Mercedes W124

since 1985-1995 of release

Repair and car operation

W124 Mercedes
+ Governing bodies and control devices
- 2. Maintenance (diesel engines)
   2.2. Periodicity of service
   2.3. Maintenance
   - 2.4. Each 9 000 km
      2.4.2. Check of elements of system of a being self-leveled back suspension bracket
      2.4.3. Check of level of oil in an automatic transmission
      2.4.4. Check of tightness of hoses and liquid effluence
      2.4.5. Check and replacement of an auxiliary driving belt
      2.4.6. Check of central air of air
      2.4.7. Check and adjustment of turns of idling
      2.4.8. Check of a forward suspension bracket and steering
      2.4.9. Shock-absorber check
      2.4.10. Check of a protective cover of a power shaft
      2.4.11. Check of forward brake shoes
      2.4.12. Check of back brake shoes
      2.4.13. Check of an exhaust system
      2.4.14. Check of level of oil in a mechanical transmission
      2.4.15. Check of level of oil in the main reverse gear
   + 2.5. Each 58 000 km
   2.6. Each 12 months
   2.7. Each 3 years
+ 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
+ 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
+ 15. System of ignition of 4-cylinder petrol engines
+ 16. System of ignition of four-cylinder petrol engines
+ 19. Mechanical transmission
+ 20. Automatic transmission

2.4.4. Check of tightness of hoses and liquid effluence

1. Leaks in system of cooling are usually found on white or colors of a rust to a raid in the area adjoining leak.
2. Carefully check a radiator and hoses of cooling liquid on all length. Replace hoses with cracks, gaps and aging signs. Cracks are easier for finding if to press a hose. Pay special attention to collars which attach hoses to elements of system of cooling. Collars of fastening of a hose which were strongly tightened, can cause a gap or a hose puncture, leaks in cooling system will be result of that. Examine all hoses and surfaces of connection of hoses about leaks. If any problems of similar character with leaks are found, replace this component or laying.
3. Precisely it is difficultly to define leakages of fuel, while leak does not become essential and, therefore, easily visible. Fuel tends to evaporate quickly as soon as it contacts with air, especially in a hot motor compartment. Small drops can disappear before you can define a leak place. If you suspect that leakage of fuel in the field of a motor compartment takes place, then cool the engine and start it, while it cold, at an open cowl. Metal subjects tend to be compressed in a cold condition, and rubber hoses tend to be weakened, so any leaks will be more obvious, while the engine heats up from start and a cold condition.
4. If there are signs that there is a leakage of any liquid, but you cannot distinguish type of liquid or an exact origin, it is necessary to leave the car for long time and to put a big piece of paper or a rag under the car. It will help to find a place of course of liquid, and also will help to identify followed liquid on color. But keep in mind that some leaks can be shown only at the working engine.
5. Leak in a vacuum hose means that air is sucked in in a hose (instead of leaves a hose), and it does leak very difficult for detection. The method of detection consists in using an old vacuum hose as some kind of stethoscope. Hold one end of a hose close to an ear (but not in an ear), and other end use to investigate area round prospective leak. When the end of a hose will directly be over the leak place, the hissing sound will be clearly audible through a hose. It is necessary to avoid contact to hot and moving details as the engine at check should work.