Audi A4, S4

since 2000 release

Repair and operation of the car


Audi A4, S4
+ Introduction
+ Governing bodies and methods of safe operation
+ Current leaving and service
+ Engine
+ Cooling systems, heating and air conditioner
+ Power supply systems, release and decrease in toxicity of the fulfilled gases
+ Systems of electric equipment of the engine
+ Manual box of gear shifting
+ Automatic transmission
+ Coupling, power shafts and differential
- Brake system
   Specifications
   Removal of air from brake system
   Removal and installation of front brake shoes
   Removal and installation of blocks of brake mechanisms of back wheels
   Check of thickness of a brake disk
   Removal and installation of a brake disk / support
   Adjustment of the parking brake
   Removal and installation of the switch of a stoplight
   Removal and installation of a brake hose
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment





Specifications

Separate characteristics are provided also in the text of the Head and in case of obligation of their performance are highlighted in bold type

General parameters

Characteristic

Value

Design

Hydraulic, double-circuit with diagonal division and the vacuum amplifier. Electronic antistrange system (stability stabilization - ESP), the amplifier of the emergency braking (BAS) and system of anti-blocking of brakes (ABS)

Brake mechanisms

The disk

Forward supports

FN3, S54 or FNR-G60

Back supports

C38 or C43

Forward brake mechanisms

Characteristic

Value

General thickness of brake shoes, mm

14

Limit of wear of slips, mm

2 – 3

Diameter of a brake disk, mm

  • FN3

288

  • C54

280

  • FNR-G60
323

Thickness of the ventilated brake disk / Limit of wear, mm

  • FN3
25/23
  • C54
22/20
  • FNR-G60
30/28

Thickness of an integral brake disk / Limit of wear, mm

  • FN3
15/13
  • C54
13/11

Back brake mechanisms

Characteristic

Value

General thickness of brake shoes, mm

  • C38

17 (16)

  • C43

17.5

Limit of wear of blocks, mm

  • C38

7

  • C43
8

Diameter of a brake disk, mm

  • C38
245 (255)
  • C43
300

Thickness of a brake disk, mm

  • C38
10 (12)
  • C43
20

The parking brake, with the drive on back wheels

Diameter of the vacuum amplifier, mm

Efforts of a tightening of threaded connections, H · m

The moments of a tightening of fixture are given also in the text of the Head and on some illyustratsiyakh*.

* The moments of a tightening highlighted in the text in bold type are subject to exact observance; the efforts which are not highlighted in bold type are given only approximately

Characteristic

Value

Support forward to a bracket

  • Teves FN3

25

  • Lucas C54

30

Two-piston support

25

FNR-G60 support

30

Support back to a bracket

35

Bracket to a nave of a forward wheel

190

Bracket to a nave of a back wheel

75

Back plate to a nave of a back wheel

10

ABS sensors

10

Bolts of wheels

120