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)
   + 12-cylinder petrol engines (M120.980/982)
   - 6-cylinder diesel engines (OM603.971)
      Air purifier - installation details
      Replacement of a belt of a drive of the generator
      Removal and installation of a natyazhitel of a belt of a drive of the generator
      Final collector - installation details
      Cover of a chain of a drive of GRM
      Camshaft
      Removal and installation of a head of the block of cylinders
      Verification of the control provision of a camshaft
      Replacement of a chain of a drive of GRM
      GRM drive - the general information, service of components
      Natyazhitel of a chain of a drive of GRM - installation details
      Removal and installation of pistons
      Check of a condition and replacement of rods
      Measurement of diameters of cylinders
      Removal and installation of sleeves of cylinders
      Check of a condition of a cranked shaft
      Removal and installation of an asterisk of a cranked shaft
      Removal and installation of the pallet of a case of the engine
      The sensor switch of level of oil - installation details
      Replacement of a chain of a drive of the oil pump
      Removal and installation of the oil pump
      Removal and installation of the case of the oil filter
   + 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 pistons

Removal

Details of installation of the piston


 PERFORMANCE ORDER

1. Remove the engine.
2. Remove a head of the block of cylinders.
3. Remove the pallet.
4. Remove the oil pump.
5. Unscrew shatunny covers (1).
6. Lift a rod (2) up together with the piston (4). If the piston is damaged, the shooter specifying the direction of movement can be invisible because of a deposit. Therefore it is necessary to remove a deposit.
7. By means of a screw-driver выпрессуйте a lock ring (5) piston fingers (6) also remove the piston (4).

Installation

 PERFORMANCE ORDER

1. Check internal diameters of heads of a rod.
2. Oil a piston finger (4) plugs of the top head of a rod.
3. Combine the piston (4) and a rod (2).
4. Press a piston finger (6) by hand.
5. Insert a lock ring (5) piston fingers into a groove (shooter) in the piston.
6. Oil openings of cylinders, shatunny necks, loose leaves and pistons (4).
7. Establish a tension tape (7) for piston rings.
8. Establish the piston (4) an arrow in the movement direction.
9. Check shatunny bolts.
10. Establish shatunny covers (1) and tighten bolts.
11. Turn a cranked shaft and check gaps.
12. Establish the oil pump.
13. Establish the pallet.
14. Measure a piston vystupaniye. Establish laying of nominal thickness or laying of repair thickness depending on a piston vystupaniye.
15. Vystupaniye of the piston:
   On the new block of cylinders — 0.74-0.96 mm
   On the shlifovanny block of cylinders — 0.96-1.16 mm
16. Establish a head of the block of cylinders.
17. Establish the engine.