Mercedes M-Class W163

since 1997 of release

Repair and car operation

Check of levels of liquids, control of leaks

Below the order of the procedure, made on a monthly basis is described. The description of checks of levels of other liquids can be found further in the appropriate sections devoted to concrete procedures of service. Regardless of the intervals stipulated by the Schedule, try not to leave without attention the emergence facts потеков liquids under cars, - similar signs indicate existence of malfunctions subject to immediate elimination.

At check of level of any working liquid the car should settle down strictly horizontally!

Liquids are the integral component of systems of greasing, cooling, braking and washing of glasses. In view of a normal expenditure and a tendency to pollution in use the car, it is necessary to make periodically checks of conditions/levels and replacement of working liquids, - familiarize with requirements of Specifications to types of applied structures and volumes of filling of the relevant systems.

Impellent oil

Visual control of leaks

PERFORMANCE ORDER

At an appreciable zamaslivaniye of the power unit and a big consumption of oil attentively examine places of the most probable development of leaks: Sealing element of a cover of a jellied mouth of impellent oil, - check on existence of cracks and other mechanical damages; Components of system of ventilation of a case (in particular, - the ventilating hose going from a cover of a head of cylinders to an inlet air line); Cover laying (ек) heads of cylinders; Head laying (ok) cylinders; Sealing element of a drain stopper of the pallet of a case of the engine; Laying of the oil filter, - attentively study a place of a prileganiye of the filter to a landing flange; Laying of the pallet of a case; Forward and back epiploons of a cranked shaft. Wrap the generator in polyethylene, spray the engine a usual cold cleaner, - then, through short time, - wash out the unit on a car wash. Joints of interfaced surfaces and sealing elements of the power unit powder outside with lime or talc. Check oil level, in case of need make the corresponding adjustment (see below). During short (about 30 km) trips (it is desirable on the high-speed route) warm up the engine to normal working temperature, - hot oil differs the increased fluidity and easier filters through thinnesses. Park the car in a safe place and, highlighting itself a lamp, investigate the engine for the purpose of localization of sources of leakages of oil. Eliminate the reasons of development of leaks.

Level check

PERFORMANCE ORDER

The maximum admissible consumption of impellent oil makes 1L/1000 km, the real consumption level of oil depends on a driving manner, - frequent movement with high turns of the engine conducts to increase in a consumption of oil. Information on a principle of functioning of a control lamp of level of impellent oil is provided in the Section the Combination of devices, measuring instruments and control lamps and light indicators. About dangerous falling of level of impellent oil of the driver the control lamp (warns built in assembly of the lock of ignition see. Section Combination of devices, measuring instruments and control lamps and light indicators). The sensor of level/temperature/quality of oil is located under the car, in the right forward corner of the pallet of a case of the engine (see сопр. illustration). On models ML 230 the sensor switch of level of oil (S43) is used. Check of level of impellent oil is made by means of measuring щупа, passed in directing tube and lowered in the engine to the bottom point of the pallet of its case. Check of level of oil should be made before the trip first in the present day, or about 5 minutes later after an engine stop. If to execute check immediately after engine switching off, its results will adequately not reflect a situation as the part of oil will appear distributed on internal galleries and engine components. Check of level of impellent oil Take measuring щуп from a directing tube and dry wipe its edge pure rags or a paper towel. Fill щуп back in a tube against the stop, then again take. Having examined an edge щупа, estimate size of the site moistened with oil. Level of oil should be between the top and bottom marks in an edge щупа. In case of need add in the engine the corresponding amount of oil of a demanded grade. Level of oil should be between bottom (MIN) and top (MOVE) marks in an edge measuring щупа Level lowering out of limits of the bottom border of an admissible range conducts to development of oil starvation of the engine fraught with serious mechanical damages of the last. Try not to pour also oil above the top mark as it can lead to a pelting of spark plugs or failure of epiploons of the power unit as a result of excessive increase of pressure. To fill in oil in the engine it is necessary to remove a carving cover of a jellied mouth. In order to avoid an oil razbryzgivaniye during its filling in the engine use a funnel, or a butterdish with a long nouse. Having filled in oil, screw and strongly tighten a cover of a jellied mouth, then start the engine and attentively examine on existence of signs of leaks a drain stopper and a surface of the oil filter interfaced to the block. Muffle the engine, wait 5-10 minutes during which oil will merge in the pallet, then once again check its level. Excess of oil is necessary for merging or pumping out from a case, - excessive level of impellent oil can be at the bottom of failure of the catalytic converter. Track reliability of a tightening of a cover of a jellied mouth. Check of level of engine oil is important preventive procedure of service of the engine. Continuous decrease in level testifies to existence of leakages of oil as a result of failure of epiploons, damage of sealing laying, wear of piston rings or directing plugs of valves. If oil on color or a consistence reminds milk, or at it there are water drops, it speaks about possible damage of laying of a head of cylinders, or formation of cracks to a head body (ok) or the block. Check should be made immediately. During measurement of level of oil always check also its condition. Big and index fingers remove from an edge щупа oil traces, - in case of presence at it small metal particles oil is subject to replacement (see. Section Replacement of impellent oil and oil filter).

