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
+ Cooling systems, heating
+ Power supply system and release
- Engine electric equipment
   - Systems of ignition and engine management - the general information
      Checks of a control system of ignition and injection
      Search of malfunctions - the general information and preliminary checks
      Check and adjustment of a corner of an advancing of ignition
      Spark plugs
      Self-diagnostics of systems of electronic control of OBD
      Diagnostics of electronic system of the automatic air conditioner (AC)
      Application of an oscillograph for observation of signals of a control system
      Ignition coils - installation details
      Removal, installation and adjustment of the sensor of position of the camshaft (CMP)
      The distributor of ignition (M119.97 engines) - installation details
   + Systems of a charge and start
+ Gear shifting box
+ Automatic transmission
+ Coupling
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment


Removal, installation and adjustment of the sensor of position of the camshaft (CMP)


Details of installation of the CMP sensor

1 — the Sealing ring
2 — the Adjusting washer
3 — the Bolt
4 — the CMP Sensor
5 — the Contact socket

Adjustment of a gap of the CMP sensor

1 — the Probe
2 — the CMP Sensor


1. Uncover a head of cylinders.
2. Turn out fixing bolts and remove the CMP sensor, a sealing ring and an adjusting washer.

Installation and adjustment

Failure to follow the procedure of adjustment of a gap of the new CMP sensor can lead to an exit it out of operation!


1. At installation to the place of the old sensor act as it should be, the return to an order of dismantle of components, - do not forget to replace a sealing ring.
2. At installation of the new sensor establish a sealing ring, install the sensor, then turn a bent shaft so that the segment of an asterisk of the camshaft appeared opposite to the sensor.
3. By means of the probe of lezviyny type measure gap size between the sensor and a segment of an asterisk. The required size of a gap makes 0.4-0.6 mm. In case of need make the corresponding adjustment by selection of a new adjusting washer, - washers are issued in the range of thickness from 0.1 to 1.0 mm with a step to 0.1 mm.
4. Having finished adjustment, tighten bolts of fastening of the sensor with the required effort.