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
+ Motor
- Cooling systems, heating
   Specifications
   - Motor cooling system
      Compensation of the cooled liquid - general comments
      Removal and compensation of hoses of the cooling system
      Check of the thermostat
      Removal and device of the thermostat
      Removal and the device of the heater of the cooling system - a device detail
      Removal and device of the water pump
   + systems of ventilation, heating and air conditioning
+ 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


Motor cooling system

Means against a cold injury - a security measure against freezing

Do not allow a means meeting against a cold injury on the open land plots of a body and the painted surfaces of the car.

You erase casual drops from enough water urgently.

They remember that means against a cold injury is a poisonous liquid and a meeting in an organism even in small payment threateningly from the most serious consequences, to a lethal exit in the highest step.

You never give means against a cold injury from kept in leaky closed packing, collect the cooled liquid spilled on a floor urgently.

They remember that sladkowatyj a means smell against a cold injury to itself can lift attention of children and animals.

About ways you advise to yourself use of thoroughly working cooled liquid at local authorities, - in many regions of the world special points after acceptance of various study of gegestaltet. You do not pull together the old cooled liquid in the sewerage and on the earth at all!

It were nonpoisonous grades of means against a cold injury, despite it, them also lately is developed have to be implemented in an organized order.

The cooled liquid

The cooling system is filled mix of water, means against a cold injury and rust-preventing agent all the year round. It interferes with a rust and corrosion, deposits of salt and, besides, temperature of cooking of the cooled liquid raises. In the cooling system because of expansion of liquid when heating there is excess pressure that also leads to increase in a boiling point of the cooled liquid.

Pressure is limited is located in a cover of the expanding container of the gate which opens 1.4 - 1.6 bars for itself(himself) with a pressure.


For faultless functioning of the cooling system of the motor demand the increased temperature of cooking of the cooled liquid. At a low temperature of cooking can be formed steam stopper as result of which to itself the address of liquid decreases also cooling of the motor is worsened. Therefore the cooling system mix of water and the listed additions has to be filled by all means with it all the year round.