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
   5.2. General information
   5.3. Repair operations on the engine established in the car
   5.4. Check of pressure of compression
   5.5. Top dead point (VMT) of the piston of the first cylinder
   5.6. Cover of a head of the block of cylinders
   5.7. Pulley cranked shaft / quencher of krutilny fluctuations and nave
   + 5.8. Covers of a driving chain
   5.9. Check and replacement of a driving chain
   + 5.10. Mechanism of a tension of a driving chain, asterisk and uspokoitel of a chain
   5.11. Boot of the mechanism of a tension
   5.12. Mechanism of adjustment of a camshaft
   5.13. Camshafts and pushers
   5.14. Check and adjustment of provision of camshafts
   5.15. Head of the block of cylinders
   5.16. Oil pallet
   5.17. Oil pump chain and drive
   5.18. Drive flywheel / plate
   5.19. Replacement of sealing rings
   5.20. Bearing replacement in an end face of a cranked shaft
   5.21. Check and replacement of a support of the power unit
   5.22. Oil radiator
+ 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






5.6. Cover of a head of the block of cylinders

MODELS WITH FUEL SYSTEM CIS

Removal

Removal of a casing of the distributor of ignition on models with system of injection of CIS fuel

Unscrewing of screws of fastening of a cover of spark plugs

Removal of a cover of spark plugs from a head of the block of cylinders on models with system of injection of CIS fuel

Removal of high-voltage wires from spark plugs on models with system of injection of CIS fuel

Unscrewing of bolts of fastening of a cover of a head of the block of cylinders on models with system of injection of CIS fuel

Removal of a cover of a head of the block of cylinders on models with system of injection of CIS fuel

PERFORMANCE ORDER
1. Remove a weight wire from the accumulator.
2. Remove the air filter.
3. At existence uncover a plait of wires the engine.
4. Weaken a collar and remove a hose of ventilation of a case on the left side of a cover of a head of the block of cylinders (see fig. Removal of a hose of ventilation of a case from a cover of a head of the block of cylinders on models with system of injection of CIS fuel).
5. Press brackets of fastening and remove a casing of the distributor of ignition from a cover of a head of the block of cylinders (see fig. Removal of a casing of the distributor of ignition on models with system of injection of CIS fuel).
6. Unscrew screws and uncover spark plugs a cover of a head of the block of cylinders (see fig. Unscrewing of screws of fastening of a cover of spark plugs, Removal of a cover of spark plugs from a head of the block of cylinders on models with system of injection of CIS fuel).
7. Mark and remove high-voltage wires from spark plugs (see fig. Removal of high-voltage wires from spark plugs on models with system of injection of CIS fuel). Take high-voltage wires from fastening brackets on a cover of a head of the block of cylinders.
8. Gradually and evenly unscrew bolts of fastening of a cover of a head of the block of cylinders. Thus note an arrangement of bolts as they have different length (see fig. Unscrewing of bolts of fastening of a cover of a head of the block of cylinders on models with system of injection of CIS fuel).
9. Uncover heads of the block of cylinders a head of the block of cylinders (see fig. Removal of a cover of a head of the block of cylinders on models with system of injection of CIS fuel).
10. Remove laying of a cover of a head of the block of cylinders and consolidation from openings for spark plugs in the central part of a cover.

Installation

PERFORMANCE ORDER
1. Clear interfaced surfaces of a cover of a head of the block of cylinders and a head of the block of cylinders. Check a condition of laying and consolidations of a cover of a head of the block of cylinders and, if necessary, replace them in a set.
2. Installation is made in sequence, return to removal.

MODELS WITH SYSTEM OF INJECTION OF HFM FUEL

Removal

PERFORMANCE ORDER
1. Remove a weight wire from the accumulator.
2. Remove the ignition coil.
3. Remove plastic covers in the top part of a cover of a head of the block of cylinders.
4. Evenly and gradually unscrew bolts of fastening of a cover of a head of the block of cylinders and take them together with adjusting plugs.
5. Uncover heads of the block of cylinders.
Remove cover laying, consolidation from openings under spark plugs in the center of a cover and semicircular consolidation in a back part of a head of the block of cylinders.

Installation

PERFORMANCE ORDER
1. Clear interfaced surfaces of a cover and a head of the block of cylinders. Check a condition of laying and consolidations and, if necessary, replace them in a set.
2. Installation is made in sequence, return to removal.