Mercedes C-Class

W203 since 2000 of release

Repair and car operation


Mercedes-Benz
+ Mercedes-Benz Cars of a class C (W-203)
+ Operation manual
+ Routine maintenance
- Engine
   Compression check in engine cylinders
   Engine check by means of the vacuum gage
   Removal and installation of a cover of an impellent compartment from the bottom
   - 4-cylinder petrol engines
      Removal and installation of a head of cylinders
      Removal and installation of a cover of a head of cylinders
      Removal and installation of a natyazhitel of a chain
      Replacement of chains of a drive of GRM and installation of phases of a gazoraspredeleniye
      Check of phase installation of camshafts
      Removal and installation of a maple belt
   + 6-cylinder petrol engines
   + Diesel engines
   + System of greasing of the engine
+ cooling and heating Systems
+ Power supply system and release
+ engine Electric equipment
+ Manual transmission
+ Automatic transmission
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment





Replacement of chains of a drive of GRM and installation of phases of a gazoraspredeleniye

Scheme of a chain drive of the gas-distributing mechanism (GRM) and stages of procedure of installation of phases of a gazoraspredeleniye. Ryadny petrol engine 111


Engine 111.955

Special tools:

The adaptation for camshaft fixing - No. 111589031500.
Camshaft key - No. 111589014000.
Stripper of a pulley/nave of a cranked shaft - No. 000589883300.
Stripper of an asterisk of a cranked shaft - No. 615589013300.
The adaptation for flywheel blocking - No. 601589024000.
Bolts for fixing of a blokirator of a flywheel – М6 x 90 mm.
Adaptations for chain fixing on asterisks of camshafts - No. 111589196100.
Tool kit for chain service - No. 602589024000.
Divider of links of a gas-distributing chain (element 1) - No. 602589023300.
Divider of links of a gas-distributing chain (element 2) - No. 602589056300.
Divider of links of a gas-distributing chain (element 3) - No. 602589056301.
The adaptation for joining of links of a chain - No. 602589003900.
Set of dies for joining of links of a chain - No. 112589096300.
Tool box - No. 602589009800.
The holder of a pulley of the vyazkostny coupling (type 1) - No. 119589024000.
The holder of a pulley of the vyazkostny coupling (type 2) - No. 120589020100.
Key for fixing of the vyazkostny coupling - No. 111589020100.

General measures of precaution

 PERFORMANCE ORDER

1. Disconnect a negative wire from the battery.
2. Turn out spark plugs for the purpose of simplification of a provorachivaniye of the engine.
3. If the return is not stipulated especially, turn the engine only in the normal direction.
4. Familiarize with the requirements shown to efforts of a tightening of carving connections.
5. At the corresponding complete set mark position of the CKP sensor before its removal.
6. Do not turn a cranked shaft by means of asterisks of a drive of camshafts or other devices.
7. Do not turn cranked and camshafts at the removed chain of a drive of GRM.

Procedures of installation of phases of a gazoraspredeleniye

Replacement of a gas-distributing chain can be made without engine removal. By means of listed below tools the new chain can be connected to old, is thrown asterisks and riveted.

The nut of the vyazkostny coupling has a left foreign carving.

Bolts of fastening of a regulator of an inlet camshaft and asterisk of a final shaft [9] are subject to replacement without fail.


 PERFORMANCE ORDER

1. Bring the piston of the first cylinder [1] into situation 20 ° after VMT.
2. Make sure that cams of a drive of valves of the first cylinder of both camshafts are developed by working ledges up.
3. Establish on camshafts blocking adaptations [2].

In case of need correct the provision of a cranked shaft within admissible ranges (20 ÷ 30 ° after VMT when blocking an inlet shaft and 25 ÷ 35 ° after VMT when blocking a final shaft) for the purpose of simplification of installation of blokirator a little. Remember that the provorachivaniye of an asterisk of a camshaft on one tooth leads to shift of a cranked shaft approximately on 20 °.

4. On engines with adjustment of an inlet camshaft track, that during chain replacement uvulas of a regulator remained in the situation "delays" [3].

Violation of correctness of assembly can bring to internal damages of the engine as a result of blow of valves about the bottoms of pistons!

5. Before starting performance of repair procedures, weaken on one turn a nut of a natyazhitel [4] and remove assembly of the last from the engine.
6. Give a podpruzhinenny nut of a natyazhitel [4], take a finger [5] and a spring [6], then wring out a plunzher [7] in the case of a natyazhitel [8] in the direction specified by an arrow. Check a condition of components of a natyazhitel, replace defective units.
7. Establish a natyazhitel on the engine and tighten its fixture with demanded effort (80Нм). Plant in the case [8] a plunzher [7], a spring [6] and a finger [5]. Screw a nut [4] and tighten it with effort 40Нм.
8. Grease the central bolt of a pulley of a cranked shaft and its washer. Screw a bolt and tighten it with demanded effort [10].