Mercedes C-Class

W203 since 2000 of release

Repair and car operation



Mercedes-Benz
+ Mercedes-Benz Cars of a class C (W-203)
+ Operation manual
+ Routine maintenance
+ Engine
- Cooling and heating systems
   + cooling System
   + Systems of ventilation, heating and air conditioning
+ Power supply system and release
+ engine Electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment



Industrial upgrade control systems of injection molding machine Belgium.


Cooling and heating systems

 Separate characteristics are provided also in the text of Head and in case of obligation of their performance are allocated with a bold print.

Design

Thermosiphon with the lopastny water pump. Thermostatic adjustment. With a separate broad tank. The fan with an electric drive, joins and switched off from the control unit

Cooling liquid: the mix of soft water and antifreeze (1:1), at such structure is provided frost resistance to – 37°С

Antifreeze

MB No. Q1 03 0002 or Glysantin Protect Plus/G482

System volume at replacement, l

  • Petrol engines with designation 111
8.5
  • Petrol engines with designation 271
7.5
  • Petrol engines with designation 112
10.5
  • Diesel engines with designation 611
11.9
  • Diesel engines with designation 6212
12.4
Composition of cooling liquid

Share of antifreeze in cooling liquid for ensuring frost resistance

to - 37°С

50 %

to - 45°С

55 %

Pressure in system

About 1.2 atm. (the exact size is specified on a cover of a broad tank). The cover should maintain pressure within two minutes.

Thermostat

Valve stroke

not less than 8 mm

Petrol engines

  • Opening beginning
87±2°С
  • Complete opening
102 °

Diesel engines

  • Opening beginning
92 °±2°С
  • Complete opening
102 °

Fan thermoswitch

Inclusion/switching off of the 1st step

92-97/84-91°C

Inclusion/switching off of the 2nd step

99-105/91-98°C

Stopper of a broad tank

The valve of superfluous pressure opens, atm.

Step 1

1.4 ± 0.1

Step 2

2.0 ± 0.1

The valve of depression opens

0.1

On a cover pressure of opening of the valve is given in atm. x 100. If, for example, on a cover costs «140/200», it is a question of a two-level cover and pressure of opening of the valve makes 1.4 and 2.0 atm.

Conditioner coolant

Type

R134a (do not use R12)

Volume, гр.

750

Refrigerator oil

Type

А001 989 0803

Volume, cm3

120

Efforts of a tightening of carving connections, Nanometer

The moments of an inhaling of fixture are given also in the text of Head and on some иллюстрациях*.

*vydelenny in the text a bold print the moments of an inhaling are subject to exact observance; the efforts not allocated with a bold print are given only roughly.

Stopper of cooling liquid on the block of cylinders

  • Petrol engines 111
40
  • Petrol engines 112
12
  • Diesel engines
30

Bolts of fastening of the water pump

4-cylinder petrol engines

  • Bolt М6
10
  • Bolt М8
25

6-cylinder petrol engines

  • Bolt М6
14
  • Bolt М8
35 (at the new case of the mechanism of distribution 10Нм and 25Нм respectively)

Belt damper

  • to the tension device
25
  • to the pump of cooling liquid
35

Diesel engines

  • Bolt М6
14
  • Bolt М8
20

Pulley to the pump of cooling liquid

35