Mercedes S-Class W-140

In 1991-1999 editions

Repair and enterprise of the car



Mercedes S-Class
+ Mercedes Benz cars of the class S (W-140)
+ Operation manual
- Routine maintenance
   Specifications
   Active system of the prevention to entrance term systematically THAT (ASSYST)
   Planned schedule of routine maintenance
   General information on vote
   Check of levels of liquids, control of a vytecheniye
   Check of a condition of tires and pressure in them, the name of tires and Disks of wheels, rotation of wheels
   Compensation of engine oil and fat filter
   Check of the brake system
   Check of system of fuel, compensation of the filter for fuel
   Check of a state and compensation of hoses of motor office, localization of a vytecheniye
   Check of a condition of ridge serpantinnogo belts of an incentive of auxiliary devices
   Check of functioning of the cooling system and frost resistance of the cooled liquid, compensation of liquid
   Check of a condition of system of the edition of the working gases
   Check of the ATF level, compensation of the AT filter
   visuale check of density of automatic transmission
   Check of a condition of the Aufhängung components and management
   Check of a condition of protective caps of power shafts
   Check of the air conditioning system
   Lubricants of limiters of doors and cylinders of locks
   visuale control of a seat belt and block of an inflatable safety cushion
   Check of operability of searchlights and klaksona
   Check of a state, regulation and compensation of brushes of screen wipers
   Check of a condition of the battery, its leaving and loading
   Compensation of salonnogo of the filter
   Compensation of brake fluid
   Check and compensation of spark plugs, check of a condition of high-voltage lines (petrol models)
+ motor
+ cooling systems, heating
+ systems of power supply and edition
+ electric equipment of the motor
+ gear shifting boxes
+ Awtomatitscheckaja transmission
+ connection
+ brake system
+ Aufhängung and management
+ body
+ electric onboard equipment



Check of a state and compensation of hoses of motor office, localization of a vytecheniye

Compensation of hoses of the air conditioning system has to be made in service station of representative office or in the allocated workshop where there is an equipment for sure withdrawal of pressure in system. You never connect system hoses from you do not accept its component, meanwhile pressure is not dumped.

General information

Influence of high temperatures in motor office leads a rubber sleeve and plastic hoses which are used in various systems to gradual accident. It is necessary to make it is necessary regularly check of hoses on existence of cracks, weakening of strengthening of collars, Erhärtens of materials and signs of a vytecheniye.

Information which behaves to hoses of the cooling system, nizheperechislen (watch office check of functioning of the cooling system and frost resistance of the cooled liquid, compensation of liquid) and to hoses of the brake system - in office check of the brake system.

The majority of hoses (everything), however, do not collect the strength by means of collars. Where collars are used, check reliability of its strengthening which guarantees lack of a vytecheniye. If collars are not used, be convinced that the hose in a joint with cutting was not inflated und\oder which did not coarsen a vytecheniye allowing.

If there are signs that there is a vytecheniye of some liquid, but you cannot learn type of liquid or an exact origin, then it is necessary to give it is necessary the car on long time and to put a big piece of paper or a rag under car. It will help to find work of Durchfließens of liquid, and also will help to identify liquid after color. But think that several vytecheniye can be shown only at the working motor.

Vacuum hoses

Usually vacuum hoses which are especially used in systems of immersion of toxicity of the working gases have a marking paints or inserts from color strips. Various systems demand use of hoses with various thickness of walls, to heat stability and various resistance of schlopywaniju. At compensation of hoses you follow that material of a new hose corresponded to the old man's material.

Often, the only reliable way of check of a condition of a hose is its full removal of the car. At removal more hoses you care for distinct marking of hoses and a nastorazhivaniye to guarantee the correct installation.

When checking hoses of vacuum you also do not forget to check Ton-evident plastic associations. You look at them on existence of cracks which can cause a vytecheniye.

