Mercedes S-Class W-140

1991-1999 of release

Repair and operation of the car



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, adjustment and replacement of brushes of screen wipers

Check of a condition of brushes and starting position of the lever of a screen wiper

The tool for check of a starting position of the lever of a screen wiper

1 — the Key
2 — the screen wiper Lever
3 — the Lock screw


On brushes of screen wipers the road film collects over time, reducing efficiency of their work therefore brushes should be washed out regularly in the soft cleaning solution.

Assemblies of screen wipers with brushes have to look round regularly. If survey revealed existence of hardenings or cracks on rubber of brushes, replace brushes. If at survey nothing unusual is revealed, wet a windshield, include screen wipers, let's them work a little, and switch off them. Or strips on pure glass indicate an uneven trace from brushes on glass that brushes should be replaced.

If brushes insufficiently well clear a windshield, then the following reasons of it are possible:

   a) When passing by the car of an automatic sink on a windshield wax particles got. These particles can be removed at addition in liquid of windscreen washer of the detergent having property to dissolve wax;
   b) Filling of the tank of liquid for purification of glasses with voskorastvoryayushchy properties can significantly improve action of screen wipers;
   c) Fat-dissolving cleaners are not able to purify glass completely.

Damage of brushes can be also the cause of bad purification of glasses, brushes should be replaced.

During operation of the mechanism of screen wipers there can be a weakening of fixing nuts therefore they should be checked and as necessary to tighten every time when checking brushes (apply to Heads the Body and Onboard electric equipment for more detailed information on operation of the mechanism of screen wipers).

Replacement of brushes

See the Section Replacement of Brushes of Cleaners of Headlights and Windshield in the Head the Operation manual.