Mercedes W124

since 1985-1995 of release

Repair and car operation



W124 Mercedes
+ Governing bodies and control devices
+ MAINTENANCE
+ 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
   26.2. Cooling system
   26.3. Fuel and exhaust systems
   26.4. Coupling
   26.5. Mechanical transmission
   26.6. Automatic transmission
   26.7. Differential and driveshaft
   26.8. Brake system
   26.9. Suspension bracket and steering
   26.10. Electric equipment






26.2. Cooling system

GENERAL INFORMATION

Engine overheat

• Insufficient level of liquid in cooling system.
• The thermostat does not work.
• Internal cavities of a radiator are hammered.
• The fan of a radiator or the termovyazkostny coupling are faulty.
• The sensor of the index of temperature or the temperature index incorrectly show temperature.
• Existence of an air stopper with cooling system.
• The cover of a broad tank is damaged.

The engine does not get warm

• The thermostat is faulty.
• The sensor of the index of temperature or the temperature index incorrectly show temperature.
• The termovyazkostny coupling is faulty.

External leakages of cooling liquid

• Hoses of system of cooling or collars of fastening of hoses are damaged.
• The radiator or a heater radiator are not tight.
• The cover of a broad tank is faulty.
• The sealing ring of the water pump proceeds.
• The laying established between the water pump and the block of cylinders is not tight.
• Liquid boiling at an engine overheat.
• The radiator stopper is not tight.

Internal leakages of cooling liquid

• Laying of a head of the block of cylinders is punched.
• Cracks on a head of the block of cylinders or on the block of cylinders.

Corrosion of elements of system of cooling

• Periodic replacement of cooling liquid or washing of system of cooling was not made.
• Water use in system of cooling or the wrong ratio of a concentrate of antifreeze and the distilled water at preparation of cooling liquid.