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
   7.2. General information
   7.3. Recommendations about engine removal
   7.4. Removal and installation of 4-cylinder petrol engines
   7.5. Removal and installation of 6-cylinder petrol engines
   7.6. Removal and installation of diesel engines
   7.7. Sequence of dismantling of the engine
   - 7.8. Analysis of a head of the block of cylinders
      7.8.2. 6-cylinder petrol SOHC engines
      7.8.3. 6-cylinder petrol DOHC engines
      7.8.4. Diesel engines
      7.8.5. Cleaning and survey of a head of the block of cylinders
      7.8.6. Valves
   + 7.9. Assembly of a head of the block of cylinders
   7.10. Removal of pistons with rods
   7.11. Removal of a cranked shaft
   7.12. Block of cylinders of the engine
   7.13. Pistons and rods
   7.14. Cranked shaft
   7.15. Survey of radical and shatunny bearings
   7.16. Engine balance of assembly at major maintenance
   7.17. Installation of piston rings
   7.18. Installation of a cranked shaft
   7.19. Check of a working gap of radical bearings
   7.20. Installation of a cranked shaft
   + 7.21. Installation of pistons with rods
   7.22. Engine start after major maintenance
+ 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






7.8. Analysis of a head of the block of cylinders

7.8.1. 4-cylinder petrol engines

GENERAL INFORMATION

Compression of a klapanny spring by the special adaptation

Removal of crackers from a valve end face

Removal of the top plate of a spring

Removal of a klapanny spring

Removal of a maslootrazhatelny cap

Removal of the bottom nest of a spring

Valve extraction via the combustion chamber

Storage of elements of one valve in a plastic bag

PERFORMANCE ORDER
1. Remove a head of the block of cylinders.
2. Remove inlet and final collectors.
3. Remove the mechanism of a drive of valves, hydraulic pushers and a camshaft.
4. Unscrew spark plugs.
5. Unscrew a thermostat casing from a head of the block of cylinders.
6. Using the adaptation for compression of a spring of the valve, compress each spring and remove crackers from a valve end face. Remove the adaptation for compression of a spring and take a plate of a spring and a spring (see fig. Compression of a klapanny spring by the special adaptation, Removal of crackers from a valve end face, Removal of the top plate of a spring, Removal of a klapanny spring).
7. Being careful, flat-nose pliers remove from a valve rod маслоотража a telny cap (see fig. Removal of a maslootrazhatelny cap).
8. When the spring of the valve is compressed and the cup of a spring does not act in film from crackers, it is necessary to strike with a hammer through wooden whetstone on a spring cup that will lead to release of crackers.
9. Take the valve via the combustion chamber. Each valve store in a separate plastic bag together with a plate of a spring, a spring, a nest of a spring and crackers for their further installation on the places (see fig. Valve extraction via the combustion chamber, Storage of elements of one valve in a plastic bag).