Removal and installation of the left and right covers of driving chains. 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
2.3. 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)
2.8.1. Number of the engine
2.8.2. Removal and installation of a poliklinovy belt
2.8.3. Removal and installation of a damper of tortional fluctuations
2.8.4. Removal and installation of a forward sealing flange of the crankshaft with a crankshaft epiploon
2.8.5. Removal and installation of a two-mass flywheel (cars from the manual transmission)
2.8.6. Removal and a press fitting of the needle bearing of a two-mass flywheel (cars from the manual transmission)
2.8.7. Removal and installation of the conducted disk (cars with the automatic transmission)
2.8.8. Replacement of an epiploon of the crankshaft from the chain drive
2.8.9. Removal and installation of the left and right covers of driving chains
2.8.10. Removal and installation of the lower cover of a driving chain
2.8.11. Camshaft drive
2.8.12. Removal of the chain drive from cam-shafts, removal and installation of a natyazhitel of a chain
2.8.13. Removal and installation of a chain of the drive of the oil pump and balancer shaft
2.8.14. Removal and installation of the balancer shaft
2.8.15. Removal and installation of a bent shaft
2.8.16. Conrod and piston group
2.8.17. Check of a radial gap of rods
2.8.18. Check of a compression
2.8.19. Removal and installation of cam-shafts
2.8.20. Replacement of oil scraper caps
2.8.21. Check of basic elements with hydrocompensators
2.8.22. Check of the directing plugs of valves
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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2.8.9. Removal and installation of the left and right covers of driving chains

Fig. 2.322. Covers of driving chains: 1 – M6 – 9 N · m; M8 – 20 N · m; 2 – a crankshaft epiploon (from the chain drive); 3 – adjusting plug; 4 – lower cover of a driving chain; 5 – laying of the left head of the block of cylinders; 6 – · m + to tighten a bolt of 5 N on +90 ° (1/4 about.); 7 – left cover of a driving chain; 8 – · m + to tighten a bolt of 5 N on +90 ° (1/4 about.); 9 – right cover of a driving chain; 10 – laying of the right head of cylinders; 11 – adjusting plug



Removal
Remove back facing of the engine.

NOTE
After installation it is necessary again install all fasteners of cables removed or which are cut off at dismantle.

Remove forward facing of the engine.
Left cover of a driving chain
Turn off a broad tank of the cooling system.
Disconnect the shtekerny socket of the switch of a signaling device of low level of cooling liquid in the bottom of a broad tank and postpone a broad tank with the connected hoses 1 and 2 aside.

Fig. 2.323. Shtekerny sockets


Take electric shtekerny sockets 1 and 2 of the holder (fig. 2.323).
Put a plait of wires aside.
Turn off nuts and disconnect from a forward wall the left holder of shtekerny sockets.

NOTE
To enclose rags under the case of an oil filter to absorb the leaking engine oil.


Fig. 2.324. Cover of the case of an oil filter


Turn off a cover of the case of an oil filter (fig. 2.324).
Take a replaceable element of an oil filter.

Fig. 2.325. Collar of a hose of ventilation of a case


Remove a hose of ventilation of a case of the engine from a cover of the left GBTs (fig. 2.325).
Uncover the left GBTs and put aside together with the connected hose of ventilation of a case of the engine.

All cars
Disconnect shtekerny sockets.
Unscrew bolts and disconnect shtekerny sockets on ignition coils.
Put a plait of electric wires aside.

Fig. 2.327. Shtekerny sockets


Disconnect shtekerny sockets 1-3 (fig. 2.327).
Unscrew a nut.
Remove the holder of the shtekerny socket 3.
Unscrew the hairpin located under it.
Remove the holder of shtekerny sockets 1 and 2.

Fig. 2.328. Fastening of the left cover of a driving chain


Unscrew bolts 1–8 and remove the left cover of a driving chain (fig. 2.328).

Right cover of a driving chain

Fig. 2.329. Reducing valve


Disconnect the reducing valve 1 from an air hose (fig. 2.329).
Remove an air hose, for this purpose weaken a collar 2 and unblock clamps.
Take a pin of an expansion clip.

Fig. 2.330. Removal of the case of the air filter


Remove the case of the air filter (fig. 2.330).

Fig. 2.331. Shtekerny sockets


Turn off nuts and disconnect from a forward wall the right holder of shtekerny sockets 1 and 2 (fig. 2.331).
Disconnect shtekerny sockets.
Unscrew bolts and disconnect shtekerny sockets on ignition coils.

Fig. 2.332. Components of system of gas distribution: 1 – valve of 1 system of regulation of phases of gas distribution, release; 2 – Hall's sensor; 3 – potentiometer of the gate of an inlet collector; 4 – Hall's sensor 3



Put a plait of electric wires aside.
Disconnect the shtekerny socket 1.

Fig. 2.333. Shtekerny socket


Unscrew a bolt and remove an arm of the shtekerny socket (fig. 2.333).

Fig. 2.334. Fastening of the right cover of a driving chain


Unscrew bolts 1–8 and remove the right cover of a driving chain (fig. 2.334).

Installation
Remove the sealant remains on covers of driving chains and the block of cylinders (a head of the block of cylinders), for example, with the rotating brush nozzle with a plastic bristle.

NOTE
At the return installation establish all cable couplers where they were established initially.
For fastening of all connections of hoses use collars of the corresponding series.

ATTENTION
You watch that the remains of sealant did not get to the engine.

Clear landing surfaces; on them there should not be an oil and lubricant.
Cut off a tube nose on a forward mark (diameter an opening about 1 mm).

NOTE
Covers of driving chains have to be established within 5 min. after putting sealant.


Fig. 2.335. Laying of sealant on a landing surface of the left cover of the drive of a chain


Apply the sealant roller on a pure landing surface of the left cover of a driving chain, as shown in the figure 2.335.
The flute of a landing surface has to be filled with sealant.
The roller of sealant has to act over a landing surface on 1,5–2,0 mm.

Fig. 2.336. Order of an inhaling of bolts of fastening of the left cover of a driving chain


Establish the left cover of a driving chain and tighten bolts in the sequence of 1-8 (fig. 2.336).
Apply the sealant roller on a pure landing surface of the right cover of a driving chain, as shown in the figure 2.336.
The flute of a landing surface has to be filled with sealant.
The roller of sealant has to act over a landing surface on 1,5–2,0 mm.
Establish the right cover of a driving chain and tighten bolts in the sequence of 1-8 (fig. 2.334).
Further installation is carried out in the return sequence.
Check oil level.

Inhaling moments
* Replace bolts.
** 90 ° there correspond quarters of a turn.


2.8.8. Replacement of an epiploon of the crankshaft from the chain drive

2.8.10. Removal and installation of the lower cover of a driving chain