Mercedes M-Class W163

since 1997 release

Repair and operation of the car

Mercedes W163
+ Mercedes-Benz cars of a class M (W163)
+ Governing bodies and methods of safe operation
- Current leaving and service
   Active system of the warning of the term of approach planned THAT (ASSYST)
   Schedule of routine maintenance
   General information on settings
   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 a power supply 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 multicostal belts of the 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
   Replacement and 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 boots 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 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 and air conditioner
+ A power supply system and production of the fulfilled gases
+ Systems of electric equipment of the engine
+ Manual box of gear shifting
+ Automatic transmission
+ Transmission line
+ Brake and auxiliary systems
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment

Check of the brake system

The dust which is formed as a result of wear of slips and accumulating on components of the brake mechanism may contain asbestos hazardous to health. Do not blow this dust by means of compressed air and do not inhale it! Do not use solvents on the basis of gasoline for removal of dust. Dust should be washed away a special cleaner of the brake system or methyl alcohol in drain capacity. After rubbing of components of the brake system a damp rag this rag and contents of drain capacity should be held in the closed and signed container. Further whenever possible try to use not containing asbestos components.

Except checks through the established time intervals a condition of brake mechanisms it is necessary to check every time at removal of wheels or at emergence of signs of malfunction in system. For driving safety the procedures of check of the brake system described below are the most important of all procedures for service of the car made by you.

Signs of malfunctions in the brake system


  1. Disk brake mechanisms can be equipped with the built-in indicators of wear of frictional slips signaling need of immediate performance of replacement of blocks in order to avoid failure of brake disks.
  2. Any of the listed below signs can indicate potential defect of the brake system:
    a) When squeezing a pedal of a brake the car "takes away" in one party;
    b) Brake mechanisms when braking make the scraping or squealing sounds;
    c) The course of a brake pedal is excessively big;
    d) Squeezing of a pedal of a foot brake is followed by the pulsations which are not connected with ABS operation;
    e) Leak of brake fluid takes place (usually on inside of the tire or a wheel).
  3. In case of identification of any of the listed above symptoms though it is necessary to make immediately check of a condition of components of the brake system.

Brake lines and hoses


In a hydraulic path of the brake system mainly steel tubes are used, - the exception is made only by the flexible reinforced hoses serving for connection of tubes with wheel cylinders. The condition of flexible brake hoses has to be checked on a regular basis.

  1. Park the car on the flat horizontal platform and kill the engine. Take off caps of rims. Weaken, but do not turn out bolts of fastening of all four wheels.
  2. The car also establish to Poddomkratta it on props.
  3. Remove wheels.
  4. Check all hydraulic lines and hoses of a brake path for existence of cracks, attritions, swellings, deformations and signs of development of leaks. Make sure of lack of signs of friction of brake lines about elements of a suspension bracket and steering. Attentively examine all nipple connections of a hydraulic brake path on existence of signs of development of leaks, check reliability of fastening of nipple bolts and nuts.
  5. Bending flexible brake hoses in different directions, make sure of lack of signs of their mechanical damage. Track that the established hoses were not overwound, - as a binding it is possible to use the longitudinal color strip applied on a hose surface.

    Cracks and cuts the easiest come to light when bending a brake hose

  6. Having rotated a steering wheel, make sure that flexible brake hoses of forward brake mechanisms do not adjoin to elements of the steering drive.
  7. In case of identification of signs of development of leaks the causes of the last have to be immediately removed (in case of need see the Head Tormoznaya and auxiliary systems).

Check of thickness of brake shoes

Assessment of residual thickness of frictional overlays of external brake shoes can be made visually through an aperture in a rim by means of a pocket small lamp. Survey of an internal block in addition requires a mirror. More exact check of a condition of brake shoes is made after their removal, - measurement of thickness of frictional slips requires a caliper.

Disk brake mechanisms of forward wheels


Experience shows that wear of a brake shoe of a wheel from the forward passenger is most often higher, than from the driver in view of what survey always should be begun with the right board of the car. According to statistics about 1 mm of wear of blocks is the share of 1 thousand kilometers of a run under adverse conditions. In normal conditions wear of blocks is much less. Really, at a residual thickness of a block of 10.0 mm (taking into account a metal substrate) the block can be operated by at least 3000 more km.

  1. Mark with paint the provision of a forward wheel in relation to a nave. It will allow to establish the balanced wheel in the working situation. Weaken wheel bolts, then a front of the car and establish to a poddomkratta it on props. Remove the right forward wheel.
  2. Measure by a caliper the cumulative thickness of a frictional slip with a metal substrate both blocks of the brake mechanism.
  3. The limit of wear of forward blocks when replacement has to be made immediately, makes 7 mm. The description of the procedure of replacement of blocks is provided in the Head Tormoznaya and auxiliary systems.
  4. Having tracked for combination of the tags put in the course of dismantle, establish into place a wheel. Without greasing with anything, screw wheel bolts.
  5. Lower the car on wheels and, moving in a diagonal order, tighten bolts with the required effort.

Disk brake mechanisms of back wheels


  1. If that is established, take off a decorative cap and through an aperture in a rim visually estimate the residual thickness of an overlay of an external brake shoe, - in case of need use a pocket small lamp.
  2. For survey of an internal block use a mirror.
  3. As well as for forward brake mechanisms the minimum admissible thickness of back blocks makes 7 mm (a slip + a substrate).

Parking brake

To protozoa, and it is possible, the most obvious way of check of serviceability of functioning of the parking brake is deduction of the car on abrupt descent in the neutral provision of transmission, - the driver has to be in the place in the car. If the parking brake is not capable to hold the car, it is necessary to make its adjustment (see the Head Tormoznaya and auxiliary systems).