Audi A4, S4

Since 2000 of release

Repair and car operation



Audi A4, S4
- Introduction
   About this Management
   Cars Audi A4/S4 - the summary
   Identification numbers of the car
   Acquisition of spare parts
   Technology of service, the tool and the workplace equipment
   Поддомкрачивание and towage
   Start of the engine from the auxiliary storage battery
   Automobile химикалии, oils and greasings
   Diagnostics of malfunctions
+ Controls and receptions of safe operation
+ Current leaving and service
+ 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



Automobile химикалии, oils and greasings

Cleaners

The cleaner for systems of injection and air заслонок represents strong solvent of pitches, a deposit and coal adjournment. The most part of cleaners leaves after itself greasing film of dry type which does not harden and not засмаливается eventually. In view of formation of such film the component is not recommended to use the given cleaners for washing electric.

The cleaner for brake systems is applied to removal of traces of greasing and a brake liquid from surfaces a component of brake system where absolute cleanliness is a paramount condition of efficiency of functioning. The cleaner does not leave any traces and in many cases eliminates the squeal of brake mechanisms caused by pollution their component.

The cleaner for electric a component promotes elimination окисных films, traces of corrosion and a deposit from contact surfaces without infringement электропроводности. Also it can be used for cleaning of spark plugs, jets, regulators of pressure and other knots where full clearing of oil and fat is desirable.

Влагопоглотители serve for removal of water and a moisture from surfaces such electric a component as the generator, a pressure regulator, a box of safety locks, electric sockets, etc. Vlagopoglotiteli usually are not current-carrying, not causing corrosion and not inflammable.

Обезжириватели represent superstrong solvents and serve for removal of traces of greasing from external surfaces of the engine and a chassis component. Are issued in the form of aerosols or are put by a brush or a brush and, depending on type, are washed off either water, or solvent.

Greasing liquids

Impellent oils represent specially developed structures for greasing internal an engine component. Usually contain wide any spectrum of the additives serving for prevention of foaming and corrosion. Impellent oils are issued various degree of viscosity - from 5 to 80. Necessity of application of oil of this or that grade is usually defined by environmental conditions and requirements of the concrete engine. Liquid (easy) oils are usually applied in the conditions of a frigid climate and at insignificant loadings on the engine. Heavy (viscous) oils are used in hot conditions and at the raised loadings on the engine. All-weather oils possess characteristics both easy, and heavy oils and usually have designations from 5W-20 to 20W-50.

Qualities of impellent oils

All-weather oils are rather inexpensive oils with following qualities:

– All-the-year-round use in temperate climate zones;

– Excellent washing properties;

– Good greasing ability at all temperatures and engine loadings;

– High stability of initial properties for a long time.

All-weather oils with the improved antifrictional qualities have, except that, additional advantages:

– All-the-year-round use almost at all possible temperatures of external air;

– Small losses of capacity of the engine on a friction;

– Simplification of cold start of the engine – even at very low temperatures.

Seasonal oils owing to specific vjazkostno-temperature properties inherent in them usually cannot be used all year long. Therefore these oils should be applied only in extreme climatic zones.

At use of all-weather oils of class SAE 5W-30, it is necessary to avoid long work of the engine with high frequency of rotation and constant big loading on the engine. These restrictions are not valid for all-weather oils with the improved antifrictional qualities.

Additives to impellent oils

It is not necessary to add any additives reducing losses on a friction, to impellent oils.

Adhere to a rule: always to use high-quality oil of one mark corresponding to the engine (on classification) and not to risk to mix it with same synthetic (or semisynthetic) oil. The engine will thank for it reliable work. Do not buy oil privately as packing is easy for forging.

Transmissionnoe oil is developed for application in differentials, transmissions, and other knots where stability to influence of heats is required.

Greasing for a component of the chassis and bearings of wheels represents the dense greasing applied in knots, subject to the raised loadings and a friction, such as bearings of wheels, spherical support of a suspension bracket, tips of steering draughts and карданные hinges.

High-temperature greasing for bearings of wheels is capable to resist to influence of the heats arising in bearings of wheels of cars, equipped with disk brake mechanisms. Usually contains дисульфид the molybdenum, being greasing substance of dry type.

White greasing (циатим) represents the dense greasing put on metal surfaces contacting among themselves in places where there are problems with the raised humidifying. Remains soft both at low, and at heats, it is not washed away and it is not diluted by water.

Assembly greasing represents special greasing, for application in the conditions of high pressures, usually contains molybdenum and is used for greasing of the knots subject to raised loadings (such as radical and шатунные bearings and working ledges of cams) before the first start of the engine after major repairs end.

Silicone greasings are applied to protection rubber, plastic, vinyl and nylon a component.

