Mercedes C-Class

W203 since 2000 of release

Repair and operation of the car



Mercedes-Benz
+ Mercedes-Benz cars of class C (W-203)
+ Operation manual
+ Routine maintenance
+ Engine
+ Cooling system and heating
- Power supply system and release
   + Power supply system of the petrol and diesel engine
   + System of injection of fuel of the petrol engine
   + System of injection of fuel of the diesel engine. Turbocompressor
   + Systems of release and decrease in toxicity of the fulfilled gases. Turbocompressor
+ Engine electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment







Power supply system and release

 Separate characteristics are provided also in the text of the Head and in case of obligation of their performance are highlighted in bold type

Fuel

Fuel tank, l

Capacity

62

including fuel reserve

8

Petrol models

Unleaded gasoline is not worse than AI-95/A-85, perhaps temporary use of unleaded gasoline is not worse than AI-91/A-82.5. At the same time engine capacity will decrease a little, at increase in fuel consumption

Do not apply additive to fuel. They can result in the increased wear or damage of the engine.

Diesel models

Summer and winter diesel fuel

No. 2 or No. 1 on ASTM D975

Do not apply ship (Marine Diesel Fuel), diesel fuel boiler, etc.

When using diesel fuel with the content of sulfur over 0.5%, you make replacement of motive oil each 10000 km.

Winter fuel, provides normal working capacity to -20 °C.

Thanks to preliminary heating of fuel at the included system of heating of the car, the car on winter diesel fuel can be operated, as a rule, without refusals at a temperature of external air up to -25 °C.

Do not add gasoline to diesel fuel.

In case of use of summer diesel fuel, and also at a temperature of external air below -15 °C it is necessary to add certain, depending on temperature of external air quantity of means for improvement of fluidity or kerosene to fuel.

Means for improvement of fluidity can be used also in combination with kerosene.

You can receive the certificate of funds for HUNDRED Mercedes-Benzs.

The additive share taking into account temperature of external air has to be minimum.

The kerosene share in mix has to make no more than 50%.

Add additive to diesel fuel before loss of property of fluidity of diesel fuel owing to release of paraffin. Faults owing to release of paraffin can be rectified only heating of all power supply system.

You carry out mixing of diesel fuel with kerosene only in the fuel tank. For this purpose in a tank at first fill in kerosene, and then add diesel fuel.

After that the engine has to work some time in order that mix was distributed on all power supply system.

Fire-dangerous!

Additives of kerosene lead to decrease in a point of ignition of diesel fuel. Thereof danger at the treatment of fuel mix increases. Follow the corresponding safety regulations!

System of injection of the petrol engine

Electronic microprocessor system of the distributed injection of HFM with the thermometric measuring instrument of mass of the soaked-up air. The inlet pipeline with changeable geometry

System of injection of the diesel engine

Electronic, microprocessor, with direct injection from the general distributive Common-Rail highway, a turbocompressor and cooling of the blown air

Pressure of fuel, Atm

Petrol engines, with the connected vacuum

3.2 – 3.6

with the disconnected vacuum

3.7 – 4.2

Falling pressure

Right after an engine stop

3.0

In 30 min.

2.5

Productivity of the fuel pump

1 l / 35 sec.

Content in the fulfilled gases at full loading

Petrol CO2 engines, %

8.8 – 9.8

Diesel CO2 engines, %

9.8 – 10.8

Smoke of the diesel, no more

1.9

O2, %

0.1 – 0.5

WITH in an exhaust pipe, %

max. 0.5

NANOSECOND, ppm

100

Contents WITH on 2800 – 3100 rpm

WITH, %

0.3

Value lambda

0.98 – 1.02

TNVD

Drive

Dual chain from a crankshaft asterisk

Injection moment

Is established by means of the control probe, the piston of the 1st cylinder of the engine has to be in VMT

Idling turns, in min.

Adjustment of speed of idling within maintenance is not required.

Diesel engine 611

650 - 850

Diesel engine 612

640 – 840

Restriction of turns, in min.

4500 - 4900

Efforts of tightening of threaded connections, Nanometer

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

* The moments of an inhaling highlighted in the text in bold type are subject to exact observance; the efforts which are not highlighted in bold type are given only approximately.

Nozzle clip

7 Of Nanometer +90 °

Cap nut of the pipeline of a nozzle

20

TNVD gear wheel

40

TNVD flange

14

Fastening of TNVD

9

Reception pipe to a final collector

20

Arm to transmission

25