Audi A4, S4
Introduction
Controls and receptions of safe operation
Current leaving and service
- The engine
   Specifications
   Removal and installation of the top cover of the engine / the bottom protection of an impellent compartment/stretcher
   Compression check in engine cylinders, revealing of leaks
   Check of the engine by means of the vacuum gauge
    4-cylinder petrol engines
    6 and 8-cylinder petrol engines
   - 4-cylinder diesel engines
      The general data
      Removal and installation of a gear belt, engines of 1.9 l (AVB, AWX, AVF)
      Натяжитель a belt with демпфированием a friction
      Removal and installation of a head of cylinders, diesel engines of 1.9 l (AVB, AWX, AVF)
      Removal and installation of a belt of a drive of auxiliary units
    6-cylinder diesel engines
    System of greasing of the engine
Systems of cooling, heating and the air conditioner
Power supply systems, release and decrease in toxicity of the fulfilled gases
Systems of an electric equipment of the engine
Manual box of a gear change
Automatic transmission
Coupling, power shafts and differential
Brake system
Suspension bracket and steering
Body
Onboard electric equipment




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

Belt of a drive of auxiliary units. The 4-cylinder diesel engine

1 — Krylchatka of the fan with вязкостной муфтой
2 — the Screw *, 10Нм
3 — Klinovoj a belt
4 — the Screw *, 10Нм 90
5 — the Pulley of a cranked shaft (демпфер крутильных fluctuations)
With — a rubber cover. Installation is possible only in one position.
6 — the Screw, 25Нм. At installation insert a sealing ring (12)
7 — the Screw, 25Нм
8 — the Lever of a tension roller
9 — the Remote plug. Observe installation position. Establish a sealing ring (12)
10 — the Tension roller
11 — the Bolt, 25Нм
12 — the Sealing ring. In the presence of damages replace
13 — the Bolt *, 25Нм
14 — the Generator
15 — the Tension element wedge a belt
16 — the Bolt, 25Нм
17 — the Adjusting plug. Check up correctness of installation in the holder

18 — the Holder. At installation watch that the right top plug has risen between the holder and the block of cylinders
19 — the Bolt, 45Нм. Observe sequence of an inhaling.
20 — the Bolt, 45Нм
21 — the Bolt, 25Нм
22 — the Support for the fan with вязкостной муфтой
23 — the Pressure head pipeline
24 — the Hollow bolt, 50Нм
25 — Sealing кольца*
26 — the hydraulic booster Pump
27 — the Bolt with a gear fillet *, 28Нм
28 — the Holder of a tension element
29 — the Pulley of the pump of the hydraulic booster of a wheel. For отворачивания it is necessary to keep оправкой
30 — the Bolt, 25Нм
31 — the Bolt, 25Нм
32 — the Pulley of the fan with вязкостной муфтой
33 — Vjazkostnaja муфта
*) Necessarily replace.

Order of a tightening of bolts of the holder

Bolts of the holder 18 are tightened in sequence with 1 on 6 in 2 receptions.

    1 reception: Bolts with 1 on 6 - by hand. 2 reception: Bolts with (1) on (6) - the moment 45Нм.

Removal

 PERFORMANCE ORDER

    Remove the bottom cover of an impellent compartment, address to Section Removal and installation of the top cover of the engine / the bottom protection of an impellent compartment/stretcher.
    Mark on клиновом a belt with a chalk or a felt-tip pen a direction of its rotation.

Change of a direction of rotation of the belt which was in work can lead to its rupture.

    Turn out bolts of fastening of a tension roller wedge a compressor belt (an arrow on an accompanying illustration) and thus ослабьте a belt.
    Remove wedge a compressor belt. Remove the top air line in a forward right part of an impellent compartment, address to Section Removal and installation of the top cover of the engine / the bottom protection of an impellent compartment/stretcher.
    Incline the tension device wedge a belt in an arrow direction on an accompanying illustration and thus ослабьте a belt.
    Remove wedge a belt and unload the tension device.

Installation

 PERFORMANCE ORDER

    Put on wedge a belt () pulleys of a cranked shaft (1), the pump of the hydraulic booster (2), a tension roller (3) and the fan with вязкостной муфтой (4).
    Incline the tension device wedge a belt in an arrow direction.
    In last turn put on wedge a belt a pulley of the generator (5) and unload the tension device. Put on wedge a belt () a pulley of a cranked shaft (1), the compressor (6) and the device of a tension (7).
    Establish dynamometer a key (), as is shown in an accompanying illustration, on шестигранник a tension roller (1) and tighten a tension roller the moment 30Нм.
    In this position tighten screws (2) moment 20Нм. Start the engine and check up visually belt work. Thus pay attention to correct position of a belt on pulleys.