Mercedes of the S-class W202

1993-2000 of release

Repair and operation of the car



Mercedes W202
+ 1.2. General information
+ 2. Maintenance
+ 3. Engines
+ 4. Lubrication system
+ 5. Cooling system
+ 6. Heating, ventilation
+ 7. System of ignition
- 8. Fuel system
   + 8.1.1. Introduction
   + 8.2. System of injection of petrol engines
   + 8.3. System of injection and power supply of diesel engines
   - 8.4. System of production of exhaust gases
      8.4.2. Main and average mufflers
      8.4.3. Cars with the catalyst
      8.4.4. Device of neutralization of exhaust gases of the diesel car
      8.4.5. Rub in one – or how to save the catalyst
+ 9. Transmission
+ 10. Running gear
+ 11. Steering
+ 12. Brake system
+ 13. Body
+ 14. Electric equipment
+ 14.2. Electrical circuitries






8.4. System of production of exhaust gases

8.4.1. Introduction

GENERAL INFORMATION

4-cylinder engine


6-cylinder engine


2,0 l engine


2,2 / 2,5 l engines

The system of production of exhaust gases consists of the forward final pipeline with the catalyst, the average and main muffler.

The forward final pipeline is connected by bolts to a final collector which прифланцован to a head of the block of cylinders. All details are screwed together among themselves, and they can be changed separately. After dismantling it is necessary to apply the self-stopped nuts and consolidations. Check lock rings and a rubber emphasis on lack of porosity and damages, if necessary replace.

At assembly of new system of production of exhaust gases it is recommended to replace also all hinged details.

PETROL ENGINES

All details of system of production of exhaust gases can be replaced separately.


Prevention

At assembly of details of system pay attention to that they were rigidly connected. Otherwise when carrying out a research of composition of exhaust gases it is possible to receive the wrong results.


Removal

PERFORMANCE ORDER
1. Raise the car.
2. Moisten with anticorrosive lubricant all bolts and nuts of system of production of exhaust gases. Leave for some time bolts and nuts under the influence of anticorrosive lubricant.
3. Unscrew from below the forward final pipeline from a final collector (158/1).
4. 6-cylinder engine: remove the oxygen sensor.
5. Prop up system of production of gases wooden linings.
6. Unscrew on a support (10) bolts (10/3).
7. Turn off nuts (10/2) on a carving plate (10/1). Remove a carving plate.
8. Unhook rubber support (7/1), (9/1), (9/2), (158/2) by means of a self-made hook.
9. Weaken system of production of exhaust gases in a set and Take it.

Installation

PERFORMANCE ORDER
1. Before installation of system of production of exhaust gases check whether the flange to a final collector is bent, if necessary level a flange.
2. Check rubber support for lack of porosity or damages, if necessary replace them.
3. Install collected new system of production of exhaust gases, slightly tighten connecting flanges.
4. If again you establish details of former system of production of exhaust gases, then clear an emery cloth of the remains of combustion and corrosion of the place of connections.
Prevention

That it was possible to separate easier nuts and bolts of system of production of exhaust gases later, we recommend to grease them with high-temperature paste, for example, of "Liqui Moly LM-508-ASC".


5. Hang system of production of exhaust gases in rubber support (pillows).
6. By turn and shift in the longitudinal direction level system of production of exhaust gases so that everywhere there was a sufficient gap with a body and rubber support were evenly loaded.
7. Screw a carving plate with m 20 N.' moment.
8. Tighten bolts on a connecting flange with m 20 N.' moment, and on the forward final pipeline to a collector with m 30 N.' moment.
9. 6-cylinder engine: install the oxygen sensor.
10. Start the engine and check tightness of system of production of exhaust gases.
11. Lower the car.

DIESEL ENGINES

Removal

PERFORMANCE ORDER
1. Raise the car.
2. Remove the lower cover of a motor compartment.
3. Spray all bolts and nuts of system of production of exhaust gases anticorrosive means and wait until means begins to work.
4. Unscrew from below the forward final gas pipeline on a final collector (158/1). (158) – catalyst.
5. Prop up system of production of exhaust gases wooden racks.
6. Unscrew nuts (10/2), (8/2) on a carving plate (10/1), (8/1). Remove this plate.
7. Unhook rubber support (7/1), (9/1) independently made keys.
8. Release system of production of exhaust gases and take it.

Installation

PERFORMANCE ORDER
1. Before assembly of system of production of exhaust gases check whether the flange to a final collector is bent, in need of it it is necessary to verify.
2. Check rubber support for porosity and absence of damage.
3. Fasten new system of production of exhaust gases, slightly tighten a connecting flange.
4. If old details systems of release are again installed, clear places of connections an emery cloth of residual products of combustion and corrosion.
Prevention

That nuts and bolts of system of production of exhaust gases could be unscrewed easily subsequently, it is recommended to miss the mark them with high-temperature paste, for example, of "Liqui Moly LM-508-ASC".


5. Hang system of production of gases in rubber support.
6. By means of turn and shift in the longitudinal direction orient system so that everywhere there was a sufficient interval in relation to a design and rubber support were evenly loaded.
7. Screw a carving plate with m 20 N.' moment (approximate value).
8. Rigidly tighten with the moment 20 N. of m bolts on a connecting flange and bolts to the forward final pipeline on a collector.
9. Start the engine and check tightness of system of production of exhaust gases.