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
   12.2. General information
   12.3. Air filter
   12.4. Fuel level sensor
   12.5. Fuel tank
   12.6. Inlet collector
   12.7. Accelerator cable
   12.8. Fuel pump of a high pressure
   12.9. The pumping-up fuel pump
   12.10. Mechanism of adjustment of the moment of injection, asterisk of the fuel pump
   12.11. Moment of injection of the fuel pump of a high pressure
   12.12. Fuel nozzles
   12.13. Electronic control system of turns of idling (ELR)
   12.14. Electronic anti-detonation system ARA
   12.15. Electronic control system of the diesel engine
   12.16. System of protection of the engine from an overload
   12.17. Fuel thermostat
+ 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






12.16. System of protection of the engine from an overload

GENERAL INFORMATION

Prevention

The system of protection of the engine from an overload is established only on the engine with a turbo-supercharging.


The system of protection of the engine from an overload is applied to engine capacity restriction at failure of the reduktsionny valve of a turbonagnetatel. The sensor of pressure established in an inlet collector measures pressure and is switched at the pressure exceeding demanded value. The sensor of pressure switches off the valve which blocks vacuum in knot of the diaphragm established on the fuel pump. Thus the fuel pump reduces supply of fuel to size, as well as in the engine without a turbo-supercharging.

In system of protection of the engine from overloads replacement of the sensor of pressure and the vacuum electromagnetic valve is possible only.

PRESSURE SENSOR

Removal

PERFORMANCE ORDER
1. The sensor of pressure is located from the accumulative chamber of an inlet collector near a tank of a washer of glasses.
2. Disconnect the electric socket from the pressure sensor.
3. Unscrew the pressure sensor from an inlet collector and remove a sealing ring.

Installation

PERFORMANCE ORDER
1. Installation is made in sequence, return to removal.

VACUUM ELECTROMAGNETIC VALVE

Removal

PERFORMANCE ORDER
1. The vacuum electromagnetic valve is located in a back part of a motor compartment.
2. Disconnect the electric socket from the vacuum electromagnetic valve.
3. Disconnect vacuum hoses from the vacuum electromagnetic valve.
4. Unscrew the screw and remove the vacuum electromagnetic valve.

Installation

PERFORMANCE ORDER
1. Installation is made in sequence, return to removal. Check correctness of installation of vacuum hoses.