Mercedes W124

since 1985-1995 of release

Repair and car operation



W124 Mercedes
+ Governing bodies and control devices
+ MAINTENANCE
+ 2. Maintenance (diesel engines)
- ENGINE
   3.2. General data
   3.3. Repair operations on the engine established in the car
   3.4. Check of pressure of compression
   3.5. Top dead point (VMT) of the piston of the first cylinder
   3.6. Cover of a head of the block of cylinders
   3.7. Pulley cranked shaft / quencher of krutilny fluctuations and nave
   + 3.8. Cover of a driving chain
   3.9. Check and replacement of a driving chain
   + 3.10. Mechanism of a tension of a driving chain, asterisk and uspokoitel of a chain
   3.11. Intermediate shaft
   + 3.12. Drive of valves, pushers and camshaft
   + 3.13. Head of the block of cylinders
   3.14. Oil pallet
   3.15. Oil pump
   3.16. Drive flywheel / plate
   3.17. Replacement of sealing rings of a cranked shaft
   3.18. Bearing replacement in an end face of a cranked shaft
   3.19. Check and replacement of a support of the power unit
+ 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
+ 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






3.6. Cover of a head of the block of cylinders

Removal


Prevention

The cover of a head of the block of cylinders acts in film together with high-voltage wires and a distributor cover. At installation of a cover of a head of the block of cylinders it is necessary to use new laying.


PERFORMANCE ORDER
1. Remove a weight wire from the accumulator.
2. Remove the air filter.
3. Weaken collars and disconnect hoses of ventilation of a case from a cover of a head of the block of cylinders. If necessary take electric wires from fastening brackets on a cover of a head of the block of cylinders and move them aside.
4. Mark and remove from spark plugs high-voltage wires.
5. Uncover the ignition distributor.
6. Unscrew bolts of fastening and uncover heads of the block of cylinders.
7. Remove laying of a cover of a head of the block of cylinders and, at existence, remove sealing laying from a lobby or a back part of a head of the block of cylinders.

Installation

Sequence of a tightening of bolts of fastening of a cover of a head of the block of cylinders

PERFORMANCE ORDER
1. Clear an internal surface of a cover of a head of the block of cylinders of oil deposits.
2. Establish sealing laying from two parties of a head of the block of cylinders.
3. Establish sealing laying in grooves of a cover and establish a cover of a head of the block of cylinders on the engine.
4. Fix a cover bolts, having tightened them the demanded moment, and a tightening carry out in the sequence shown in drawing.
5. Establish a cover of the distributor of ignition and connect high-voltage wires to spark plugs.
6. Connect hoses of ventilation of a case.
7. Establish the air filter.
8. Connect a weight wire to the accumulator.
9. Start the engine and check that there are no leakages of oil from under a cover of a head of the block of cylinders.