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
      5.8.2. The top cover of a driving chain (model with system of injection of HFM fuel)
      5.8.3. Bottom cover 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






5.8.2. The top cover of a driving chain (model with system of injection of HFM fuel)

GENERAL INFORMATION

Prevention

For extraction of an adjusting pin of an uspokoitel of a chain it is necessary to use an inertial hammer. At installation of the top cover of a driving chain it is necessary to use hermetic and new laying.


Removal

PERFORMANCE ORDER
1. Remove a weight wire from the accumulator.
2. Merge cooling liquid from cooling system.
3. Uncover heads of the block of cylinders.
4. Disconnect the central high-voltage wire from a cover of the distributor of ignition.
5. Unscrew the grounding tire from the top cover of a driving chain and release electric wires from brackets on a cover. Unscrew two bolts, fixing an arm and a cranked branch pipe of cooling liquid to the top cover of a driving chain and remove a cranked branch pipe.
6. Remove the top uspokoitel of a chain.
7. Remove a high-voltage wire and unscrew a plastic board from the basis of the top cover of a driving chain.
8. Unscrew the bolts, supply of cooling liquid fixing a pipe to the fan of a radiator and the water pump. Disconnect a pipe from the water pump and move it aside.
9. Disconnect the electric socket from the sensor of provision of a camshaft and the relay of the mechanism of adjustment of the camshaft operating inlet valves.
10. Disconnect vacuum tubes from the valve established on a forward part of a cover of a driving chain.
11. Unscrew a bolt, fixing a rack of the mechanism of a tension of an auxiliary driving belt to a cover of a driving chain. Note an arrangement of washers and laying for their correct repeated installation.
12. Unscrew a stopper from the top cover of the driving chain, located under a camshaft operating inlet valves.
13. Screw in an additional bolt in an adjusting pin of an uspokoitel of a driving chain.
14. Using an inertial hammer and an adapter, for a head of an additional bolt take a pin of an uspokoitel of a chain.
15. Unscrew bolts of fastening of the top cover of a driving chain. Thus the right bolt remains in a cover.
16. Remove the top cover of a driving chain.
17. Remove laying from a groove in the top part of the bottom cover of a driving chain.

Installation


Prevention

At installation of a new top cover of a driving chain it is necessary to check and, if necessary, to adjust position of the sensor of provision of a camshaft.


PERFORMANCE ORDER
1. Clear interfaced surfaces of the top cover of a driving chain and a head of the block of cylinders.
2. Put a hermetic layer in a junction of the top part of the bottom cover of a driving chain with a head of the block of cylinders.
3. Establish new laying in a groove in the top part of the bottom cover of a driving chain and grease the top surface of laying.
4. Apply a thin film hermetic on interfaced surfaces of the top cover of a driving chain and a head of the block of cylinders.
5. Establish new consolidation on a back part of a cover of a driving chain.
6. Establish the bottom right bolt in a cover, then establish a cover on a head of the block of cylinders.
7. Establish the remained bolts of fastening of a cover and gradually and evenly tighten bolts of fastening of a cover the demanded moment, since the bottom bolts.
8. Establish an adjusting pin of an uspokoitel of a chain.
9. Further installation is made in sequence, return to removal. Fill in cooling liquid in cooling system.