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
   8.2. General information
   8.3. Hoses of system of cooling
   8.4. Radiator
   8.5. Thermostat
   + 8.6. Radiator fan
   8.7. Electric sensors
   + 8.8. Water pump
   8.9. Heating and ventilation system
   + 8.10. Elements of system of heating
   8.11. Air central air
+ 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



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8.7. Electric sensors

THE SENSOR OF LEVEL OF COOLING LIQUID

Removal

Arrangement of the sensor of level of cooling liquid on a broad tank

PERFORMANCE ORDER
1. The sensor is established on a lateral wall of a broad tank (see drawing). Removal of the sensor make on the cold engine. Partially merge cooling liquid so that the broad tank was empty.
2. Disconnect electric sockets from the sensor of level of cooling liquid.
3. Remove a lock ring and take the sensor of level of cooling liquid from a broad tank. Remove a sealing ring.
4. Connect an ohmmeter to contacts of the sensor and measure resistance of the sensor.
5. If the float of the sensor is established in the top situation, contacts of the sensor should be opened. At float installation in the bottom situation contacts of the sensor should become isolated.

Installation

PERFORMANCE ORDER
1. Installation is made in sequence, return to removal. Establish a new sealing ring on the sensor case. Fill in cooling liquid in cooling system.

THE SENSOR OF THE INDEX OF TEMPERATURE OF COOLING LIQUID

The sensor of the index of temperature of cooling liquid is screwed in in the top left part of a head of the block of cylinders. Do not mix it with the sensor of temperature of cooling liquid of a control system of the engine which is located a row.

Removal

PERFORMANCE ORDER
1. Removal of the sensor make on the cold engine. Partially merge cooling liquid from cooling system.
2. Disconnect from the sensor the electric socket, unscrew the sensor from a head of the block of cylinders and remove a sealing ring.

Installation

PERFORMANCE ORDER
1. Installation is made in sequence, return to removal. Establish on the sensor a new sealing ring. Add cooling liquid in cooling system.