S-class W202 Mercedes

1993-2000 of release

Repair and car operation

W202 Mercedes
+ 1.2. General information
+ 2. Maintenance
- 3. Engines
   3.1.2. Identification number
   - 3.1.3. Engine Installation Engine ventilation Functioning
   3.1.4. Cars with the conditioner
   3.1.5. Bottom cover of a motor compartment
   3.1.6. Covers of cast openings
   3.1.7. Natyazhitel of a chain
   + 3.1.8. Cover of a head of the block of cylinders
   + 3.1.9. Head of the block of cylinders
   + 3.1.10. Camshafts
   3.1.11. Hydraulic tarelchaty pushers
   3.1.12. Maslootrazhatelnye caps
   3.1.13. Valves
   3.1.14. Directing valves
   3.1.15. Saddles of valves in a head of the block of cylinders
   3.1.16. Compression
   + 3.1.17. Klinovy belt
   3.1.18. Diagnostics of malfunctions (DB)
   3.1.19. General comments
   3.1.20. Repair work without engine dismantle
   + 3.1.21. Major maintenance of the engine
   + 3.2. Diesel engine (DD)
   3.2.3. Cars with the conditioner
   3.2.4. Bottom cover of a motor compartment
   3.2.5. Covers of cast openings
   3.2.6. Natyazhitel of a chain
   + 3.2.7. Camshaft
   + 3.2.8. Head of the block of cylinders
   + 3.2.9. Maslootrazhatelnye caps
   3.2.10. Cover of a head of the block of cylinders (2,2/2,5 l)
   3.2.11. Hydraulic tarelchaty pushers
   3.2.12. Valves
   3.2.13. Directing valves
   3.2.14. Saddles of valves in a head of the block of cylinders
   3.2.15. Head of the block of cylinders and motor block
   3.2.16. Compression
   3.2.17. Maple ridge belt
   3.2.18. Tense device of a maple ridge belt
   3.2.19. Diagnostics of malfunctions (DD)
+ 4. Greasing system
+ 5. Cooling system
+ 6. Heating, ventilation
+ 7. Ignition system
+ 8. Fuel system
+ 9. Transmission
+ 10. Running gear
+ 11. Steering
+ 12. Brake system
+ 13. Body
+ 14. Electric equipment
+ 14.2. Electroschemes

b47c026d b47c026d

3.1.3. Engine Removal


The engine is dismantled up together with a transmission by means of the crane. At all do not lower the engine down, using a montirovochny jack which can cause its heavy damages.

As from below the car possibly a detachment of some details, four steady supports which are applied also to a jack support are necessary. Before the work beginning in a motor compartment protect car wings a covering. The forward cowl at dismantle of the engine does not act in film.

The engine can be dismantled and without a transmission. Thus the points designated (*), it is not necessary to carry out. A transmission prop up a repair jack and wooden intermediate laying, then weaken connecting bolts an engine / transmission and wring out the engine from a transmission mount.

Depending on year of release and car model electric wires, hoses of depression and cooling liquid can be laid in a motor compartment differently. Before a detachment of the corresponding wire designate it a sticky tape. Dismantle of the 4-cylinder engine below is described, at dismantle of the 6-cylinder – act on sense.
1. To open a cowl, pull the basic lever (3) on the left support of a cowl in the direction of an arrow and slightly raise a cowl that the lock lever was not fixed. Take the lock lever from the right support of a cowl and establish a cowl vertically.


The left lock lever should be fixed in the top clamp.

2. Remove a covering (1) from a forward wall of a body. For this purpose unscrew a nut with a nakatny head (and) and release a rivet with a notch (b).
3. Disconnect from the storage battery a weight wire (–).


The anticreeping code of radio is thus erased.

4. Disconnect from the accumulator plusovy a wire passing from the socket of the battery to the engine, stretch it through dividing partition and put on the engine.
5. Disconnect shtekkerny connection (X27/5) of the switch of pressure of oil.
6. Unscrew a wire (30) from the socket.
7. If there is a measuring instrument of weight of air, remove it.
8. Disconnect all hoses of depression which go to the engine. For example:
     – hose (and) depression of the valve of regeneration;
     – a depression hose to the right of an inlet pipe;
     – a hose of depression of the amplifier of braking from an inlet pipe.
9. Disconnect a gas cable.
10. Open for a while a cover of a fuel tank and reduce superfluous pressure in fuel system.
11. Disconnect all electric wires conducting to the engine. For simplification of the subsequent installation previously mark wires a sticky tape. For example:
     – disconnect shtekkerny connection from a lambda probe on a forward wall of a body;
     – 2,2 l: dismantle a monitor covering behind a forward wall of a body, previously remove a plastic cover of a connector of wires;
     – 1,8/2,0 l: remove the mnogoshtyrkovy socket and the item sensor of the crankshaft, and also the depression pipeline from the PMS device;
     – disconnect separate wires from a block on the left wing, previously having uncovered a block;
     – disconnect shtekkerny connection from темпомата;
     – unscrew a "weight" cable from the holder of the block of hydraulics;
     – conditioner: disconnect an electric wire from the conditioner compressor.
12. Disconnect the cable socket and take wires from holders.
13. Pipelines of fuel (17/2) and (17/3) designate a sticky tape and remove from the fuel (17) distributor. Previously disconnect hoses with clips.


Enclose a rag as fuel thus follows.

14. Select a suitable syringe hydraulic oil from a tank of the amplifier of a steering.
15. Unscrew hoses and close jams.
16. Unscrew a retsirkulyatsionny hose (28) and a hose of a high pressure (29) for servorulevy management. In cars with adjustment on height in addition unscrew a hose of a high pressure (26) and an oil pipeline (27) for the double-circuit pump.
17. Raise the car.
18. Remove the bottom covering of a motor compartment.
19. Remove the fan with the hydraulic coupling.
20. Merge cooling liquid from a radiator.
21. Disconnect hoses of cooling liquid of a head of the block of cylinders behind and from the pump of cooling liquid in front. Previously weaken collars of fastening of hoses and disconnect completely.
22. Remove a radiator.

For cars with the conditioner at once after dismantle of a radiator establish a protective cover on the condenser.