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
      System of production of the fulfilled gases - general information
      Removal, installation of system of release and check of tightness
      Systems of decrease in toxicity of release - the general information
      Catalytic converter
      Turbocompressor - the general information, removal and installation
      The compressor of the blown air with the belt drive
      The intercooler - the general information
+ Engine electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment







Removal, installation of system of release and check of tightness

Removal

 PERFORMANCE ORDER

At installation of system of release you watch that separate elements of system were densely joined with each other. Otherwise at control of the fulfilled gases incorrect results can be received.
6-cylinder engines have two-line system of release with dual pipes. Works with this system it is carried out similar to work with the one-line system described below.

Lifting operation and installations of the car on supports is connected with danger! Therefore before carrying out operation study Poddomkrachivaniye's Section and towage of Introduction to the management.

1. Lift and install the car on supports.
2. Remove the lower facing of a motive compartment, address the Section Removal and installation of a cover of a motive compartment from the bottom.
3. Spray all bolts and nuts of system of release by a rust eliminator. Wait some time.
4. Petrol engine: Remove from holders sockets a lambda probes and disunite them.
5. Petrol engine: Disconnect a reception pipe from a final collector.
6. Diesel engine: Disconnect a reception pipe from the preliminary catalytic converter for what wring out a collar.
7. Bring wooden support under system of release or ask the assistant to take system.

8. Disconnect the holder (1) of a reception pipe. On an illustration the engine 271 is shown.

9. Turn off nuts (1) on the holder of the transmission. Remove the carving level lying under them. On an illustration the engine 611 is shown.

10. 6-cylinder petrol engine 112: Disconnect the holder of system of release on the car bottom.
11. Lower system of release in a set and take out it.
12. If necessary separate the catalytic converter and the additional muffler.

The used catalytic converter contains valuable materials which can be utilized. HUNDRED MERCEDES-BENZS accept the converters which were in the use, and their residual cost is considered upon purchase of the new converter.


Installation

 PERFORMANCE ORDER

1. Check existence of cracks and damages of rubber support and the holder, if necessary, replace.
2. If the parts which were in the use are established again, clear an emery paper of products of combustion and a rust flanges of pipes. Surely apply new sealing laying, bolts and nuts. To facilitate process of an otvorachivaniye of bolts and nuts it is recommended to grease them before installation by high-temperature copper paste.

Do not allow hit of high-temperature paste in system of release in front of the catalytic converter. It is also not allowed to apply liquid sealants since the catalytic converter can be polluted.

3. Petrol engine: establish a reception pipe with new laying and fix on a final collector, without tightening.
4. Diesel engine: Establish a reception pipe with a new sealing cone on the preliminary catalytic converter and clamp a collar.

5. Establish on the car bottom the holder (1) of system of release with rubber support (2). Establish a reception pipe, freely, without pulling it. The distance of elements of system of release to any detail of the car has to be not less than 25 mm.

6. Establish a carving level (1) of the holder of a reception pipe. Surely replace nuts (2) on the holder of a reception pipe with new and tighten the moment 20 Nanometers.

7. Tighten connecting flanges and collars of a reception pipe the moment of 20 Nanometers.

8. Petrol engine: Join sockets a lambda probes and fix on holders.
9. Start the engine and check system of release for tightness.
10. Establish the lower facing of a motive compartment, address the Section Removal and installation of a cover of a motive compartment from the bottom.
11. Lower the car on wheels.


Check of tightness of system of release

At models with the petrol engine and the adjustable catalytic converter leakage of system of release before a lambda probe can result in the following malfunctions:

· To difficulties in start of the engine.
· To vibrations of the engine on single turns and to engine stops.
· To breakthroughs at dispersal of the car.

Check conditions: Engine cold or warm.

 PERFORMANCE ORDER

1. Start the engine and at the working engine close a rag the muffler.
2. Listen to system of release for the purpose of leakage definition. If necessary spray places of connections a head of cylinders / a final collector and a final collector / reception a pipe means for search of leaks and find them on the arising bubbles.
3. Eliminate leakage.