Mercedes M-Class W163

since 1997 release

Repair and operation of the car

Mercedes W163
+ Mercedes-Benz cars of a class M (W163)
+ Governing bodies and methods of safe operation
+ Current leaving and service
- Engine
   Check of compression pressure in cylinders
   Check of the engine by means of the vacuum gage
   Replacement of a belt of the drive of auxiliary units and elements of the mechanism of its tension
   - Petrol models
      Removal and installation of the engine
      Removal and installation of covers of the GRM drive
      Replacement of a gas-distributing chain
      Removal and installation of components of the GRM drive
      Installation of basic position of camshafts
      Verification of the basic provision of a balancing shaft (only series 112 engines)
      Removal and installation of the GRM components
      Removal and installation of a head(s) of cylinders
      Removal and installation of the inlet pipeline
      Removal and installation of a final collector
      Removal and installation of a face cover, replacement of a back epiploon of a bent shaft
      Removal and installation of a damper of tortional fluctuations / pulley of a driving belt
      Removal and installation of a flywheel / driving disk
      Removal and installation of support of a suspension bracket of the power unit
      Service of the lubrication system
   + Diesel models
+ Cooling systems, heating and air conditioner
+ A power supply system and production of the fulfilled gases
+ Systems of electric equipment of the engine
+ Manual box of gear shifting
+ Automatic transmission
+ Transmission line
+ Brake and auxiliary systems
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment

Verification of the basic provision of a balancing shaft (only series 112 engines)

Verification of the basic provision of a balancing shaft (series 112 engines)


  1. Illustrative material on verification of the basic provision of a balancing shaft on engines of a series 112 is presented on an illustration to which all references which are found in the text belong.
  2. Remove transmission assembly (see the Head Automatic transmission).
  3. Remove a driving disk (see the Section Removal and installation of a flywheel / a driving disk).
  4. Uncover a head of cylinders.
  5. On the engines equipped with the air pump remove the right combined valve.

Sealing laying of the combined valve is subject to replacement without fail.

  1. Deploy the engine in situation 40 ° after VMT of the piston of the first cylinder.
  2. Check basic position of camshafts (see the Section Installation of Basic Position of Camshafts).
  3. Establish blocking plates (2) on the right and left heads of cylinders, having filled them in grooves (1) of camshafts.
  4. At the correct installation of a balancing shaft the opening (3) in a back counterbalance (4) has to be combined with a nest in an engine case, - fill in openings a pin with a dimeter of 8.40 ÷ of 8.55 mm. Make sure also of combination risks (V) on a forward counterbalance with a pin (A) in a case, - risk and a pin are located in about 22 cm below the interfaced surface of a head and are looked through through a window in the left cover of the GRM drive.
  5. At violation of basic installation the balancing shaft needs to be replaced.
  6. Working as it should be the return to a dismantle order, install into place all being removed components.