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. Covers of a driving chain

5.8.1. The top cover of a driving chain (model with system of injection of CIS fuel)

GENERAL INFORMATION

Prevention

At installation of the top cover of a driving chain it is necessary to use hermetic and new laying.


Removal

Unscrewing of bolts of fastening of a cover of the distributor of ignition on models with system of injection of CIS fuel

Removal of a rotor of the distributor of ignition

Unscrewing of a bolt of fastening of a rotor of the distributor of ignition

Filter removal on models with system of injection of CIS fuel

Unscrewing of a plastic board on models with system of injection of CIS fuel

Removal of a sealing ring of round section
After a detachment of a pipe of cooling liquid from the water pump remove from a pipe a sealing ring of round section.

Detachment of the electric socket from the sensor of provision of a camshaft

Removal of the sensor of provision of the camshaft operating inlet valves on models with system of injection of CIS fuel

Unscrewing of the bolt, the mechanism of a tension of an auxiliary driving belt fixing a rack to a cover of a driving chain on models with system of injection of CIS fuel

Unscrewing of bolts of fastening of the top cover of a driving chain on models with system of injection of CIS fuel

Unscrewing of two bolts of fastening of a cover of a driving chain which also fix an engine support

Removal of the top cover of a driving chain

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 bolts of fastening and uncover the ignition distributor (see fig. Unscrewing of bolts of fastening of a cover of the distributor of ignition on models with system of injection of CIS fuel). Move a cover of the distributor of ignition aside, without disconnecting from it the remained high-voltage wires.
6. Unscrew screws and remove a distributor rotor (see fig. Removal of a rotor of the distributor of ignition).
7. Unscrew the central bolt and remove a drive of a rotor of the distributor of ignition (see fig. Unscrewing of a bolt of fastening of a rotor of the distributor of ignition).
8. Remove the filter and consolidation from the top cover of a driving chain (see fig. Filter removal on models with system of injection of CIS fuel).
9. Remove the top uspokoitel of a chain.
10. Remove a high-voltage wire and unscrew a plastic board from the basis of the top cover of a driving chain (see fig. Unscrewing of a plastic board on models with system of injection of CIS fuel).
11. 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 (see fig. Removal of a sealing ring of round section).
12. 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 (see fig. A detachment of the electric socket from the sensor of provision of a camshaft, Removal of the sensor of provision of the camshaft operating inlet valves on models with system of injection of CIS fuel).
13. Unscrew an intermediate pulley of an auxiliary driving belt.
14. Unscrew a bolt, a fixing arm of a wire of a high voltage to the bottom cover of a driving chain.
15. From the top cover of a driving chain unscrew a stopper placed under a camshaft, operating inlet valves.
16. Unscrew a nut and a bolt, fixing an arm of a vacuum hose of the vacuum amplifier of brakes to a forward support of the engine.
17. Unscrew a bolt, fixing to a drain of the mechanism of a tension of an auxiliary driving belt to a cover of a driving chain (see fig. Unscrewing of the bolt, the mechanism of a tension of an auxiliary driving belt fixing a rack to a cover of a driving chain on models with system of injection of CIS fuel). Note an arrangement of washers and laying for the correct repeated installation.
18. On models with a cranked branch pipe of system of the cooling, established in the center of the top cover of a driving chain disconnect from a cranked branch pipe a hose, unscrew bolts and remove a cranked branch pipe.
19. Unscrew bolts of fastening of the top cover of a driving chain. Thus keep in mind that the bottom right bolt remains in a cover. Two bolts, fixing the top cover of a driving chain also fix a forward support of the engine (see fig. Unscrewing of bolts of fastening of the top cover of a driving chain on models with system of injection of CIS fuel, Unscrewing of two bolts of fastening of a cover of a driving chain which also fix an engine support).
20. Remove the top cover of a driving chain together with the bottom right bolt (see fig. Removal of the top cover of a driving chain).
21. Remove laying from a flute in the top part of the bottom cover of a driving chain.

Installation

Installation of a new sealing ring of the camshaft operating final valves

Installation of new laying in a groove of the bottom cover of a driving chain

PERFORMANCE ORDER
1. Clear interfaced surfaces of the top cover of a driving chain and a head of the block of cylinders.
2. Replace a sealing ring of the camshaft operating final valves, located in a cover of a driving chain (see fig. Installation of a new sealing ring of the camshaft operating final valves).
3. Measure depth of installation of a sealing ring, then, using a screw-driver edge, take a sealing ring from the top cover of a driving chain.
4. Clear a nest of a sealing ring in the top cover of a driving chain.
5. Using a tubular opravka of the corresponding diameter, establish a new sealing ring in a nest on earlier measured depth.
6. Not to damage working edges of a sealing ring at installation of a cover of a driving chain, wrap up a sticky tape a forward end face of the camshaft operating final valves.
7. Put a hermetic layer on a junction of the top part of the bottom cover of a driving chain with a head of the block of cylinders.
8. Establish new laying in a groove in the top part of the bottom cover of a driving chain. Grease the top party of laying (see fig. Installation of new laying in a groove of the bottom cover of a driving chain).
9. Apply a thin film hermetic on interfaced surfaces of a head of the block of cylinders and the top cover of a driving chain.
10. Establish the bottom right bolt in a cover of a driving chain, then establish a cover on a head of the block of cylinders.
11. Establish the remained bolts of fastening of a cover and evenly and gradually tighten them the demanded moment, since the bottom bolts.
12. Remove a sticky tape from a forward end face of the camshaft operating final valves.
13. Further installation is made in sequence, return to removal. Fill in cooling liquid in cooling system.