Vytecheniye in a hose of vacuum means that air is soaked up in a hose (and it appears from a hose not), and it does Follow very difficult for detection. For tracing of a vytecheniye of vacuum it is possible to use a small piece of a hose of vacuum as Stethoskop. If the end of a hose directly is over a blank space, the hissing sound will be distinctly heard by a hose. Vyslushite all hoses of vacuum and association on existence of characteristic Zischens, it from a vytecheniye testifies. It is necessary to avoid contact with the hot and moving details as the motor when checking has to work.

Fuel hoses

At audit or service of components of system of fuel it is necessary established precautionary measures that they paid attention.

You perform all works to them well aired the room, do not allow rapprochement of naked flame (for example, the lit cigarettes) or is more defenseless from the lamp shade of bulbs to the venue of works.

At once you collect the spilled fuel from the old ragamuffin who then the place you develop where its spontaneous ignition is impossible.

During the fuel meeting on skin at once you erase from its enough waters with soap.

At work with system of fuel it is necessary to use it is necessary goggles and always to have handy the fire extinguisher.


Hoses of fuel are under pressure usually therefore at its switching off you are ready that rasbrysgiwatsja fuel will be and it is necessary to collect it.

Before serving fuel hoses, it is necessary to push together pressure in system of an injection of fuel!


Check all rubber hoses of fuel for existence of signs of sale and pathetic qualities. Address the land plots of a bend and before a nastorazhivaniye, for example, cracks can be formed a hose joint with the pump for fuel or the filter, there.

Use only high-quality hoses of fuel., under what circumstances you never use as fuel not supplied vacuum hoses, to transparent plastic listeners or rubber hoses.

For strengthening of hoses of fuel collars like tape are used usually. These collars weaken tension over time and can at removal of "hinausspringen". At compensation of hoses you replace such collars with collars like screws.

Combustible precisely it is difficult for Vytecheniye to define until the vytecheniye does not become essential and it becomes a little noticeable, so. Fuel quickly inclines that evaporates, hardly it communicates in air, especially in hot motor office. Small drops can vanish before you can define a blank space. If you suspect that the fuel vytecheniye in the field of motor office is available, then you cool the motor and you start it until it it is cold, at an open cowl of the engine. Metal objects contract when cooling, and rubber sleeves incline that are weakened so any vytecheniye will be more obvious until the motor at start from a cold state is not heated.

Metal lines

Between the pump for fuel and system of an injection of fuel of section of metal listeners often are established. Carefully you check these listeners for existence of dents, Drehens or cracks.

If it is necessary to replace section of the metal line, use only indissoluble steel listeners as copper and aluminum listeners that are insufficiently firm to vibrations to resist which are caused by operation of the motor.

Check metal brake lines on places of its association with the main cylinder and by means of the regulator of pressure or the antiblocking device (if there is it) for existence of cracks or schtuzernych of associations is weakened. Any signs of Ausfließens of brake fluid demand urgent careful audit of all brake system.

Hoses of system of hydro-strengthening of a steering wheel

Check hoses of system of hydro-strengthening of a steering wheel for existence of signs of Ausfließens of liquid, the weakened schtuzernych of associations and worn-out collars. The passing hoses and worn-out collars need to be replaced it is necessary.

Cooling system hoses

Vytecheniye in the cooling system comes to light after a whiteness or color of a rust to attack in area usually which joins a vytecheniye.

Carefully you check the heater and hoses of the cooled liquid on all length. Replace hoses with cracks, Bruchen and signs of aging. Cracks need easier to be found if pereschat a hose. If collars which strengthen hoses on cooling system elements address. Collars of strengthening of a hose which were strongly tightened can cause breakage or a hole of a hose, result that there will be a vytecheniye in the cooling system. You look at all hoses and at surfaces of Anschließens of hoses concerning a vytecheniye. If some problems of similar character with a vytecheniye are spread, then you replace this of components or transferring.