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Mercedes S-Class W-1401991-1999 of releaseRepair and operation of the car |
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Mercedes S-Class + Mercedes-Benz cars of the class S (W-140) + Operation manual - Routine maintenance Specifications Active system of the warning of the term of approach planned THAT (ASSYST) Schedule of routine maintenance General information on control Check of levels of liquids, control of leaks Check of a condition of tires and pressure in them, designation of tires and disks of wheels, rotation of wheels Replacement of motive oil and oil filter Check of the brake system Check of fuel system, replacement of the fuel filter Check of a state and replacement of hoses of a motive compartment, localization of leaks Check of a condition of ridge belts of the streaming drive of auxiliary units Check of functioning of the cooling system and frost resistance of cooling liquid, liquid replacement Check of a condition of system of production of the fulfilled gases Check of the ATF level, replacement of the AT filter Visual check of tightness of automatic transmission Check of a condition of components of a suspension bracket and steering Check of a condition of protective covers of power shafts Check of the air conditioning system Lubricant of limiters of doors and cylinders of locks Visual control of a seat belt and block of a safety cushion Check of operability of headlights and horn Check of a state, adjustment and replacement of brushes of screen wipers Check of a condition of the battery, care of it and charging Replacement of the saloon filter Replacement of brake fluid Check and replacement of spark plugs, check of a condition of high-voltage wires (petrol models) + Engine + Cooling systems, heating + Power supply system and release + Engine electric equipment + Gear shifting box + Automatic transmission + Coupling + Brake system + Suspension bracket and steering + Body + Onboard electric equipment |
Check of a state and replacement of hoses of a motive compartment, localization of leaks
General information Influence of high temperatures in a motive compartment leads to gradual failure of the rubber and plastic hoses used in various systems. It is regularly necessary to make check of hoses on existence of cracks, weakening of fastening of collars, hardening of materials and signs of leaks.Information relating to cooling system hoses is given below (see the Section Check of Functioning of the Cooling System and Frost Resistance of Cooling Liquid, liquid replacement) and to hoses of the brake system - in the Section Check of the Brake System. The majority of hoses (but not all) fasten by means of collars. Where collars are used, check reliability of their fastening providing lack of leaks. If collars are not used, make sure that the hose in a junction with the union was not inflated and/or did not harden, allowing leaks. If there are signs that there is a leak of any liquid, but you cannot distinguish type of liquid or an exact origin, then it is necessary to leave the car for long time and to put a big piece of paper or a rag under the car. It will help to find the place of course of liquid, and also will help to identify liquid on color. But keep in mind that some leaks can be shown only at the working engine. Vacuum hoses Usually vacuum hoses which are especially applied in systems of decrease in toxicity of the fulfilled gases have color marking or inserts from color strips. Various systems demand use of hoses with various thickness of walls, thermal stability and various resistance to a collapse. When replacing hoses you watch that material of a new hose corresponded to material of old.Often, the only reliable way of check of a condition of a hose is its full removal from the car. At removal more than one hose take care of accurate marking of hoses and unions to provide the correct assembly. When checking vacuum hoses do not forget to check T-shaped plastic connections also. Examine them on existence of cracks which can cause leaks. Leak in a vacuum hose means that air is sucked in in a hose (but does not leave a hose), and it does leak very difficult for detection. For identification of leak of vacuum it is possible to use a small piece of a vacuum hose as a stethoscope. When the end of a hose directly is over the place of leak, the hissing sound will be clearly heard through a hose. Listen to all vacuum hoses and connections on existence of the characteristic hissing demonstrating leak. It is necessary to avoid contact with hot and moving details as the engine when checking has to work. Fuel hoses
Fuel hoses usually are under pressure therefore at their detachment be ready that fuel will be sprayed and he needs to be collected.
Check all rubber fuel hoses for existence of signs of wear and attritions. Pay special attention to sites of a bend and in front of unions, for example a hose junction with the fuel pump or the filter, cracks can be formed there. Use only high-quality fuel hoses. Never, under no circumstances use as fuel not reinforced vacuum hoses, transparent plastic tubes or water hoses. For fastening of fuel hoses collars of tape type are usually used. These collars weaken a tension over time and can "jump out" at removal. When replacing hoses replace such collars with collars of screw type. Precisely it is difficult to define fuel leak until leak becomes essential and, therefore, easily visible. Fuel tends to evaporate quickly as soon as it contacts with air, especially in a hot motive compartment. Small drops can disappear before you are able to define the place of leak. If you suspect that leak of fuel in the field of a motive compartment takes place, then cool the engine and start it, it cold, at an open cowl so far. Metal objects contract when cooling, and rubber hoses tend to be weakened so any leaks will be more obvious while the engine heats up at start from a cold state. Metal lines Between the fuel pump and system of injection of fuel sections of metal tubes are often inserted. Carefully check these tubes for existence of dents, twisting or cracks.If the section of the metal line needs to be replaced, use only seamless steel tubes since copper and aluminum tubes are insufficiently strong to resist to the vibrations caused by operation of the engine. Check metal brake lines in places of their connection with the main cylinder and with the regulator of pressure or ABS (if it is available) for existence of cracks or the weakened nipple connections. Any signs of leak of brake fluid demand immediate careful survey of all brake system. Hoses of system of hydrostrengthening of a wheel Check hoses of system of hydrostrengthening of a wheel for existence of signs of leak of liquid, the weakened nipple connections and worn-out collars. The proceeding hoses and worn-out collars should be replaced.Cooling system hoses Leaks in the cooling system usually are found on white or colors of a rust to a raid in the area adjoining leak.Carefully check a radiator and hoses of cooling liquid on all length. Replace hoses with cracks, gaps and signs of aging. It is easier to find cracks if to press a hose. Pay special attention to collars which attach hoses to cooling system elements. Collars of fastening of a hose which were strongly tightened can cause a gap or a puncture of a hose, leaks in the cooling system will be result of what. Examine all hoses and the surfaces of connection of hoses regarding leaks. If any problems of similar character with leaks are found, then replace this of components or laying. |
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