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
   4.2. General information
   4.3. Repair operations on the engine established in the car
   4.4. Check of pressure of compression
   4.5. Top dead point (VMT) of the piston of the first cylinder
   4.6. Cover of a head of the block of cylinders
   4.7. Pulley cranked shaft / quencher of krutilny fluctuations and nave
   + 4.8. Covers of a driving chain
   4.9. Driving chain
   + 4.10. Mechanism of a tension of a driving chain, asterisk and uspokoitel of a chain
   + 4.11. Drive of valves, pushers and camshaft
   4.12. Head of the block of cylinders
   4.13. Oil pallet
   4.14. Oil pump
   4.15. Replacement of a chain of a drive of the oil pump
   4.16. Drive flywheel / plate
   4.17. Replacement of sealing rings
   4.18. Bearing replacement in an end face of a cranked shaft
   4.19. Check and replacement of a support of the power unit
+ 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






4.9. Driving chain

Check

PERFORMANCE ORDER
1. Remove the top cover of a driving chain.
2. For a bolt of fastening of a pulley of a cranked shaft turn a cranked shaft of the engine and on all length check a chain condition. If the chain at operation of the engine publishes the increased noise or is available big axial люфт chains on an asterisk, it is necessary to replace a chain. In the presence of development on chain rollers it is also necessary to replace a chain.

Replacement


Prevention

At removal of a chain it is necessary to use a nazhdachny circle or вулканит, for cutting of coming-out hats of one of chain links.


Installation of a new chain

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


PERFORMANCE ORDER
1. Remove a weight wire from the accumulator.
2. Uncover heads of the block of cylinders.
3. Unscrew spark plugs.
4. Remove the mechanism of a tension of a driving chain.
5. Using pure rags, close a head of the block of cylinders and a chain in a cover.
6. Using a nazhdachny stone or вулканит, cut off coming-out hats of one of chain links in the top part of an asterisk.
7. Remove fixing plate of a link of a chain, then take a chain link from a driving chain.
8. Remove rags, thus be careful, that shaving did not get in a cover of a driving chain.
9. Using a link of a new chain, connect a new driving chain with old and turning a cranked shaft of the engine clockwise, pass a new chain round asterisks and directing. Thus constantly pull a new chain that its links were accurately combined with a camshaft asterisk. Also constantly support in a tension an old chain to prevent its falling from an asterisk of a cranked shaft (see drawing).
10. After an exit of a new chain from a cover of a driving chain, keeping a tension of both branches of a chain, remove an old chain from the new.
11. Establish a new chain on an asterisk of a camshaft and connect the link of a chain inserted from a back part of an asterisk.
12. Establish fixing plate on a connecting link of a chain and расклепайте it. At a rasklepyvaniye support a connecting link of a chain from a reverse side a big hammer. Be careful not to damage a chain or a camshaft asterisk.
13. After a rasklepyvaniye of a connecting link of a chain check, that on it there were no metal agnails.
14. Establish a natyazhitel of a chain.
15. Turning a cranked shaft of the engine clockwise, establish the piston of the first cylinder in the top dead point and check that all adjusting labels were combined with indexes.
16. Establish the top cover of a driving chain.
17. Connect a weight wire to the accumulator.