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
   Removal and installation of the top cover of the engine / lower protection of a motive compartment / stretcher
   Check of a compression in engine cylinders, identification of leaks
   Check of the engine by means of the vacuum gage
   - 4-cylinder petrol engines
      General information
      Removal and installation of a gear belt
      Removal and installation of a head of cylinders
      Removal and installation of a belt of the drive of auxiliary units
   + 6-and 8-cylinder petrol engines
   + 4-cylinder diesel engines
   + 6-cylinder diesel engines
   + engine Lubrication system
+ 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
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment

Removal and installation of a belt of the drive of auxiliary units

Scheme of laying of a belt of the drive of auxiliary units. 4-cylinder petrol engine

1 — Bolts, 25nm
2 — the Semi-automatic device of a tension of a gear belt
3 — Klinova a belt
4 — Bolts, 25nm
5 — the Holder of the generator, pump of the power steering and compressor of the conditioner
6 — Bolts, 40nm
7 — the Generator
8 — Screws, 20nm
9 — the Screw, 40nm
10 — the Bolt, 20nm

11 — the power steering Pump
12 — Bolts, 40nm
13 — the conditioner Compressor. At installation watch the directing plugs in openings
14 — Bolts, 20nm
15 — the Wheel of a cranked shaft. Installation is possible only in one situation: the adjusting opening of a wheel has to be over a ledge on a wheel of a gear belt
16 — Bolts with a fillet, 10nm + 90 °. Surely replace. Attention: It is allowed to apply only original bolts
17 — the Directing roller. It is fixed on the holder of the generator, pump of the hydraulic booster and the conditioner compressor
18 — the Special bolt of the directing roller, 25nm



  1. Mark with chalk or a felt-tip pen the direction of rotation on a maple belt.

Change of the direction of rotation of the belt which was already in work can lead to its break.

  1. Incline the tension device for weakening of a maple belt in the direction of an arrow on an accompanying illustration A.
  1. Fix the tension device T10060 mandrel (an arrow on an accompanying illustration B).
  1. Take off maple a belt.



  1. Check, whether all units (the generator, the compressor, the pump) are reliably installed.
  2. Put on maple a belt according to a tag of the direction of rotation.
  3. At cars with the conditioner in the last turn put on a belt the compressor.
  4. Incline the tension device in the direction of an arrow (In) a little and take out a lock finger (And). After that slowly return the tension device to a starting position. Thus check, whether the belt on pulleys correctly lies.
  5. Start the engine and let's it work on single turns. Visually check a belt.