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)
   + 8-cylinder petrol engines (M119.970/981 and M119.971/981)
   - 12-cylinder petrol engines (M120.980/982)
      The air cleaner - installation details
      Covers of heads of the block of cylinders
      Removal and installation of the inlet pipeline
      Removal and installation of a final collector
      The valve of recirculation of the fulfilled gases - installation details
      Air supply pump
      Removal and installation of the top forward covers
      Heads of the block of cylinders
      Removal and installation of a cover of a chain of the GRM drive
      Replacement of a chain of the GRM drive
      The GRM drive - the general information, service of components
      Natyazhitel of a GRM drive chain
      Camshaft regulator
      Removal and installation of camshafts
      Check of phases of gas distribution
      Check and adjustment of position of camshafts
      Replacement of the directing plugs of valves
      Measurement of diameters of cylinders
      Removal and installation of pistons
      Check of rods
      Removal and installation of a bent shaft
      Removal and installation of the pallet of a case of the engine
      The oil level sensor switch - installation details
      The oil pump - a design and details of installation
   + 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

79c5991e

Removal and installation of camshafts

Removal

Details of installation of camshafts


 PERFORMANCE ORDER

1. Remove forward top covers (30) and (30a).
2. Remove the directing levers of heads of the block of cylinders (40).
3. Turn off an asterisk (3) of the final camshaft of the left head of the block of cylinders.
4. Using a key, install camshafts so that cams of cylinders (3) and (9), respectively, (arrow) held hydrocompensators on average situation.
5. Turn off bolts of fastening of covers of camshafts, except cylinders (3) and (9) (arrow) and remove them. Uncover (15) together with the left inlet camshaft (9).
6. Weaken bolts of fastening of covers No. 3 and No. 9 (arrow) serially on one turn and remove them.
7. Remove inlet camshafts.
8. Check hydrocompensators.

Installation

 PERFORMANCE ORDER

1. Oil all bearings and hydrocompensators motive.
2. Install inlet and final camshafts in the axial bearing.
3. Establish covers of bearings of camshafts (arrow) of cylinders (3) and (9) (are not shown by shooters on an illustration) and tighten bolts serially on one turn.
4. Hold camshafts by means of a key (25) at a wraparound of bolts of fastening of covers No. 3 and No. 9 so that cams were directed down.
5. Establish covers of other bearings and tighten bolts of fastening (arrow).

Code designations of camshafts are given in Specifications.

Designation of covers of bearings of camshafts

Designation of covers of camshafts

4 and 11 — Covers of axial bearings of the right head of the block of cylinders
18 and 25 — Covers of axial bearings of the left head of the block of cylinders