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
   + 3.1.10. 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
      3.2.7.2. The engine in volume of 2,2/2,5 l
   + 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







3.2.7.2. The engine in volume of 2,2/2,5 l
THE GENERAL DATA

Camshafts are located in separate картере in a head of the block of cylinders. Bearings of inlet and final camshafts being opposite each other have the general cover which covers both camshafts. Thus, both camshafts always understand together.

Removal

Bolts of camshafts


 

PERFORMANCE ORDER
1. Uncover heads of the block of cylinders.
2. Establish the piston of the first cylinder in ВМТ ignitions. For this purpose translate a transmission on idling and turn a cranked shaft clockwise by means of an asterisk attached by the central bolt of a belt pulley to a cranked shaft. Turn a cranked shaft until the label "FROM" on a belt pulley will not be under the index (marksman).

The prevention

Do not rotate the engine in the opposite direction. At all do not turn a shaft for a bolt of fastening of a distributive gear wheel.


3. In this position it is necessary to insert fixing pin or other suitable core in diameter of 6,75 mm into an aperture of a gear wheel of an inlet camshaft (2) through a cover of the first bearing of camshafts or turn a cranked shaft on a complete revolution and insert a core.
4. Designate rather each other position of a distributive gear wheel and an operating chain by means of a varnish or штихеля, preliminary having wiped a rag this place on a chain gear wheel.
5. Remove натяжитель chains.
6. Unscrew bolts of fastening and remove a gear wheel of a final camshaft. The key is necessary for unscrewing of bolts with a face nozzle in the size Т40.
The prevention

The management chain should remain in gearing with gear wheels of a cranked shaft and the fuel pump. Phases газораспределения otherwise will change that can lead to malfunctions in the engine.


7. Will put an operating chain aside and attach a wire to a head of the block of cylinders.
8. Number in the order of a cover of bearings of camshafts that at the subsequent installation to establish them on a former place.
9. The engine in volume of 2,5 l: unscrew covers of bearings of camshafts.
The prevention

Camshafts very fragile. Not to damage them, strictly observe a dismantling order: at first unscrew all bolts of bearings 1, 3, 4 and 6 (arrows). Then alternately turn off bolts of both covers of bearings 2 and 5 (accordingly on 1/2 turns), counteraction (fig. Bolts of camshafts see) will not disappear yet.


10. The engine in volume of 2,2 l: at first unscrew covers of bearings 1, 3 and 5. Then stage by stage weaken bolts of covers of bearings 2 and 4 (accordingly on 1/2 turns), counteraction will not disappear yet.
11. If it is necessary, take тарельчатые pushers and examine on external damages (presence of scratches), if necessary, replace. For вытягивания a pusher in a workshop the siphon-pusher which in house conditions can be made of a sucker of a wall hook is used.

Installation
The prevention

At camshaft replacement use a shaft with the same index. The index is beaten out near to the average bearing.


PERFORMANCE ORDER
1. Carefully clear camshafts and covers of bearings промывочным gasoline and grease with engine oil. If pushers were dismantled, oil them and establish in a head of the block of cylinders in the same position, as before dismantling.
2. Check washers for axial fixing of a camshaft in flutes of the average bearing, in case of need replace.
3. Grease camshafts with engine oil and insert into a head of the block of cylinders, thus both apertures (3) (d = 1,5 mm) should be in distributive gear wheels opposite each other. In such position it is possible to establish and a core.
4. Establish covers of bearings of camshafts according to their numbering and in regular intervals, in an order, the return to dismantle, tighten with the moment 15 Н.м.
5. Insert into a flange of an inlet camshaft a core.
6. Establish a chain wheel of camshafts with the chain imposed on it on a final camshaft and twirl a new bolt with the moment 20 Н.м. The labels put on the operating chain and a chain wheel, should coincide.
The prevention

Remove a core from a chain wheel.


7. Establish натяжитель chains with a new sealing ring.
8. Establish a cover of a head of the block of cylinders and complete the engine.