Mercedes W124

since 1985-1995 of release

Repair and car operation


W124 Mercedes
+ Governing bodies and control devices
- MAINTENANCE
   1.2. Periodicity of service
   1.3. Maintenance
   + 1.4. Each 9 000 km
   - 1.5. Each 18 000 km
      1.5.2. Check of elements of system of a being self-leveled back suspension bracket
      1.5.3. Check of level of oil in an automatic transmission
      1.5.4. Check of tightness of hoses and liquid effluence
      + 1.5.5. Check and replacement of an auxiliary belt of a drive
      1.5.6. Check of system of a koditsionirovaniye of air
      1.5.7. Check of level of oil in the piston shock-absorber (STROMBERG)
      - 1.5.8. Check of turns of idling and quality of a fuel mix
         1.5.8.2. Models with system of injection of KE-GETRONIC fuel
      1.5.9. Check of a forward suspension bracket and steering
      1.5.10. Shock-absorber check
      1.5.11. Check of a protective cover of a power shaft
      1.5.12. Check of forward brake shoes
      1.5.13. Check of back brake shoes
      1.5.14. Check of an exhaust system
      1.5.15. Check of level of oil in a mechanical transmission
      1.5.16. Check of level of oil in reverse main gear
   1.6. Each 58 000 km
   1.7. Each 118 000 km or 1 time in 4 years
   1.8. Each 12 months
   1.9. Each 3 years
+ 2. Maintenance (diesel engines)
+ ENGINE
+ 4. Repair of 6-cylinder petrol SOHC engines
+ 5. Repair of 6-cylinder petrol DOHC engines
+ 6. Repair of the diesel engine established in the car
+ 7. Major maintenance of engines
+ COOLING SYSTEM
+ FUEL SYSTEM
+ 10. System of injection of BOSCH CIS-E fuel (KE-JETRONIC)
+ 11. System of injection of BOSCH HFM fuel
+ 12. Fuel system of diesel engines
+ 13. Fuel system of diesel engines
+ SYSTEMS OF START, IGNITION
+ 15. System of ignition of 4-cylinder petrol engines
+ 16. System of ignition of four-cylinder petrol engines
+ PRESTARTING HEATING
+ TRANSMISSION
+ 19. Mechanical transmission
+ 20. Automatic transmission
+ POWER SHAFTS
+ BRAKE SYSTEM
+ SUSPENSION BRACKET
+ BODY
+ ELECTRIC EQUIPMENT
+ CHECK OF MALFUNCTIONS






1.5.8. Check of turns of idling and quality of a fuel mix

1.5.8.1. Carburetor models
GENERAL INFORMATION

Adjustment is necessary for making on the hot engine. Thus all electric consumers should be switched off and the fan of a radiator should not work.

Idling turns

Prevention

On models turns of idling cope with PIERBURG carburetors the block of electronics and cannot be adjusted manually.

Arrangement of adjusting screws of the STROMBERG carburetor
 1–rod of the lever of a butterfly valve;
2–adjusting screw of adjustment of fast turns of idling;
3–butterfly valve lever;
4–screw of adjustment of turns of idling

PERFORMANCE ORDER
1. Connect to the engine a tachometer and check idling turns. Adjustment is made by turn of the screw of turns of idling (see fig. Arrangement of adjusting screws of the STROMBERG carburetor).
2. Quickly increase turns of the engine and then repeatedly measure idling turns.

Verification of the contents WITH

Contents adjustment WITH
 For contents adjustment WITH weaken a lock-nut (1) and rotate the fuel gate-type valve (2).

PERFORMANCE ORDER
1. Insert into an exhaust pipe the analyzer of exhaust gases.
2. Increase engine turns to 2 000 rpm for 15 seconds, then transfer the engine to a mode of turns of idling.
3. Check the contents WITH in exhaust gases. For adjustment remove a cap from the fuel gate-type valve, weaken a lock-nut and, rotating the fuel gate-type valve, establish the demanded contents WITH (see fig. Contents adjustment WITH).

The raised turns of idling

PERFORMANCE ORDER
1. Start the engine in an idling mode. Check that turns of idling and the contents WITH are correctly adjusted.
2. Manually open a butterfly valve that the engine worked at turns of 2 500 rpm. At the same time insert a small screw-driver into a groove from the casing of a butterfly valve available after removal of a plastic covering and move the engine lever to the engine before emergence of considerable resistance.
3. When fixing the lever of the engine by a screw-driver release a butterfly valve. Thus the engine should work at the raised turns of idling.
4. Using a tachometer, check the raised turns of idling. For adjustment rotate the screw of turns of idling. The screw of the raised turns of idling the shortest of two screws (see fig. Arrangement of adjusting screws of the STROMBERG carburetor).
5. In end open quickly a butterfly valve to disunite the mechanism of increase of turns of idling and to allow the engine to work at normal turns of idling.

Verification of the contents WITH on the raised turns of idling

Arrangement of a cap of the auxiliary air adjusting screw

PERFORMANCE ORDER
1. Establish the analyzer of exhaust gas in an exhaust pipe.
2. Establish the raised turns of idling. Check the contents WITH in exhaust gases. For adjustment remove a cap from the auxiliary air adjusting screw and, rotating the screw, establish the demanded contents WITH (see fig. Arrangement of a cap of the auxiliary air adjusting screw).
3. In end quickly open a butterfly valve to uncouple the mechanism of the raised turns of idling and to allow the engine to work at normal turns of idling.