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
   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
      3.1.9.2. Engine in volume of 2,2 l
      - 3.1.9.3. 6-cylinder engine
         3.1.9.3.1. Removal
         3.1.9.3.2. Installation
   + 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


3.1.9.3. 6-cylinder engine

GENERAL INFORMATION

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

Defective sealing laying 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 previously shlangovy collars.
4. Disconnect a wire of weight of the battery (–).
Prevention

The anticreeping code of radio is thus erased. See instructions to subsection about battery removal.


5. Establish the first cylinder of the engine in ignition VMT. For this purpose transfer a transmission to idling and tighten the parking brake. Turn a cranked shaft before coincidence of markings by means of a wrench with SW27 nozzle for the central bolt of a belt pulley of a cranked shaft in the 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 the direction of the arrow "open" and take.
7. Uncover heads of the block of cylinders.
8. Remove a natyazhitel of a chain.
Prevention

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


9. Unscrew the retsirkulyatsionny pipeline of hot liquid (25) from a locking cover (28) if it is available.
10. Disconnect shtekkerny connections of the item sensor of a camshaft.
11. Unscrew tense roller of the shock-absorber from a forward cover, вытолкните down and turn. Track an adjacent washer, do not forget to establish it at the subsequent assembly.
12. Unscrew bolts (shooter) of a forward cover. Uncover with bolts (c).
13. Unscrew bolts (d) of a retsirkulyator of cooling liquid if they are available.
14. Mark the provision of gear wheels of a camshaft in relation to an operating chain by means of a felt-tip pen or paint.
15. Weaken bolts (3) by-pass wheels (1) if it is available.
Prevention

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


16. Remove details together with a support (2).
17. Extend fingers of directing tires a pusher or other suitable tool.
18. Unscrew an anchor of a regulator of a camshaft.
19. Dismantle a set of the wires going to the engine, namely, all connectors of wires weaken and remove together with shtekkerny connections.
20. Disconnect the mechanism темпомата if it is available.
21. Disconnect shtekkerny connection in a place of the socket (X26/17). Disconnect shtekkerny connection of an executive link of an electronic pedal of an accelerator (16/1х1) for what press a lock latch (shooter). Thus the tip turns by means of a spiral spring on 90 °. Take a set of wires of the engine from the cable channel.
22. Unscrew a forward exhaust pipe from a final collector.
23. Unscrew a hose of absorption of air (1) on a head of the block of cylinders.
24. Disconnect a hose from the return valve of absorption of air (shooter), 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) cases of a cranked shaft from the combined support (17).
27. For a while open a stopper of a fuel tank to reduce excessive pressure. Then unscrew топливопроводы (arrows).
28. Unscrew a hose of depression (2) from branch of an inlet pipe.
29. Disconnect a cable of management of a butterfly valve (30) from a butterfly valve branch pipe.
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 natural a nozzle, for example, HAZET 990SLg-12, bolts of a head of the block of cylinders as it should be, the return numberings in drawing, i.e. from 14 to 1. The cylinder 1 is aside engine ventilation.
32. Raise a head of the block of cylinders by means of the repair crane. For this purpose pass in eyes the 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 remains a suitable shaber. Track, that the remains of hermetic did not get to openings. Close openings a rag.
2. Check a steel ruler planeness of a head of the block of cylinders and the motor block in the longitudinal and cross-section direction, if necessary finish (work for repair shops).
3. Check a head of the block of cylinders on absence of scratches, and a working surface of cylinders – on absence рисок.
4. Carefully clear openings under bolts of a head of the block of cylinders of oil and other deposits.
5. Surely replace sealing laying of a head of the block of cylinders.
6. Impose new sealing laying without hermetic so that openings were not closed.
7. Before installation of a head of the block of cylinders check, whether there are camshafts in situation VMT. In this situation it is possible to establish pins (1) diameter of 4 mm directly from above the 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 situation VMT.
8. Establish a head of the block of cylinders.
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 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 of a prileganiye of 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 the 14th in three stages. At first wrap bolts a dinamometrichesky natural the moment of 55 N of m. At the second stage all bolts with 1 on 10 tighten on 90 ° a rozhkovy key. On the third – tighten further bolts with 1 on 10 for 90 ° a rozhkovy key.

Prevention

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

At a tightening of bolts for an assessment of an angle of rotation arrange the key handle 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 marking put at dismantling.
13. Take pins in diameter of 4 mm from flanges of camshafts.
14. Connect a hose of cooling liquid to the pump of cooling liquid and fix a shlangovy tape.
15. Attach a cable of management of a butterfly valve and adjust it.
16. Connect the mechanism темпомата if it is available.
17. 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 depression pipeline for the amplifier of braking on an inlet pipe. Put on a hose of ventilation of a case of a cranked shaft the combined support and fix a shlangovy 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 of absorption of air with a podsoyedinitelny 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 the electric tip for a 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 of 35 N of m 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 tires.
26. For sealing in the fat-free flute of a cover of the operating case at the left and on the right on a joint (shooter) 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 the fat-free flute a new sealant without hermetic. A forward cover in places of its prileganiye 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 (е). Tighten the bottom bolts at first with the moment of 20 N of m.
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, previously paste over with a tape elements of connection of a camshaft, remove a tape after installation of a sealing ring. Specialized 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 laying.
32. Screw a retsirkulyator of cooling liquid if it is available.
33. Attach electric tips to the item sensor and a regulator of camshafts.
34. Establish a natyazhitel of a chain.
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 spark plug tips to ignition coils.
38. Establish the air filter.
39. Screw on a collector an exhaust pipe.
40. Connect hoses of 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 on hours.
44. Set an anticreeping code of radio.
45. Warm up the engine to its working temperature and check tightness of all connections.