Cooling liquid of the engine

PERFORMANCE ORDER

Do not allow antifreeze hit on open sites of a body and the painted surfaces of the car. Casual splashes immediately wash away a plentiful quantity of water. Remember that antifreeze is extremely toxic liquid and its hit in an organism even in small amounts is fraught with the most serious consequences, up to a lethal outcome. Never leave antifreeze being stored in leaky closed container, immediately collect cooling liquid spilled on a floor. Remember that the sweetish smell of antifreeze can draw to itself attention of children and animals. About ways utilization of the fulfilled cooling liquid consult with local authorities, - in many regions of the world special points on different reception of working off are equipped. At all do not merge old cooling liquid in the sewerage and on the earth! Recently nontoxical grades of antifreeze are developed, nevertheless, they also should to be utilized in the organized order. All cars considered in this Management, are equipped with system of cooling of the compensatory type, working at superfluous pressure. The white plastic broad tank is located in an impellent compartment and connected by a hose to a radiator. In process of an engine warming up in the course of its work extending cooling liquid fills a tank. When cooling engine cooling liquid automatically arrives back in cooling system that provides maintenance of constant value of its level. About dangerous falling of level of cooling liquid of the driver the control lamp (warns included in structure of a combination of devices see. Section Combination of devices, measuring instruments and control lamps and light indicators). The sensor switch of level of cooling liquid is located in the lower part of a broad tank of system of cooling. Check of level of cooling liquid in the tank should be made regularly, at strictly horizontal position of the car and the switched-off engine. In a cold condition level of cooling liquid should reach a mark of "COLD LEVEL" put on a translucent wall of a tank. After an engine warming up level of cooling liquid rises still approximately on 1.0 - 1.5 see. In case of need make the corresponding adjustment, - add only liquid of demanded structure (see. Specifications). Having made on the car a short trip, once again measure level of cooling liquid, - insignificant adjustment can be made by a way of a dolivaniye of the distilled water, however, it is necessary to remember that frequent additions of water lead to an antifreeze razzhizheniye therefore it is more reasonable to add always in system a mix of demanded structure. Regularly arising need for correction of level of cooling liquid testify to existence of its leaks (external or internal), - attentively study an external condition of a radiator, connecting hoses, covers of a jellied mouth, drain jams and the water pump (see. The section Check of functioning of system of cooling and frost resistance of cooling liquid, liquid replacement). If to reveal a source of leak it is not possible, check tightness of landing of covers of a broad tank and a radiator in conditions HUNDRED. Removal of covers of components of system of cooling should be made after complete cooling of the engine. Wrap up a cover rags and unscrew it to the first point of easing of resistance, - if thus from under a cover steam or cooling liquid starts to escape, let's to the engine cool down a little more, and only then finally uncover. It is necessary to check also a condition of cooling liquid, it should be rather pure. If liquid has reddish-brown coloring, it is necessary for merging, then to wash out a path of system of cooling and to fill it with a fresh mix of demanded structure. Even if cooling liquid looks normally, inhibitors of corrosion entering into its structure lose over time the efficiency therefore replacement in any case should be made according to the Schedule of routine maintenance. Check of resilience of cooling liquid to freezing is made by means of the areometer.

