Mercedes S-Class W-140

1991-1999 of release

Repair and car operation



Mercedes S-Class
+ Mercedes-Benz Cars of a class S (W-140)
+ Operation manual
+ Routine maintenance
- Engine
   Compression check in engine cylinders
   Engine check by means of the vacuum gage
   Belt of a streaming drive of auxiliary units
   + 6-cylinder petrol engines (M104.944 and M104.990/994)
   - 8-cylinder petrol engines (M119.970/981 and M119.971/981)
      Covers of heads of the block of cylinders - installation details
      Removal and installation of the inlet pipeline
      Removal and installation of a final collector
      Removal and installation of heads of the block of cylinders
      Removal and installation of covers of a chain of a drive of GRM
      Replacement of a chain of a drive of GRM
      Check of phases of a gazoraspredeleniye
      GRM drive - the general information, service of components
      Removal and installation of a regulator of phases of a gazoraspredeleniye
      Removal and installation of camshafts
      Check and adjustment of control provision of camshafts
      Removal and installation of valves
      Replacement of directing plugs of valves
      Replacement of rings of saddles of valves
      Removal and installation of pistons
      Designation and sizes of pistons
      Check of a condition of rods
      Check of a condition of a cranked shaft
   + 12-cylinder petrol engines (M120.980/982)
   + 6-cylinder diesel engines (OM603.971)
   + 6-cylinder diesel engines (OM606.961)
+ Systems of cooling, heating
+ Power supply system and release
+ engine Electric equipment
+ gear shifting Box
+ Avtomaticheckaya transmission
+ Coupling
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment



56822268



Removal and installation of heads of the block of cylinders

Removal

Order of a tightening of bolts of fastening of a head of the block of cylinders


 PERFORMANCE ORDER

1. Lift a cowl and establish it vertically.
2. Disconnect a negative wire from the battery.
3. Merge cooling liquid.
4. Remove a belt of a drive of the generator.
5. On the left head of the block of cylinders: unscrew bolts. Disconnect a basic plate together with the pump of the amplifier of a steering (11) from the tension device and fix sideways aside with the attached tubes.
6. On the right head of the block of cylinders: unscrew the generator from an arm and fix it sideways with the attached wires.
7. Remove covers of heads of the block of cylinders.
8. Remove a forward cover of GRM.
9. Bring the engine into situation 45 ° before VMT of the piston of the first cylinder.
10. Mark the mutual provision of asterisks of camshafts and a chain of a drive of GRM.
11. Remove a natyazhitel of a chain of a drive of GRM.
12. Remove the top directing levers.
13. Unscrew asterisks of final camshafts and regulators of camshafts before removal.
14. Remove the inlet pipeline.
15. On the left head of the block of cylinders: disconnect a branch pipe of system of cooling in a back part of a head of the block of cylinders.
16. On the right head of the block of cylinders: unscrew directing pipe of the index of level of AT liquid.
17. Unscrew release system from final collectors.
18. Disconnect release system from an arm on AT.
19. On the right head of the block of cylinders: unscrew conducting from below on the right.
20. Before removal of a head of the block of cylinders turn out bolts with washers (a), (b), (c), (d), (e), (f).
21. Otpuskaniye of bolts of fastening of a head is made by means of a screw-driver insert (1) as it should be the return shown on an illustration.
22. Establish an elevating eye on a head of the block of cylinders before removal. For this purpose unscrew the second and fourth covers of bearings of a camshaft on the right and left heads, establish an eye with directing plugs.
23. Attach to elevating eyes a lifting chain, lift heads of the block of cylinders and remove them from the engine.
24. Check contact surfaces of heads of the block of cylinders.
25. Replace laying of heads of the block of cylinders. Check bolts of fastening and, if necessary, replace them.

Removal of the right head of the block of cylinders

13 — the Head of the block of cylinders
15a, 15b — Bolts with washers
17 — Elevating eyes

18 — Covers of bearings of camshafts
18a, 18f, 18 c — Directing plugs


Removal of the left head of the block of cylinders

15а, 15d, 15e — Bolts with washers
17 — Elevating eyes

18 — the Cover of the bearing of a camshaft
18a, 18f — Directing plugs

Installation

Installation is made as it should be, the return to removal. Tighten c bolts washers the moment of 25 Nanometers once when the inlet pipeline is already established. The order of a tightening of bolts of fastening of a head of the block of cylinders is shown on an illustration.