Mercedes S-class W202

1993-2000 of release

Repair and car operation



Mercedes W202
+ 1.2. The general data
+ 2. Maintenance service
- 3. Engines
   3.1.2. Identification number
   + 3.1.3. The engine
   3.1.4. Cars with the conditioner
   3.1.5. The bottom cover of a motor compartment
   3.1.6. Covers of cast apertures
   3.1.7. Натяжитель chains
   + 3.1.8. A cover of a head of the block of cylinders
   - 3.1.9. A head of the block of cylinders
      3.1.9.2. The engine обьемом 2,2 l
      - 3.1.9.3. The 6-cylinder engine
         3.1.9.3.1. Removal
         3.1.9.3.2. Installation
   + 3.1.10. Camshafts
   3.1.11. Hydraulic тарельчатые 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. A compression
   + 3.1.17. A klinovyj belt
   3.1.18. Diagnostics of malfunctions (DB)
   3.1.19. Broad-brush observations
   3.1.20. Repair work without engine dismantle
   + 3.1.21. Engine major repairs
   + 3.2. The diesel engine (ДД)
   3.2.3. Cars with the conditioner
   3.2.4. The bottom cover of a motor compartment
   3.2.5. Covers of cast apertures
   3.2.6. Натяжитель chains
   + 3.2.7. A camshaft
   + 3.2.8. A head of the block of cylinders
   + 3.2.9. Maslootrazhatelnye caps
   3.2.10. A cover of a head of the block of cylinders (2,2/2,5)
   3.2.11. Hydraulic тарельчатые 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. A head of the block of cylinders and the motor block
   3.2.16. A compression
   3.2.17. Клиновой a ridge belt
   3.2.18. The pulling device клинового a ridge belt
   3.2.19. Diagnostics of malfunctions (ДД)
+ 4. Greasing system
+ 5. Cooling system
+ 6. Heating, ventilation
+ 7. Ignition system
+ 8. Fuel system
+ 9. Transmission
+ 10. A running gear
+ 11. A steering
+ 12. Brake system
+ 13. A body
+ 14. An electric equipment
+ 14.2. Electroschemes







3.1.9.3. The 6-cylinder engine
THE GENERAL DATA

The head of the block of cylinders understands only at the cooled engine. Inlet and final collectors remain connected.

The defective sealing lining can be distinguished on a number of signs.

Removal
PERFORMANCE ORDER
1. Remove the air filter.
2. Merge cooling liquid, as well from the case of a cranked shaft.
3. Disconnect hoses of heating and cooling liquid from a head of the block of cylinders, having weakened preliminary шланговые collars.
4. Disconnect a wire of weight of the battery (–).
The prevention

The anticreeping code of radio is thus erased. Instructions to subsection about battery removal see.


5. Establish the first cylinder of the engine in ВМТ ignitions. For this purpose translate a transmission on idling and tighten a lay brake. Turn a cranked shaft before coincidence of marks by means of a wrench with nozzle SW27 for the central bolt of a belt pulley of a cranked shaft in a direction of rotation of the engine, i.e. Clockwise.
6. Extend fixing ledge of a ring of a casing of the fan. Turn a covering in an arrow direction "open" and take.
7. Uncover heads of the block of cylinders.
8. Remove натяжитель chains.
The prevention

Натяжитель chains should be removed, because at withdrawal of the top tyre it automatically sips a ratchet. It can lead to an excessive tension of a chain.


9. Unscrew рециркуляционный the pipeline of a hot liquid (25) from запорной covers (28) if it is available.
10. Disconnect штеккерные connections of the item gauge of a camshaft.
11. Unscrew pulling roller of the shock-absorber from a forward cover, push out downwards and turn. Track an adjoining washer, do not forget to establish it at the subsequent assemblage.
12. Unscrew bolts (arrow) of a forward cover. Uncover with bolts ().
13. Unscrew bolts (d) рециркулятора a cooling liquid if they are available.
14. Mark position of gear wheels of a camshaft in relation to an operating chain by means of a felt-tip pen or a paint.
15. Ослабьте bolts (3) by-pass wheels (1) if it is available.
The prevention

The bolt has the left carving, twists to the right.


16. Remove details together with a support (2).
17. Extend fingers of directing tyres a pusher or other suitable tool.
18. Unscrew an anchor of a regulator of a camshaft.
19. Dismantle the complete set of the wires going to the engine, namely, all connectors of wires ослабьте and remove together with штеккерными connections.
20. Disconnect the mechanism темпомата if it is available.
21. Disconnect штеккерное connection in a socket place (Х26/17). Disconnect штеккерное connection of an executive link of an electronic pedal of an accelerator (16/1х1) for what press a lock latch (marksman). Thus штеккер turns by means of a spiral spring on 90 . Take the complete set of wires of the engine from the cable channel.
22. Unscrew a forward exhaust pipe from a final collector.
23. Unscrew a hose всасывания air (1) on a head of the block of cylinders.
24. Disconnect a hose from the return valve всасывания air (marksman), unscrew the holder.
25. Unscrew the holder of a directing tube of a measuring instrument of level of oil and a support of an inlet pipe (arrow).
26. Disconnect a hose of ventilation (43) картера a cranked shaft from the combined support (17).
27. For a short while open a stopper of a fuel tank to lower excessive pressure. Then unscrew топливопроводы (arrows).
28. Unscrew a hose of depression (2) from tap of an inlet pipe.
29. Disconnect a cable of management throttle заслонкой (30) from a branch pipe throttle заслонки.
30. At an automatic transmission: unscrew from a head of the block of cylinders directing tube of a core of measurement of level of oil.
31. Unscrew a key with a nozzle, for example, HAZET 990SLg-12, bolts of a head of the block of cylinders in an order, the return numberings in drawing, i.e. From 14 to 1. The cylinder 1 is aside engine ventilation.
32. Преподнимите a head of the block of cylinders by means of the repair crane. For this purpose pass in eyes a corresponding cable or a rope.

