Check of a tension and existence of damages (V6 TDI), adjustment of a tension of a gear belt of the TNVD drive. Audi A4 (from 2001 to 2005 release)
Service of Audi A4 from 2001 to 2005 release.
1. Operation and maintenance of the car
2. Engine
2.1. General information
2.2. Predvaritlny checks
2.2.1. Visual check on existence of untight sites and damages to a motor compartment
2.2.2. Cleaning of the case and replacement of the filtering element of the vzdushny filter
2.2.3. Check of a tension and existence of damages of a gear belt of the drive of cam-shafts (V6TDI engines)
2.2.4. Check of a tension and existence of damages (V6 TDI), adjustment of a tension of a gear belt of the TNVD drive
2.2.5. Replacement of spark plugs
2.2.6. Check and, if necessary, refueling of cooling liquid
2.2.7. Removal of a cover of a motor compartment
2.2.8. Replacement of the fuel filter (TDI engines)
2.3. Mekhanichsky part (petrol engines 2,0l)
2.4. Lubrication system
2.5. Cooling system
2.6. System of injection
2.7. System of production of the fulfilled gases
2.8. Mechanical part (petrol engines 3,0; 3,2 l)
2.9. Mechanical part (petrol engines of 4,2 l)
2.10. Mechanical part (diesel engines of 2,0 l)
2.11. Tables
3. Transmission
4. Running gear
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
8. Body
9. Schemes of electric equipment
 







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2.2.4. Check of a tension and existence of damages (V6 TDI), adjustment of a tension of a gear belt of the TNVD drive

Remove a protective cover of the engine.
Remove the top protection of a gear belt.
Check a condition of a gear belt regarding existence on it the following damages:
– cracks, cross breaks;
– stratification (belt framework, кордшнур);
– development of a framework of a belt;
– istrepannost of a kordshnur;
– superficial cracks (plastic covering);
– existence of traces of oil and lubricant.

ATTENTION
The found damages are subject to obligatory elimination.

Check a tension of a gear belt of the pump TNVD.

Fig. 2.8. Tags of a tension of a gear belt


Tags 1 and 2 have to be opposite to each other (fig. 2.8).
If tags do not coincide, pull a gear belt.
Discharge and pumping out of engine oil, replacement of an oil filter

ATTENTION
On separate modifications of the engine pumping out of oil is forbidden.

NOTE
You make replacement of oil at its operational temperature.

4-tsit. petrol engines

Fig. 2.9. Case of an oil filter


Weaken an oil filter by means of a key for removal of the filter or a tension tape (fig. 2.9).
Remove an oil filter.
Observe instructions on installation of an oil filter.
Turn off a drain bolt or pump out engine oil.
Clear the surface of the filter adjacent to the engine.
Slightly oil rubber laying.
Screw in and tighten the new filter.

Fig. 2.10. Hoses of the oil heater



ATTENTION
After replacement of the boss of an oil filter check passability of hoses from the oil heater to boundary structural elements, if necessary modify position of the oil heater (fig. 2.10).

Screw up a drain bolt with new ring consolidation.
Fill in engine oil.
Inhaling moment: the drain bolt, 4-tsit. petrol engines – 30 N · m

Engines with OG turbocharger
At the first start of the engine after replacement of engine oil and an oil filter, consider below-mentioned factors.
Until in a combination of devices the control lamp of pressure of oil burns, the engine has to work only at single turns. Do not add gas. Addition of gas can cause damage or failure of a turbocharger.
Only after the control lamp will go out, the necessary pressure of oil is reached and it is possible to add gas.

6-tsit. petrol BBJ and ASN engines
Weaken an oil filter by means of a tension tape.

Fig. 2.11. Case of an oil filter


Remove an oil filter (fig. 2.11).
Observe instructions on installation of an oil filter.
Twist a drain bolt or pump out engine oil.
Clear the surface of the filter adjacent to the engine.
Slightly oil rubber laying.
Screw in and tighten the new filter.

ATTENTION
After replacement of the boss of an oil filter check passability of hoses from the oil heater to boundary structural elements, if necessary modify position of the oil heater (fig. 2.10).

Screw a drain bolt with new ring consolidation.
Fill in engine oil.
Inhaling moment: the drain bolt, 6-tsit. petrol engines – 30 N · m

Engines with OG turbocharger
At the first start of the engine after replacement of engine oil and an oil filter, consider below-mentioned factors.
Until in a combination of devices the control lamp of pressure of oil burns, the engine has to work only at single turns. Do not add gas. Addition of gas can cause damage or failure of a turbocharger.
Only after the control lamp will go out, the necessary pressure of oil is reached and it is possible to add gas.

4-tsit. FSI/TFSI engines
Remove antinoise isolation.

NOTE
Before removal of an oil filter merge from it engine oil to avoid hit of oil on the engine and hinged elements.


