Audi A4, S4

Since 2000 of release

Repair and car operation



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
      The basic data
      Replacement of a gear belt of drive ГРМ
      Removal and installation of a head of the block of cylinders
      Removal and installation of a belt of a drive of auxiliary units
   + 4-cylinder diesel engines
   + 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



6 and 8-cylinder petrol engines

The basic data

Engines DOHC 2.4, 3.0, 4.2 l - V-shaped, with a corner of an arrangement of cylinders 90 , accordingly on 3 and 4 cylinders abreast. Such engines are designated V6 and V8.

Engines have three inlet and two final valves on the cylinder. Each number of cylinders of the engine has on 2 camshafts. At engine V6 camshafts of final valves are set in motion by a gear belt, camshafts of inlet valves are set in motion by a chain from camshafts of final valves. At engine V8 four camshafts, also as well as auxiliary units, are set in motion by several chains. Privodnye chains are located from outside a flywheel (the check point party).

The block of cylinders, коленвал and engine V6 flywheel

1 — the Cranked shaft
Check axial люфта:
The new: 0.07 - 0.23 mm
Deterioration limit: 0.25 mm
Check of a radial backlash by means of Plastigage: 0.018 - 0.045 mm
Deterioration limit: 0.10 mm
Attention: At check of a radial backlash do not rotate a cranked shaft.
2 — the Cover of the radical bearing 4 with dredging for a persistent washer
3 — the Bolt. Replace, 60Нм+90 . For measurement of a radial backlash tighten a bolt effort no more 60Нм
4 — the Persistent washer of the radical bearing 4
5 — the Flywheel/privodnoj a disk

6 — the Bolt of a flywheel/privodnogo of a disk. Replace, (a flywheel 60Нм+180 ), (приводной a disk 60Нм+90 ). At отдавании use the tool 3242 for blocking of a cranked shaft
7 — Loose leaves of radical bearings. Do not mix the removed loose leaves
8 — the Tight flange with an epiploon. It is replaced in gathering. Before removal merge cooling liquid
9 — the Lining. Replace
10 — the Bolt, 10Нм
11 — the Persistent washer of the block of cylinders, the bearing 4
12 — the Bolt, 25Нм. Preliminary tighten by hand before to tighten bolts of a cover of the radical bearing
13 — the Block of cylinders
14 — the Directing plug

Basic elements of drive ГРМ of engine V6

1 — the Bolt, 55Нм
2 — Natjazhitel of a gear belt. Before removal block by means of the tool 3204
3 — the Top right cover of a gear belt
4 — the Central right cover of a gear belt
5 — the Gear belt. Before removal mark a direction of movement of a belt. Check up on deterioration. Do not bend
6 — the Top left cover of a gear belt
7, 8 — the Bolt, 25Нм
9 — the Washer
10 — the bearing Plug
11 — the Tension roller of a gear belt
12 — the Tension lever
13 — the Sealing ring
14 — the Bolt, 25Нм
15 — the Arm
16 — Connection (the thermostat case)
17 — the Water pump
18 — the Oil pump

19 — the Head of cylinders
20 — the Case сапуна картера
21 — the Block of cylinders
22 — the Bolt, 45Нм
23 — the Arm
24 — the Pallet картера
25 — the Directing roller
26 — the Bolt, 45 Nanometers
27 — the Cogwheel коленвала
28 — the Bolt 200Нм+180 , replace
29 — Natjazhitel of a belt
30 — the Bolt, 10Нм. Establish with greasing D6
31 — a fan Pulley
32 — Bolt М8 - 25Нм, М6 - 10Нм
33 — the Cover of a gear belt
34 — the Bolt, 10Нм
35 — Dempfer крутильных fluctuations
36 — the Bolt, 25Нм

Chain drive of a cam-shaft of inlet valves. Engine V6


1 — the Top right cover of a gear belt
2 — the Central right cover of a gear belt
3 — the Top left cover of a gear belt
4 — Shestigrannaja a nut, 10Нм
5 — the Back cover of a gear belt
6 — the Elevating eye
7 — the Bolt, 25Нм
8 — the Lining of a cover of a head of cylinders. At damage replace. Before installation grease a lining surface between a cover of the bearing and a head of cylinders greasing D 454 300 A3
9 — the Cover of a head of cylinders

10 — the Lining
11 — the Cover. At damage a lining replace
12 — the Arm
13 — Shestigrannaja a nut, 10Нм. Tighten in a direction from the centre outside
14 — the Bolt of a head of cylinders. Replace
15 — the Head of cylinders. Check up planeness
16 — Maslootrazhatel
17 — the Lining of a head of cylinders (metal). Replace
18 — the Cogwheel of a cranked shaft
19 — the Tightening plate
20 — the Bolt, 55Нм

Elements of a head of cylinders. Engine V6

1 — the Double cover of bearings. Slightly grease an interfaced surface with greasing AV 174 004 01
2 — the Bolt, 10Нм
3 — Covers of bearings of a camshaft of final valves. Slightly grease interfaced surfaces of extreme (external) bearings with greasing AV 174 004 01
4 — the Camshaft of final valves. Check of a radial backlash by means of Plastigage:
Palpation, no more: 0.01 mm
Deterioration limit: 0.10 mm
5 — the Cap. Replace. For removal uncover the bearing. At the established cover of the bearing напрессуйте by means of the tool 3202 and a plastic hammer
6 — Covers of bearings of a camshaft of inlet valves
7 — the Camshaft of final valves
8 — a camshaft Regulator. Before removal block by means of a clamp 3366 натяжителя chains. Check up camshaft adjustment
9 — Privodnaja a chain. Before removal mark a movement direction
10 — the Bolt, 10Нм
11 — the Sealing ring. Replace
12 — the Valve 1 or 2 for adjustment of camshaft N205 or N208. Check up camshaft adjustment

13 — the Lining (rubber/metal). Replace
14 — the Segment insert. Replace
15 — the Hydraulic pusher of the valve. Do not interchange the position of pushers of different valves. Store downwards a surface of contact to a camshaft cam
16 — Crackers of the cutting lock
17 — the Holder клапанной springs
18 — Klapannaja a spring
19 — Maslootrazhatelnyj a cap
20 — the Rod of a pusher of the valve
21 — the Head of cylinders
22 — Valves
23 — the Epiploon. Slightly grease epiploon sponges
24 — Zaslonka CMP
25 — the Conic washer
26 — the Bolt, 25Нм
27 — the Gauge of position of a camshaft (CMP)
28 — the Bolt, 10Нм
29 — the Directing plug