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
      + 3.10.2. Asterisks
      + 3.10.3. Uspokoiteli 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






3.10. Mechanism of a tension of a driving chain, asterisk and uspokoitel of a chain

3.10.1. Mechanism of a tension of a driving chain

Removal

At installation of a new chain constantly support both branches of a chain in the tense situation.

Unscrewing of a kolpachkovy nut from the case of the mechanism of a tension of a driving chain

Extraction of a spring and sealing ring from the mechanism of a tension of a driving chain

Mechanism of a tension of a driving chain
1–kolpachkovy nut;
2–sealing ring;
3–spring;
4–bracket;
5–plunzher;
6–case

The direction of extraction of a plunzher with a bracket from the case of the mechanism of a tension of a driving chain
1–case;
2–plunzher;
3–bracket

PERFORMANCE ORDER
1. Remove a weight wire from the accumulator.
2. Remove an auxiliary driving belt.
3. For improvement of access to the mechanism of a tension of a driving chain remove the generator.
4. From the right forward party of the engine unscrew a kolpachkovy nut from the case of the mechanism of a tension of a driving chain and take a spring and a sealing ring (see fig. Unscrewing of a kolpachkovy nut from the case of the mechanism of a tension of a driving chain, Extraction of a spring and a sealing ring from the mechanism of a tension of a driving chain).
Prevention

When unscrewing a kolpachkovy nut be careful, as the nut is influenced by strongly compressed spring.


5. Unscrew the case of the mechanism of a tension of a driving chain from the block of cylinders of the engine (see fig. Mechanism of a tension of a driving chain).
6. Take a plunzher with a bracket from the case of the mechanism of a tension of a driving chain (see fig. The direction of extraction of a plunzher with a bracket from the case of the mechanism of a tension of a driving chain).

Replacement

PERFORMANCE ORDER
1. Clear details of the mechanism of a tension of a driving chain and check lack of wear on a plunzher and the case.
2. Check a condition of a bracket and a spring of the mechanism of a tension and, if necessary, replace them.

Installation

Arrangement of a plunzher in the case of the mechanism of a tension of a driving chain
1–the provision of a plunzher at installation;
2–the direction of extraction of a plunzher from the case

PERFORMANCE ORDER
1. Screw in the case of the mechanism of a tension of a driving chain in the block of cylinders and tighten it the demanded moment.
2. Insert a plunzher with a bracket into the case of the mechanism of a tension of a driving belt against the stop brackets in a fillet of an internal cavity of the case (see fig. An arrangement of a plunzher in the case of the mechanism of a tension of a driving chain).
3. Insert a spring into the case, establish on a kolpachkovy nut a new sealing ring and, overcoming resistance of a spring, screw a kolpachkovy nut and tighten it the demanded moment.
4. Establish the generator.
5. Establish an auxiliary driving belt.
6. Connect a weight wire to the accumulator.