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





12.15. Electronic control system of the diesel engine

ELECTRONIC CONTROL UNIT

Removal

PERFORMANCE ORDER
1. The electronic control unit of EDS system is established in a back part of a motor compartment behind a partition.
2. Remove a weight wire from the accumulator.
3. Disconnect the multicontact electric socket from the electronic control unit.
4. Unscrew screws and remove the electronic control unit from a partition of a motor compartment.

Installation

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

OVERLOAD RELAY

Removal

PERFORMANCE ORDER
1. The relay is established on the main unit near EDS ECU. The relay contains fuses and diodes as which protection of EDS against an overload on a current and tension throws enters.
2. Remove a weight wire from the accumulator.
3. Take the relay from a nest.

Installation

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

SENSOR OF TURNS OF THE CRANKED SHAFT

Removal

PERFORMANCE ORDER
1. Remove a weight wire from the accumulator.
2. Disconnect the electric socket of the sensor of a cranked shaft which is located in a motor compartment behind the accumulator.
3. The sensor of a cranked shaft is established on an interfaced surface between the block of cylinders and a coupling case over a starter. Unscrew a bolt and remove the sensor of a cranked shaft from a coupling case. Remove laying.

Installation

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

THE SENSOR OF TEMPERATURE OF COOLING LIQUID

Removal

PERFORMANCE ORDER
1. Merge a part of cooling liquid from cooling system. Check that ignition is switched off.
2. The sensor of temperature of cooling liquid is located in the left top part of a head of the block of cylinders.
3. Disconnect the electric socket from the sensor of temperature of cooling liquid.
4. Unscrew the sensor and remove a sealing ring.

Installation

PERFORMANCE ORDER
1. Installation is made in sequence, return to removal. Add cooling liquid in cooling system.

ELECTROMAGNETIC EXECUTIVE ELR MECHANISM

Removal

PERFORMANCE ORDER
1. The electromagnetic executive ARA mechanism is fixed by bolts on a back part of the fuel pump of a high pressure. On cars, it is equipped ny with electronic control by turns of idling of ELR and антидетонаци the electromagnetic executive mechanism is located this control system of ARA below.
2. Remove a weight wire from the accumulator.
3. On models without a turbo-supercharging remove the air filter.
4. Disconnect the electric socket from the executive mechanism.
5. Unscrew two bolts and remove the case of the executive mechanism from a back part of the fuel pump of a high pressure. Remove a sealing ring and a pusher.

Installation

PERFORMANCE ORDER
1. Installation is made in sequence, return to removal. At installation of the executive mechanism establish a new sealing ring. At installation of the new executive mechanism remove from the old executive mechanism a pusher and establish on the new executive mechanism.

VACUUM VALVE OF SYSTEM OF REPEATED BURNING OF EXHAUST GASES

Look the corresponding description in subsection 13.6.

MEASURING INSTRUMENT OF THE STREAM OF AIR

Removal

PERFORMANCE ORDER
1. Remove a weight wire from the accumulator. Remove the air filter.
2. Unscrew an arm of the air filter from the case of a measuring instrument of a stream of air.
3. Weaken collars and remove air branch pipes from a measuring instrument of a stream of air. Remove sealing rings.
4. Disconnect the electric socket from a measuring instrument of a stream of air.
5. Unscrew nuts and bolts and remove a measuring instrument of a stream of air from an arm.
Prevention

Be careful also accuracy at work with a measuring instrument of a stream of air.

Installation

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

THE SENSOR OF TEMPERATURE OF AIR ARRIVING IN THE ENGINE

The sensor of temperature of air arriving in the engine is a component of a measuring instrument of a stream of air.