Graphite greasings serve for application there where oil cannot be used in a kind of problems with pollution (for example, in locks). Dry graphite perfectly greases metal details, preventing influence on them of a moisture, acids and other aggressive pollution. Greasing is electrowire and does not break contact in such knots, as, for example, the ignition lock.

Молибденсодержащие getting structures are applied to simplification отдавания "the become attached" fixture, and also for greasing of fixture in order to avoid its corrosion in the future.

Teploprovodnaja greasing is not electrowire and serves for installation of electronic blocks of ignition from which intensive heat removal is required.

Hermetics

Hermetic RTV is most widely applied прокладочным hermetic. It is made on the basis of silicon, stiffens on air, provides hermetic sealing, gluing, is waterproof, fills defects of surfaces, remains elastic, it is not compressed and does not sit down, it acts rather easily in film and applied in addition practically to all linings on knots where temperatures do not exceed average values.

Anaerobnyj hermetic unlike hermetic RTV can be applied not only in addition to linings, but also to formation of those. Remains elastic, it is steady against influence of solvents and well fills roughnesses of surfaces. The basic difference from hermetic RTV consists in hardening conditions. If hermetic RTV starts to stiffen after hit on air анаэробный hermetic rises only in absence of air. It means that hardening of such hermetic occurs only after assemblage a component and their dense pressing to each other.

Hermetic for pipes and carving connections is applied to hermetic sealing штуцерных connections of hydraulic, pneumatic and vacuum lines. It is usually made on the basis of teflon компаунда and it is delivered in the form of the aerosols put like a paint of liquids or in the form of a tape (ФУМ).

Химикалии

Antitaking компаунд serves for the prevention прикипания, corrosion, jamming and cold приваривания fixture. High-temperature antitaking hermetics usually are made on a basis медьсодержащих or graphite greasings and used in fixture of system of release and a final collector.

Анаэробные taking компаунды serve for prevention spontaneous отдавания fixture under the influence of vibrations and stiffen only after installation in absence of contact to air. Taking компаунды average capacity are applied to fixing of small fixture (nuts, bolts, screws) which are subject regular отдаванию further. High-power компаунды are usually used for blocking of large fixture, отдавание which it is not made on a regular basis.

Additives to oil serve for change of chemical properties of oil without change of its viscosity for the purpose of decrease in an internal friction in the engine. It is necessary to notice that the majority of the firms-manufacturers which are letting out engine oils, warn against use of any additives to them.

Additives to fuel carry out at once some functions, depending on the chemical compound. Usually contain the solvents promoting a conclusion of slags and removal of a deposit from internal surfaces and a component of system of injection of fuel and an inlet path. Besides, application of such additives promotes removal of the coal adjournment formed on walls of chambers of combustion. The structure of some additives includes the substances serving for greasing a component of the top part of a head of cylinders (клапанного the mechanism, piston rings), others promote removal of a condensate from walls of a fuel tank.

The other

The brake liquid - represents specially developed structure, capable to resist to influence of heats and the pressure arising in brake system. It is not necessary to suppose contact of a brake liquid to the painted surfaces of the car and open sites of a body. The brake liquid is poisonous. It is necessary to hold a brake liquid in tightly closed container in order to avoid hit in it of a moisture (a liquid very much гигроскопична) and a dirt.

During car operation the brake liquid takes away a certain quantity of water from air. Too big maintenance of water in a brake liquid can cause, finally, corrosion of details of working brake system. Besides, thus the temperature of boiling of a brake liquid essentially goes down.

Therefore it is necessary to change time in two years a brake liquid!

At very old brake liquid it is possible, at the big loading on working brake system, occurrence of vials of steam in system. It negatively influences an overall performance of working brake system and, thereby, on traffic safety.

It is necessary to apply only the recommended brake liquid.

Glue for fastening of sealing strips кузовных apertures as it is clear from its name, serves for fastening of sealing strips of apertures of doors, windows and covers of luggage spaces. It can be applied to fixing of elements of internal furnish.

Anticorrosive coverings for the car bottom represents гудронообразный the structure made on an oil basis, and serves for a sheeting of metal surfaces, preventing their corrosion. Besides, carries out function of sound insulation of salon.

Воски and polyroles are applied to protection of the painted surfaces against environment influences. Use of various type восков and polyroles can demand various type of a paint. The structure of some polyroles includes the abrasive or chemical additives serving for removal of an external layer of oxides (tarnishing) from painted surfaces of old cars. Recently in the market are widely presented any polyroles not containing wax which structure includes set of chemical additives, such as polymers or substances on a silicon basis. Such polyroles usually are put and keep longer usual (wax) is easier.