Fig. 2.12. Components of an oil filter


Unscrew a protective cap of the valve at the bottom of 1 (fig. 2.12).
Disconnect a hose with a spherical head from the adapter for discharge of oil and screw in a carving bolt in the valve at the bottom of the case of an oil filter 2 to easy resistance.
Then connect a hose with a spherical head to a carving bolt and screw in the adapter for oil discharge against the stop, at the same time the distinct click of the drain valve will be heard.
Let's work to an oil filter empty.
Unscrew the adapter for oil discharge.

Fig. 2.13. Valve of an oil filter


Check compliance of the valve to 1 situation shown in the figure 2.13 and lack of its distortion.
Screw a protective cap.
Open the case of an oil filter 2 by means of a key for filters or a replaceable face head of SW 36, for example SW 36 nozzle, and remove an oil filter.
Replace the filtering element 4 and ring consolidation of 3 (fig. 2.12).

Fig. 2.14. Service ledge of a cuff


Observe the provision of a service ledge of a cuff (see an arrow in the figure 2.14)
Clear the surface of the filter adjacent to the engine.
Slightly oil rubber laying.
The smooth party of a cuff has to be turned outside.
Screw in and tighten the filter case.
Screw a drain bolt with new ring consolidation.
Fill in engine oil.
Inhaling moment:
– an oil filter – 25+5 N · m;
– a drain bolt – 30 N · m.

4-tsit. diesel TDI engines about the pump nozzles
Remove antinoise isolation.

NOTE
Before merging or pumping out engine oil, weaken a cover in order that oil could follow from the case of an oil filter freely.

Weaken a cover 1 for an oil filter by means of a key.
Unscrew a drain bolt or pump out engine oil.

Fig. 2.15. Components of an oil filter


Replace ring consolidation and the filtering element (fig. 2.15).
Tighten a cover by means of a key for removal of an oil filter.
Screw up a drain bolt with new ring consolidation.
Fill in engine oil.
Inhaling moment:
– a drain bolt – 30 N · m;
– a cover – 25 N · m.

6-tsit. Petrol engines 3.2 FSI
Remove a tank 1 and to put it aside.

NOTE
Before merging or pumping out engine oil, weaken a cover in order that oil could follow from the case of an oil filter freely.


Fig. 2.16. Location of an oil filter


Unscrew a cover of an oil filter by means of a face head of 2 (fig. 2.16).
Clear adjacent surfaces of a cover and the case of an oil filter.
Replace the filtering element. 1.
Establish and slightly oil ring consolidations 2.
To insert the filtering element into a cover of an oil filter.

Fig. 2.17. Components of an oil filter


Establish a cover of an oil filter 3 (fig. 2.17).
Install a tank.
Remove antinoise isolation.
Open a drain bolt of the oil pallet or pump out engine oil.
Close a drain bolt.
Fill in engine oil.
Inhaling moment:
– a cover of an oil filter – 25 N · m;
– a drain bolt of the oil pallet – 30 N · m.

NOTE
Ring consolidation for a drain bolt is not provided.

6-tsit. diesel TDI engines
Weaken a cover 1.

NOTE
Before merging or pumping out engine oil, weaken a cover in order that oil could follow from the case of an oil filter freely.


Fig. 2.18. Components of an oil filter


Replace ring consolidations 2 and the filtering element 3 (fig. 2.18).
By means of the device pump out the remained oil from the filter case.
Turn off a drain bolt or pump out engine oil.
Screw a drain bolt with new ring consolidation.
Tighten a cover 1 by means of a face head.
Fill in engine oil.

Inhaling moments

8-tsit. Petrol engines 4.2 MPI
Uncover the engine, having pulled it up.

Fig. 2.19. Cover of an oil filter


Weaken a cover of an oil filter by means of a face head (fig. 2.19).
Take out the filtering element.

NOTE
At extraction of the filtering element the valve opens and oil automatically flows down in a case.


Fig. 2.20. Components of an oil filter


Replace ring consolidations 2 and the filtering element 3 (fig. 2.20).
Tighten a cover.
Turn off a drain bolt or pump out engine oil.
Screw a drain bolt with new ring consolidation.
Fill in engine oil.
Inhaling moment:
– a cover of an oil filter – 25 N · m;
– a drain bolt – 50 N · m.

8-tsit. Petrol engines 4.2 FSI (RS4)
Uncover the engine, having pulled it up.

Fig. 2.21. Fuel tube and bolts of fastening


Turn off bolts 1i take out a tube 2 of a clip (fig. 2.21).
Remove an arm aside.

Fig. 2.22. Untwisting of a cover of an oil filter


Turn off a cover of an oil filter by means of a face head (fig. 2.22).
Take out the filtering element

NOTE
At extraction of the filtering element the valve opens and oil automatically flows down in a case.

Replace ring consolidations 2 and the filtering element 3 (fig. 2.20).
Tighten a cover (fig. 2.19).
Turn off a drain bolt and merge engine oil.
Screw a drain bolt with new ring consolidation.
Fill in engine oil.

NOTE
Do not pump out engine oil.

Inhaling moment:
– a cover of an oil filter – 25 N · m;
– a drain bolt – 25 N · m.


2.2.3. Check of a tension and existence of damages of a gear belt of the drive of cam-shafts (V6TDI engines)

2.2.5. Replacement of spark plugs