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
   6.2. General information
   6.3. Repair operations on the engine established in the car
   6.4. Check of pressure of compression
   6.5. Top dead point (VMT) of the piston of the first cylinder
   6.6. Cover of a head of the block of cylinders
   6.7. Pulley cranked shaft / quencher of krutilny fluctuations and nave
   6.8. Cover of a driving chain
   6.9. Driving chain
   + 6.10. Mechanism of a tension of a driving chain, asterisk and uspokoitel of a chain
   + 6.11. Camshafts and pushers
   6.12. Head of the block of cylinders
   6.13. Oil pallet
   6.14. Oil pump and driving chain
   6.15. Drive flywheel / plate
   6.16. Replacement of sealing rings of a cranked shaft
+ 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






6.8. Cover of a driving chain

GENERAL INFORMATION

Prevention

At removal of a cover of a driving chain it is necessary to use the load-lifting mechanism. At installation of a cover hermetic application is necessary.


Removal

Arrangement of two bolts in a forward part of the fuel filter and the thermostat

Arrangement of the bottom bolt of fastening of a support of the power unit

Arrangement of bolts of fastening of the fuel pump of a high pressure to a cover of a driving chain

Arrangement of bolts of fastening of a cover of a driving chain to a head of the block of cylinders

Arrangement of bolts of fastening of a cover of a driving chain to the block of cylinders of the engine

PERFORMANCE ORDER
1. Remove a weight wire from the accumulator.
2. Open a cowl and establish it in vertical situation.
3. Remove the bottom mudguard of the engine.
4. Remove a radiator and the radiator fan assembled.
5. Remove a pulley cranked a shaft / quencher of krutilny fluctuations and a nave.

6. Remove the mechanism of a tension of an auxiliary driving belt for what execute the following actions:

a–remove a plastic cap, unscrew a bolt and remove an intermediate pulley of an auxiliary driving belt;
b–unscrew bolts and remove a pulley of the fan of a radiator;
c–unscrew bolts and remove a rack of the shock-absorber of the mechanism of a tension;
d–remove a spring of the mechanism of a tension;
e–remove the mechanism of a tension of an auxiliary driving belt.

7. Remove the vacuum pump for brake system.
8. Remove the pump of the amplifier of a steering.
9. Remove from a head of the block of cylinders the pump of system of a being self-leveled back suspension bracket.
10. Remove the generator.
11. Merge from the engine engine oil.
12. Uncover heads of the block of cylinders.
13. On models with system кондициониро vaniye of air close a thick cardboard the condenser in order to avoid its further damage.
14. Unscrew two bolts in a forward part of knot of the fuel filter and the thermostat (see fig. An arrangement of two bolts in a forward part of the fuel filter and the thermostat).
15. Unscrew a pipe for щупа measurements of level of oil from a head of the block of cylinders.
16. Unscrew bolts and remove an arm of fastening of the generator.
17. Note an arrangement and unscrew an arm of the sensor of an angle of rotation of a cranked shaft and move the sensor aside.
18. Hook on the load-lifting mechanism for a forward eye for engine lifting.
19. Working under the car from two parties of the engine, unscrew the bottom bolts of fastening of support of the power unit (see fig. Arrangement of the bottom bolt of fastening of a support of the power unit).
20. Raise the engine and unscrew bolts of fastening of the oil pallet to a cover of a driving chain and weaken the remained bolts of fastening of the oil pallet.
21. Lower the engine.
22. Unscrew three bolts of fastening of the fuel pump of a high pressure to a cover of a driving chain (see fig. An arrangement of bolts of fastening of the fuel pump of a high pressure to a cover of a driving chain).
23. Through an opening in the top part of a head of the block of cylinders unscrew two bolts, fixing a head of the block of cylinders to a cover of a driving chain (see fig. An arrangement of bolts of fastening of a cover of a driving chain to a head of the block of cylinders).
24. Unscrew the remained bolts of fastening of a driving chain and uncover (see fig. An arrangement of bolts of fastening of a cover of a driving chain to the block of cylinders of the engine).
Prevention

At removal of a cover of a driving chain it is necessary to use the load-lifting mechanism. At installation of a cover hermetic application is necessary.


25. At removal of a cover of a driving chain do not damage laying of a head of the block of cylinders and the oil pallet.

Installation

PERFORMANCE ORDER
1. Clear interfaced surfaces of a cover of a driving chain, a head of the block of cylinders and the block of cylinders.
2. Check a condition of laying of a head of the block of cylinders. In case of damage of laying it is necessary to remove a head of the block of cylinders and to replace laying.
3. Check a condition of laying of the oil pallet. If laying is damaged, it is necessary to remove the oil pallet and to replace laying. If necessary, replace a forward sealing ring of a cranked shaft.
4. For an exception of damage of working edges of a sealing ring of a cranked shaft wrap up a forward end face of a cranked shaft a sticky tape.
5. Apply a thin film hermetic on a surface of the block of the cylinders, interfaced to a cover of a driving chain.
6. Grease working edges of a forward sealing ring of a cranked shaft with pure engine oil and, being careful, establish a cover of a driving chain on the engine.
7. Screw in bolts of fastening of a cover of a driving chain and tighten them the demanded moment.
8. Through openings in the top part of a head of the block of cylinders establish bolts of fastening of a head of the block of cylinders to a cover of a driving chain and tighten them the demanded moment.
9. Remove a sticky tape from a forward end face of a cranked shaft.
10. Screw in and tighten the demanded moment bolts and nuts of fastening of the fuel pump of a high pressure.
11. Raise the engine, screw in bolts of fastening of the oil pallet to a cover of a driving chain and tighten them the demanded moment.
12. Lower the engine and screw in the bottom bolts of fastening of support of the power unit.
13. According to earlier made labels, establish an arm of the sensor of an angle of rotation of a cranked shaft.
14. Establish an arm of fastening of the generator.
15. Fix a pipe for щупа measurements of level of oil to a head of the block of cylinders.
16. Establish the fuel filter.
17. Establish a cover of a head of the block of cylinders.
18. Establish the generator.
19. Establish on a head of the block of cylinders the pump of system of a being self-leveled back suspension bracket.
20. Establish the pump of the amplifier of a steering.
21. Establish the vacuum pump of brake system.
22. In sequence, to return to removal, establish the mechanism of a tension of an auxiliary driving belt.
23. Establish a nave and a pulley cranked a shaft / quencher of krutilny fluctuations.
24. Establish knot of the fan of a radiator and a radiator.
25. Establish the bottom mudguard of the engine.
26. Fill in engine oil in the engine.
27. Connect a weight wire to the accumulator.