Repair and service Audi A8 in body D2 with 1994 for 1999 of release.
1. Car operation
2. Maintenance service
3. Petrol engines of 2,8 l
3.1. The general data
3.2. Removal and engine installation
3.3. A poliklinovoj belt
3.4. Гаситель fluctuations
3.5. Replacement of a gear belt
3.6. A two-mass flywheel
3.7. A frictional overlay
3.8. The gauge of frequency of rotation of the engine
3.9. A cranked shaft
3.10. Pistons and rods
3.11. An inlet collector
3.12. The left cover of a head of the block of cylinders
3.13. The right cover of a head of the block of cylinders
3.14. A head of the block of cylinders
3.15. A camshaft
3.16. Check of hydraulic pushers of valves
4. Petrol engines of 3,7 and 4,2 l
5. Diesel engines of 2,5 l
6. Diesel engines of 3,3 l
7. Systems of ignition and injection of fuel of petrol engines
8. System of release of the fulfilled gases of cars with petrol engines
9. The power supply system of diesel engines
10. System of prestarting heating of diesel engines
11. System of release of the fulfilled gases of cars with diesel engines
12. Greasing system
13. Cooling system
14. Coupling
15. A transmission
16. Shaft of a drive of forward wheels
17. Features of a design of transmission of all-wheel drive cars
18. A suspension bracket
19. Wheels and tyres
20. A steering
21. Brake system
22. A body
23. Heating and air-conditioning system
24. An electric equipment
25. Electric schemes


3.1. The general data

On cars establish six-cylinder V-shaped engines with liquid cooling. The engine have in a motor compartment it is longitudinal. Engine cylinders are cast from grey pig-iron for a single whole with the block of cylinders. Heads of the block of cylinders are made of an easy alloy and fasten to the block of cylinders bolts. In a head of the block of cylinders запрессованы steel directing plugs of valves and a saddle of valves. To the bottom part of the block of cylinders of the engine the oil pallet in which flows down the oil necessary for greasing and cooling of the engine fastens.
In engines the scheme of a cross-section stream at which топливовоздушная the mix arrives in engine cylinders on the one hand the engine is used, and the fulfilled gases leave on the other hand the engine. At such design of the engine filling of cylinders топливовоздушной a mix and removal of products of combustion considerably improves.
On each section of the block of cylinders the separate head with a camshaft is established. Camshafts are put in action by a gear belt. Backlashes in valves are regulated automatically with use of hydraulic pushers, therefore while in service manual adjustment is not required.
For oil giving to rubbing surfaces the oil pump located in a forward cover of a cranked shaft and put in action from a cranked shaft serves in the engine. Under pressure oil moves on channels to bearings of cranked and distributive shaft.
The water pump is located in a forward part of the engine and put in action by a gear belt. Keep in mind that the system of cooling of the engine should be filled all year long by a mix of antifreeze and water with the low maintenance to exhaust.
Preparation and ignition топливовоздушной mixes in engine cylinders is carried out by a control system of the engine which does not demand adjustments while in service. The corner of an advancing of ignition and frequency of rotation of idling are regulated by a control system of the engine. At maintenance service carrying out it is necessary to replace spark plugs and filtering element of the air filter.

The prevention
The radiator fan can join after a stop of the engine and ignition deenergizing, therefore at work on the hot engine be careful. That the radiator fan has not joined, disconnect an electric socket from the electric motor of the fan of a radiator.

3. Petrol engines of 2,8 l

3.2. Removal and engine installation