Mercedes S-Class W-140

1991-1999 of release

Repair and operation of the car



Mercedes S-Class
+ Mercedes-Benz cars of the class S (W-140)
+ Operation manual
+ Routine maintenance
- Engine
   Check of a compression in engine cylinders
   Check of the engine by means of the vacuum gage
   Belt of the streaming drive of auxiliary units
   - 6-cylinder petrol engines (M104.944 and M104.990/994)
      Cover of a head of the block of cylinders - installation details
      Removal and installation of the inlet pipeline with the resonator (except the engine 104.990)
      Final collector (except the engine M 104.990) - installation details
      Removal and installation of a head of the block of cylinders
      Removal and installation of a cover of a chain of the GRM drive
      The GRM drive - the general information, service of components
      Asterisk of a bent shaft - an installation detail
      Removal and installation of the regulator of the camshaft
      Removal and installation of camshafts
      Replacement of the directing plugs of valves
      Replacement of saddles of valves
      Removal and installation of pistons
      Replacement of piston rings
      Check of a condition of rods
      Check of a condition of a bent shaft
      Service of the block of cylinders
      Removal and installation of the pallet of a case of the engine
      The oil pump - installation details
      The oil level sensor switch - installation details, test data
   + 8-cylinder petrol engines (M119.970/981 and M119.971/981)
   + 12-cylinder petrol engines (M120.980/982)
   + 6-cylinder diesel engines (OM603.971)
   + 6-cylinder diesel engines (OM606.961)
+ Cooling systems, heating
+ Power supply system and release
+ Engine electric equipment
+ Gear shifting box
+ Automatic transmission
+ Coupling
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment






Removal and installation of a head of the block of cylinders

Details of installation of a head of the block of cylinders

3, 9 — Bolts
4 — the Plug
5 — an air supply Tube
6a — Perepuskna the valve
6 — the Arm of the inlet pipeline
6a — the Directing pipe of the index of level of oil

8c — the Branch pipe
8b — the Sealing ring
10 — the Head of the block of cylinders
11 — Laying
12 — the Directing fingers
41 — the Finger

Removal

 PERFORMANCE ORDER

1. Merge cooling liquid and disconnect cooling branch pipes from a head of the block of cylinders.
2. Bring the piston of the first cylinder into the provision of VMT of the end of a step of compression.
3. Remove a forward top cover.
4. Mark the provision of asterisks of camshafts concerning a chain of the GRM drive (arrow).
5. Take a finger of the directing lever or the sliding lever by means of a stripper.
6. Unscrew camshaft regulator fittings.
7. Remove a GRM drive chain from asterisks of camshafts.
8. Disconnect conducting of the engine. For this purpose weaken all coupling tapes and disconnect all sockets of conducting.
9. Disconnect draft of a tempostat.
10. Disconnect the socket of conducting (X25/17) and the socket of conducting (X16/1x1) from the electronic drive of an accelerator, press a doggie and turn it on 90 °.
11. Disconnect vacuum tubes from the inlet pipeline.
12. Turn off bolts of fastening of system of release to a flange of a final collector.
13. Disconnect a tube of the backpressure valve from a tube of admixture of air in an exhaust (shooter) and turn off an arm (1).
14. Turn off an arm of the directing pipe of the index of level of oil and an arm of the inlet pipeline.
15. Disconnect a tube (43) from an arm (17) on the block the cylinder.
16. Slowly open a cover of a jellied mouth of the fuel tank for pressure decrease in a power supply system. Turn off fuel-supply lines.
17. On models with AT: turn off the directing pipe of the index of level of oil from a back part of a head of the block of cylinders.
18. Disconnect a driving cable (30) from the control lever (9). For this purpose squeeze a plastic clip (28).
19. Weaken coupling tapes of fastening of branch pipes of the cooling system to the cooling system pump. Pick up the returnable phone.
20. Weaken bolts of fastening of a head of the block of cylinders as it should be, the return shown on an illustration. At the same time the engine has to be cold.
21. Uncover bearings No. No. 9 and 13. Establish lifting eyes and remove a head of the block of cylinders from the engine.
22. Wipe contact surfaces of a head of the block of cylinders and the block of cylinders. Replace laying of a head of the block of cylinders.

Installation

 PERFORMANCE ORDER

Installation is made as it should be, the return to removal. The order of tightening of bolts of a head of the block of cylinders is shown on an illustration.












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