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
   + 3.2.8. 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











3.1.12. Maslootrazhatelnye caps
THE GENERAL DATA

Worn out маслоотражательные caps can cause the raised expense of oil. Caps can be removed and at the established head of the block of cylinders. However, compressed air and a lever pusher with the basic device, for example, Mercedes-11 589 015900, 11 589 186 186 100 and 11 589 256 300 is thus necessary. If the special tool is not present, it is necessary to remove a head of the block of cylinders.

Replacement маслоотражательных caps for the 4-cylinder engine is more low described, and for 6-cylinder – operate on sense, using the corresponding tool.

Removal


The prevention

If details of management are used by the valve again, they should be mounted on the same places. Not to mix a detail, make the special panel for their storage.


PERFORMANCE ORDER
1. Remove camshafts.
2. Remove spark plugs.
3. Remove a sheeting of wires of the engine on a forward wall of a body.
4. Fasten a basic crosspiece (2) with a mobile detail (7) to bearings 1 and 5 camshafts or later to bearings 6 and 10 with the moment 20 Н.м.
5. Turn in ВМТ the piston of the corresponding cylinder a wrench with a nozzle. The 4-cylinder engine: at position ВМТ of a belt pulley pistons 1 and 4 stand in ВМТ. At coincidence of a 180-degree mark of a belt pulley to a base mark in ВМТ there are pistons of cylinders 1 and 6. The 6-cylinder engine: at position ВМТ of a belt pulley in ВМТ there are also pistons of cylinders 1 and 6. At coincidence of a 120-degree mark of a belt pulley – pistons of cylinders 2 and 5; at a 240-degree mark – pistons of cylinders 3 and 4.
The prevention

At turn of a cranked shaft highly raise an operating chain that it was not jammed.


6. Hang a lever pusher.
7. Extend тарельчатый a pusher (3) rubber sucker (diameter of 30 mm), for example, HAZET 735-2.

The prevention

Do not use for this purpose a magnetic siphon as the sliding surface тарельчатого a pusher is magnetised, and subsequently on it the smallest metal shaving that leads to damage of a pusher and cams is postponed.


8. Fix a cranked shaft. For this purpose establish the first transfer and tighten a lay brake.
9. Establish in the chamber of combustion of the cylinder superfluous pressure a minimum 6 bar. For this purpose screw in подсоединительный a hose (4) devices for check of tightness of the cylinder in a spark plug aperture. If there is no control device of tightness, it is possible to make a corresponding hose by means of an old spark plug.
10. Bite off an electrode of "weight" of an old spark plug (1). Break off a ceramic insulator (2) by means of a screw-driver, and also break off, shaking backwards-forward, an average electrode (3) and take. Push out a punch (about 3 mm) the rests of an average electrode with стекломассой (4) and a connecting finger (5). Thus clamp a spark plug in a vice or use corresponding винтонарезной the machine tool.

The prevention

Do not damage a spark plug carving not to spoil an aperture carving in a head of the block of cylinders.


11. Screw in a spark plug in the corresponding cylinder, connect to a delivery air hose and establish in the cylinder superfluous pressure a minimum 6 bar.
12. Establish a lever pusher (9) with a detail of pressure (5) on a plate of a spring of the valve. Arrange a detail of pressure and a mobile detail in parallel each other. A mobile detail fix a bolt (8).
13. Compress a valve spring.
The prevention

Do not compress a spring of the valve without compressed air, damage of valves and pistons differently is possible.


14. Details of a rod of the valve (14) remove from a core of the valve tweezers (6) or a magnetic siphon.
15. Take a plate of a spring of the valve (15) and a spring of the valve (17).
16. Remove маслоотражательный a cap (86) from a valve core special pincers, for example, HAZET 791-6.

The prevention

Do not damage a core and directing the valve.


17. Take a plate of a spring of the valve (15) and a spring of the valve (17).
18. If it is necessary, remove agnails from a flute of a core of the valve мелкодисперсным наждачным a cloth.
19. Check up deterioration of the directing valve in area прилегания them to маслоотражательным to caps. Replace directing the valve (work for repair shops).

Installation

PERFORMANCE ORDER
1. Pognutye details of a rod, valves and a spring plate replace.
2. Directing the valve which are rejected from a holding flute for маслоотражательных caps, should be replaced (work for a workshop).
3. Put on a protective sleeve (2) a valve core.
4. Oil маслоотражательный a cap (86) and spread manually by means of assembly оправки.
The prevention

Assembly оправка is a part of the repair complete set. At a nozzle without assembly оправки the sealing facet маслоотражательного a cap is damaged.


5. Establish and fix springs of the valve and a plate of springs of the valve.
6. Insert details of a rod of the valve, unclench valve springs.
7. Establish тарельчатый a pusher.
8. Replace маслоотражательный a cap.
9. Unscrew spark plugs.
10. Establish camshafts.
11. Fix a covering of the complete set of electroconducting of the engine on a forward wall of a body.