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
   5.9. Check and replacement of a driving chain
   - 5.10. Mechanism of a tension of a driving chain, asterisk and uspokoitel of a chain
      5.10.2. Asterisks
      5.10.3. Uspokoiteli
   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






5.10.2. Asterisks

ASTERISK OF THE CAMSHAFT, MANAGING DIRECTOR OF FINAL VALVES

Removal

Unscrewing of bolts of fastening of an asterisk of a camshaft

Removal of an asterisk from a camshaft operating final valves

PERFORMANCE ORDER
1. Uncover heads of the block of cylinders.
2. Turn a cranked shaft of the engine before combination of a label 30 ° to the top dead point on a pulley of a cranked shaft with lateral face of an arm of the sensor of an angle of rotation of a cranked shaft.
3. Remove the top cover of a driving chain.
4. Using paint, put combination labels on a link of a driving chain and an asterisk, then unscrew bolts of fastening of an asterisk (see fig. Unscrewing of bolts of fastening of an asterisk of a camshaft). Camshaft fixing from a provorachivaniye carry out a wrench for лыски behind the fifth cover of the bearing of a camshaft.
5. Remove an asterisk from a camshaft (see fig. Removal of an asterisk from a camshaft operating final valves). Remove a segment shponka or an adjusting pin from the forward end of a camshaft.
6. Take an asterisk from a driving chain and fix a chain, keeping it in constantly tense situation.

Check

PERFORMANCE ORDER
1. Check a condition of teeths on an asterisk. Teeths on an asterisk have a symmetric form and in case of development on the one hand teeths it is necessary to replace an asterisk.

Installation

PERFORMANCE ORDER
1. Check that the cranked shaft of the engine is in situation on 30 ° to the top dead point of the piston of the first cylinder.
2. Establish a segment shponka or an adjusting pin for the forward end of a camshaft.
3. Establish an asterisk in a chain, having combined earlier made labels.
4. Establish an asterisk on a camshaft and fix bolts, having tightened them the demanded moment.
5. Establish the top uspokoitel of a chain and the tension mechanism.
6. Establish a cover of a head of the block of cylinders.

ASTERISK OF THE CAMSHAFT, MANAGING DIRECTOR OF INLET VALVES

Operations on removal and installation of an asterisk of the camshaft operating inlet valves are a part of process on removal and installation of the mechanism of adjustment of the camshaft operating inlet valves.

ASTERISK OF THE INTERMEDIATE SHAFT (ENGINE 3,0)

Removal


Prevention

The bolt of fastening of an intermediate asterisk has the left carving.


Removal of an intermediate asterisk of a driving chain

PERFORMANCE ORDER
1. Remove the top cover of a driving chain.
2. Establish a wrench on лыски a camshaft behind a cover of the bearing No. 5 and turn a camshaft operating inlet valves counter-clockwise to weaken a tension of a driving chain on an intermediate asterisk.
3. For the correct repeated installation of an asterisk put on an external end face of an asterisk a label.
4. Unscrew a bolt of fastening of an intermediate asterisk (the left carving) remove an asterisk and the basic plug (see fig. Removal of an intermediate asterisk of a driving chain).

Check

PERFORMANCE ORDER
1. Check a condition of teeths on an asterisk. Teeths on an asterisk have симметрич a ny form and in case of development on the one hand teeths it is necessary to replace an asterisk.

Installation
PERFORMANCE ORDER
1. Establish the basic plug, промежуточ a ny asterisk and fix it a bolt, having tightened it the demanded moment.
2. A wrench for лыски turn a camshaft operating inlet valves clockwise to a tension of a driving chain on an intermediate asterisk.
3. Establish the top cover of a driving chain.

ASTERISK OF THE CRANKED SHAFT

Removal

Unscrewing of a bolt of fastening of an asterisk of the oil pump

Removal of an asterisk of the oil pump

Removal of an asterisk of a cranked shaft

PERFORMANCE ORDER
1. Remove the oil pallet.
2. Remove the bottom uspokoitel of a chain and a boot of the mechanism of a tension.
3. Put a label on the face of an asterisk of the oil pump, unscrew a bolt and remove an asterisk of the oil pump together with a chain (see fig. Unscrewing of a bolt of fastening of an asterisk of the oil pump, Removal of an asterisk of the oil pump).
4. Remove from a sharnirny finger a boot of the mechanism of a tension of a driving chain of the oil pump, a spring and the plug.
5. Put combination labels on a link of a driving chain and an asterisk of a cranked shaft and remove a driving chain from an asterisk.
6. Remove a segment shponka from the forward end of a cranked shaft.
7. Using a stripper, remove an asterisk from a cranked shaft (see fig. Removal of an asterisk of a cranked shaft).

Check

PERFORMANCE ORDER
1. Check a condition of teeths on an asterisk. Teeths on an asterisk have симметрич a ny form and in case of development on the one hand teeths it is necessary to replace an asterisk.

Installation

Arrangement of the ends of a spring of a natyazhitel of a chain of a drive of the oil pump

PERFORMANCE ORDER
1. Establish a segment shponka.
2. At installation of a new asterisk put on it combination labels on the same places, as on an old asterisk.
3. Heat up an asterisk of a cranked shaft to temperature 50 ° With, combine a groove in an asterisk nave with a segment shponka and establish an asterisk on a cranked shaft. Establish a driving chain on an asterisk, having combined labels on an asterisk and a chain.
4. Establish the plug, a spring and a boot of the mechanism of a tension on a sharnirny finger.
5. Pass a chain of a drive of the oil pump round a boot of the mechanism of a tension, establish an asterisk with a chain on the oil pump and fix a bolt, having tightened it the demanded moment. The convex party of an asterisk should be from the oil pump.
6. Check correctness of installation of a spring of a natyazhitel of a driving chain of the oil pump (see fig. Arrangement of the ends of a spring of a natyazhitel of a chain of a drive of the oil pump).
7. Establish a boot of the mechanism of a tension of a driving chain and the bottom uspokoitel of a chain.
8. Establish the oil pallet.