Brake liquid

PERFORMANCE ORDER

Brake liquid can harm your eyes and damage the painted surfaces of the car therefore be extremely careful at the treatment of her. Do not use brake liquid which long time stood opened or to which is more than one has some. Brake liquid has property to absorb moisture from air that can lead to dangerous loss of efficiency of brake system. Use only the recommended type of brake liquid. Mixing of various types of liquid can lead to refusal of brake system. The main cylinder of brake system is established in a back left corner of an impellent compartment. About falling of level of brake liquid of the driver prevents operation built in a combination of devices of a control lamp (see. The section the Combination of devices, measuring instruments and control lamps and light indicators) which poplavkovy sensor switch is built in a cover of the tank of the main brake cylinder (GTTs). The sensor switch of level of brake liquid is built in a GTTs tank cover Level of brake liquid is checked visually and should be between «MAX» and «MIN» marks put on translucent walls of the GTTs tank. In case of need make the corresponding adjustment, having added demanded amount of fresh liquid through a tank mouth, - before an otvorachivaniye of a cover wipe the tank outside in order to avoid hit to the hydraulic highway of dirt. It is not necessary to fill in excessive amount of liquid in the tank. At the removed cover check liquid and GTTs tank walls on existence of signs of pollution. In case of identification of presence of particles of a rust, dirt or water drops, it is necessary to replace liquid with subsequent "pumping" of brake system. Having finished adjustment/replacement, track flatness of landing and reliability of a tightening of a cover of the tank. Gradual lowering of level of liquid in the GTTs tank is connected with wear of brake shoes. Need for addition of liquid is absent, if its level does not fall below «MIN» mark, - in case of need check a condition of frictional overlays of blocks, - replacement of blocks will lead to automatic alignment of level. If need for correction of level of brake liquid arises regularly, it is necessary without to check carefully a hydraulic path of brake system on existence of signs of development of leaks, - attentively survey a condition of supports / wheel cylinders, GTTs, brake tubes, hoses and their shtutserny connections, (see. Sections Check of brake system and Check of a condition and replacement of hoses of an impellent compartment, localization of leaks). When lowering level of liquid in the GTTs tank below «MIN» mark the brake system should be "pumped over" (see. Head Brake and auxiliary systems).

Liquid of system of hydrostrengthening of a wheel (GUR)

PERFORMANCE ORDER

If liquid level in the tank fell below a zone corresponding to the current temperature range, the steering with the hydraulic amplifier of the steering mechanism is necessary for checking in a specialized workshop as liquid loss takes place, - idle time of correction of level in this case will be insufficiently! Check of level of GUR liquid is made at order temperature 20°С. Level of liquid should be between marks of "MIN" and "MOVE" on walls of the tank of system of hydrostrengthening of a wheel. The full volume of the tank makes 1.2 l.

Liquid of washing of glasses/lenses of headlights

PERFORMANCE ORDER

The concentrate of stekloomyvayushchy means is easily combustible! At the address with a concentrate of stekloomyvayushchy means application of fire, an open flame and smoking are forbidden. The tank of liquid of washing of glasses is established in the left forward corner of an impellent compartment, behind the left block headlight and is equipped with a jellied mouth with a cover of bayonetny type. Capacity of the tank makes about 7.6 l (see. Specifications). Location of the tank of liquid of washing of glasses/lenses of headlights in an impellent compartment (for all models) About falling of level of liquid of the driver prevents operation built in a combination of devices of a control lamp, - the sensor switch of a control lamp is built in in the top part of the tank of washing liquid. In areas with a temperate climate it is possible to fill system with usual water, but it is recommended to add in means water for washing of glasses (the summer concentrate of MV has S marking). The tank should be filled no more than on two thirds that there was a free space on a case of expansion of water when freezing. In areas with cold climatic conditions it is necessary to use a special concentrate for windscreen washing (W marking), reducing a freezing point of liquid which can be got in any shop of automobile accessories. Usually it is on sale in the concentrated or ready look. If you got the concentrated antifreeze, mix it with water according to the instruction of the producer on packing. Do not use antifreeze of system of cooling - it will damage the painted surfaces of the car!