Installation

PERFORMANCE ORDER
1. Before installation of a head of the block of cylinders and the block of cylinders clear sealing surfaces of the hermetic rests approaching шабером. Track, that the hermetic rests have not got to apertures. Close apertures a rag.
2. Check up a steel ruler planeness of a head of the block of cylinders and the motor block in a longitudinal and cross-section direction, if necessary finish (work for repair shops).
3. Check up a head of the block of cylinders on absence of scratches, and a working surface of cylinders – on absence рисок.
4. Carefully clear apertures under bolts of a head of the block of cylinders of oil and other adjournment.
5. Necessarily replace a sealing lining of a head of the block of cylinders.
6. Impose a new sealing lining without hermetic so that apertures have not been closed.
7. Before installation of a head of the block of cylinders check up, whether there are camshafts in position ВМТ. In this position it is possible to establish pins (1) diameter of 4 mm directly from above an upper edge of a head of the block of cylinders in flanges of gear wheels of camshafts. The cranked shaft also still should be in position ВМТ.
8. Establish a head of the block of cylinders.
The prevention

The head of the block of cylinders is fixed by adjusting pins in the block of cylinders.


9. Measure length of bolts of a head of the block of cylinders from a bottom edge of a head of a bolt which at new installation makes length of 160 mm. At length of 162,7 mm replace bolts.
10. Grease a carving of a head of the block of cylinders and a place прилегания heads of bolts. Establish bolts and twirl them manually.
11. Tighten bolts in heads of the block of cylinders in sequence from the first to 14th in three stages. At first wrap bolts динамометрическим a key with the moment 55 Н.м. At the second stage all bolts with 1 on 10 tighten on 90 рожковым a key. On the third – tighten further bolts with 1 on 10 for 90 рожковым a key.

The prevention

Carefully tighten bolts of a head of the block of cylinders. Before a tightening check up accuracy динамометрического a key.

At a tightening of bolts for an estimation of an angle of rotation arrange the handle of a key along the engine and turn one movement while the handle will not settle down across the engine.


12. Impose a management chain on gear wheels of camshafts, observing the marks put at dismantling.
13. Take pins in diameter of 4 mm from flanges of camshafts.
14. Connect a hose of a cooling liquid to the pump of a cooling liquid and fix шланговой a tape.
15. Attach a cable of management throttle заслонкой and adjust it.
16. Connect the mechanism темпомата if it is available.
17. An automatic transmission: screw directing tube of a measuring instrument of level of oil behind a head of the block of cylinders.
18. Screw up together return and direct pipelines of fuel, do not press a place of their connection.
19. Screw the pipeline of depression for the braking amplifier on an inlet pipe. Put on a ventilation hose картера a cranked shaft the combined support and fix шланговым a collar.
20. Screw the holder of a directing tube of a measuring instrument of level of oil and a support of an inlet pipe.
21. Establish the pipeline всасывания air with подсоединительным a hose to a head of the block of cylinders. Between the pipeline and a head of the block of cylinders use a new sealing ring.
22. Put on electric штеккер for the complete set of wires of the engine and lay in the cable channel. Establish a connector of wires.
23. Screw an anchor on a regulator of camshafts.
24. Screw with the moment 35 Н.м. A by-pass gear wheel of a chain with a support if it is available (the left carving).
25. Insert into the motor block fingers of directing tyres.
26. For hermetic sealing in a fat-free flute of a cover of the operating case at the left and on the right on a joint (marksman) with a head of the block of cylinders according to points put hermetic, Mercedes-N001 9896120. Instead of it it is possible to use also other hermetic, for example, Omnifit FD 10 or Curil.
27. Enclose in a fat-free flute a new sealant without hermetic. A forward cover in its places прилегания to a head of the block of cylinders cover with hermetic 002 989 00 20 10.
28. Establish a forward cover with the inserted bottom bolt (). Tighten the bottom bolts at first with the moment 20 Н.м.
29. Screw the device of regulation of camshafts, a carving of bolts of fastening (f) загерметизируйте hermetic, for example, Curil.
30. Grease with engine oil a radial sealing ring and put on a camshaft. That the sealing ring was not damaged on edge, preliminary paste over with a tape elements of connection of a camshaft, remove a tape after installation of a sealing ring. Specialised workshops instead have the introduction plug in diameter of 20 mm.
31. Fasten from above the device of a tension of the shock-absorber with a lining.
32. Screw рециркулятор a cooling liquid if it is available.
33. Attach electric штеккеры to the item gauge and a regulator of camshafts.
34. Establish натяжитель chains.
35. Establish a ring of a casing of the fan, turn it and fix.
36. Establish a cover of a head of the block of cylinders.
37. Connect штеккерами spark plugs to ignition coils.
38. Establish the air filter.
39. Screw on a collector an exhaust pipe.
40. Connect hoses of a cooling liquid to a head of the block of cylinders and fix collars.
41. Fill in cooling liquid.
42. Connect the storage battery.
43. Expose time for hours.
44. Set an anticreeping code of radio.
45. Warm up the engine to its working temperature and check up tightness of all connections.