7.3.4. Cars with 8-cylinder engine MPI of 4,2 l – Audi S4

Disconnect a weight wire in the accumulator at the switched off ignition.

Pump out hydraulic oil from capacity of hydrosystem of a steering by means of the adaptation for откачки oils.

ATTENTION At opening of a broad tank with a cooling liquid there can be hot steam or a hot cooling liquid; cover a cover with rags and open cautiously.

Open a cover of a broad tank of a cooling liquid.

Remove the right forward wheel.

In cars with an independent heater unscrew screws of an exhaust pipe of an independent heater and an additional heater on шумоизоляционном the screen.

Fig. 7.18. Fastening forward шумоизоляционного the screen

Release screws or quick disconnect clamps 1 and 2 and remove forward шумоизоляционный the screen (fig. 7.18).

Fig. 7.37. The right air line

Remove the right air line before an additional radiator (fig. 7.37).

Fig. 7.38. The left air line

Remove the left air line before an additional radiator (fig. 7.38).

Substitute the pallet for service cranes or under the engine.

Fig. 7.39. A stopper маслосливного apertures of the case of the thermostat

Unscrew a stopper маслосливного apertures from the case of the thermostat and merge cooling liquid from the engine (fig. 7.39).

Fig. 7.40. The bottom hose of a radiator

Pull out a hose of a cooling liquid below from a radiator and merge the remained cooling liquid (fig. 7.40).

Establish the adaptation for откачки oils

Fig. 7.41. Hydraulic branch pipes of a hose of cooling behind on a radiator framework

Disconnect the hydraulic branch pipes going to a hose of cooling behind on a framework of a radiator (arrow) (fig. 7.41).

Fig. 7.27. The right safety cover in a motor compartment

Uncover 1 on the right in a motor compartment (fig. 7.27).

Unscrew screws (arrows).

Fig. 7.28. Air line removal

Remove the electromagnetic valve of 1 absorber 1 from an air line (fig. 7.28).

Remove an air line 2.

Fig. 7.42. The top hose of a radiator

Disconnect a hose of a cooling liquid from above from a radiator (fig. 7.42).

Fig. 7.43. The left safety cover in a motor compartment

Uncover 1 at the left in a motor compartment (fig. 7.43).

Pull out electric sockets 1 and 2 of the holder and to separate them.

Fig. 7.44. Electric sockets of a radiator

To liberate the wires going to a framework of a radiator (fig. 7.44).

Fig. 7.45. An electric socket of a headlight

Disconnect a socket of headlights on the left and right parties of the car (fig. 7.45).

Fig. 7.46. Electric разъемдатчика safety pillows

Disconnect a socket of gauges of a pillow of safety at the left and on the right on a radiator framework (fig. 7.46).

To liberate wires.

Disconnect a cowl cable in front from a radiator framework.

Fig. 7.47. An electric socket of the right fan

Disconnect a socket of the right fan (fig. 7.47).

Fig. 7.48. Radiator air lines

Turn off the left and right air lines from a radiator (arrow) (fig. 7.48).

Fig. 7.49. The gauge of external temperature

Unblock the gauge of external temperature 1 of the holder and to liberate wires (fig. 7.49).

Turn off a hose of cooling of hydraulic oil of hydrosystem of a steering (arrow).

Fig. 7.50. An arm of the block of management of the fan

Turn off the block of management of the fan of a cooling liquid from a radiator (fig. 7.50).

ATTENTION It is forbidden to open a contour of a coolant of a central air.

THE NOTE To avoid condenser damages, and also highways and coolant hoses, it is necessary to watch that highways and hoses have been laid without a tightness, excesses and breaks.

Fig. 7.51. The gauge of a high pressure and condenser fastening

Disconnect a socket of 1 gauge of a high pressure (fig. 7.51).

Unscrew screws (arrows).

Remove the condenser and incline downwards together with the connected lines and the established block of management of the fan of a cooling liquid.

Unscrew bolts (arrows) at the left and on the right on a radiator framework.

Fig. 7.52. Fastening of a sealant of a cowl

Remove a sealant of a cowl of the engine on a framework of a radiator and along the edges of a wing (fig. 7.52).

Fig. 7.53. Fastening damperа

Unscrew screws on (arrow) bumpers at the left and on the right (fig. 7.53).

THE NOTE The assistant is necessary for removal of a framework of a radiator.

Remove a framework of a radiator and to set aside aside, having protected from overturning.

Remove шланговый a collar 2 and disconnect a hose of a cooling liquid from a branch pipe on the right.

Fig. 7.54. Collars of a hose of a cooling liquid

Turn off шланговые collars 1 and disconnect a hose of a cooling liquid (fig. 7.54).

THE NOTE For the best representation operation is shown at the dismantled engine.

THE NOTE Before removal semi wedge a belt note a direction of its movement by a chalk or a felt-tip pen. Movement of the belt which in the opposite direction already was in the use can lead to its rupture.

Fig. 7.55. The tension screw semi wedge a belt

Unscrew the tension screw (fig. 7.55).

Remove полиwedge a belt from a generator pulley.

Fig. 7.56. Fastening of a tension roller

Remove a tension roller (arrows) (fig. 7.56).

Unscrew screws (arrows).

Fig. 7.57. Generator fastening

Remove the generator from an arm and to pull forward (fig. 7.57).

THE NOTE If the generator gets jammed in an arm, again screw the fixing screw to 2 turns.

Cautiously knock with the flat party of a hammer on heads of screws – thanks to it plugs of fastening of the generator will be released.

Disconnect a hose of a cooling liquid 3 from the generator.

Fig. 7.58. A hose of a cooling liquid and power supplies socket

Disconnect a socket 1 (fig. 7.58).

Turn off an electric wire 2 from the generator.

Remove the generator.

Establish in return sequence.

THE NOTE For fastening of all connections of hoses to use collars of a corresponding series. For simplification of installation of the generator of the plug of lock screws отодвиньтенемного back.

THE NOTE It should facilitate a course of plugs of fastening of the generator as otherwise the effort of a clip of the plug, despite a corresponding twisting moment, is not enough.

Fig. 7.59. A course semi wedge a belt: 1 – the generator; 2 – полиwedge a belt; 3 – обгонный a roller; 4 – гаситель fluctuations; 5 – a tension roller

Pay attention to correctness of landing and a course semi wedge of a belt (fig. 7.59).

Fig. 7.60. A tightening of the screw of a tension roller

Dinamometrichesky key impose on шестигранник a tension roller and preliminary to pull with the moment 70 Нм (fig. 7.60).

Simultaneously tighten the tension screw the moment 22 Нм.

Establish a framework of a radiator with hinged details.

Establish a forward overlay of a bumper.

Before the first start of the engine fill in hydraulic oil in capacity of hydrosystem of a steering, лопастной the pump should not work dry.

Connect the accumulator.

Start the engine and check up a belt course.

Fill in cooling liquid.

Branch pipes of a cooling liquid to the generator: 9 Нм.

The plug 30/B + to the generator: 16 Нм.

The generator to the engine: 22 Нм.

Tension roller to the engine: 22 Нм.