+ Power shafts, forward and back axes
+ Suspension bracket
+ Steering
- Brake system
   Specifications
   Check of the vacuum amplifier of brakes
   Check of the unilateral vacuum valve
   Pumping of hydraulic system of a drive of brakes
   Adjustment of a course of the parking brake
   Brake pedal
   Vacuum amplifier of brakes
   Main brake cylinder
   Replacement of forward brake shoes
   Support of a forward brake
   Back disk brakes
   Back drum-type brakes
   Replacement of the working brake cylinder
   Pressure regulator
   Brake tubes and hoses
   Parking brake
   Anti-blocking system of brakes (ABS)
   Hydraulic HECU block
   Sensor of frequency of rotation of a wheel
   Pumping of hydraulic system of a drive of brakes with scanner use
   Search and elimination of malfunctions
+ Body
+ air Central air
+ Electric equipment
Electric circuits



Brake system

Specifications

Data
Value
Main brake cylinder

– type

Tandemny

– diameter of the cylinder, mm

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

– type

The 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-type brakes

– internal diameter of a 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

– a consumed current, мА

80
Sensor of frequency of rotation of a wheel

– resistance, Ohm

1275–1495

– target frequency, Hz

15–2000

– target 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
Course of the lever of the parking brake at a tightening its effort of 196 N
8 clicks
Minimum admissible thickness of overlays of forward brake shoes, mm
2
Minimum admissible thickness of a brake disk, mm
22,4
Minimum admissible thickness of overlays of back brake shoes (drum-type brake), mm
1
The most admissible diameter of boring of a 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 the air broad chamber
15–18
Pumping union
7–9
Connecting nuts of brake tubes
13–17
Bolt of fastening of a directing finger of a support
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 a 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 pressure of liquid created in the main brake cylinder, to moving of elements of the brake mechanism;
– lobbies and back pistons of a support of a brake move and at the expense of a friction about brake disks and drums provide demanded delay of the car;
– at an otpuskaniye of a pedal of a brake 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 liquid the sensor of level of liquid 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.