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











3.2.12. Valves
THE GENERAL DATA

The engine in volume of 2,0 l

 

The prevention

If details of management are used by the valve again, they need to be established on former places. To avoid mess of details, make the panel for their storage.


Removal

PERFORMANCE ORDER
1. Remove a head of the block of cylinders and put on wooden laths so that valves were supported from below.
2. Remove маслоотражательные caps.
3. Cast away aside a head of the block of cylinders and take valves from the directing.
4. Clean valves.
5. With the burnt through plates, with too small height (h) the valve plates, the worn out or scratched cores it is necessary to replace valves. Limiting value (h) see in the table the Sizes of valves.
6. The repair shop can check up a valve core on palpation and make completion of a corner of a basic surface of the valve. The maximum palpation of a core of the valve and a valve saddle: 0,03 mm.

The prevention

At any operations on processing of valves it is necessary to mean that the corner of a plate of the valve makes and = 45 + 15 .

Instructions: the core and a rod of the valve for engines in volume of 2,2/2,5 l have 3 ring bores.

Installation


PERFORMANCE ORDER
1. Before valve installation check up directing the valve and, if necessary, finish a valve saddle.
2. Smooth out a valve core in a place прилегания rod details.
3. Slightly grease a core of the valve and directing the valve with engine oil and establish the valve.
4. Establish new маслоотражательные caps.
5. Establish a valve spring.
6. Establish all other valves, do not mix inlet and final valves.
7. Establish тарельчатый a pusher.
8. Establish a head of the block of cylinders.

The sizes of valves
THE INLET VALVE (195)
THE FINAL VALVE (196)
Engines in volume of 2,0 l
D = 37,9 – 38,1 mm
D = 34,9 – 35,1 mm
D1 = 7,97 – 7,955 mm
D1 = 8,960 – 8,945 mm
L = 106,4 mm
L = 106,4 mm
h (new) = 1,75 – 2,05 mm
h (new) = 1,75 – 2,05 mm
h (предельн.) = 1,6 mm
h (предельн.) = 1,6 mm
Engines in volume 2,2 / 2,5 l
D = 29 mm
D = 26 mm
D1 = 6 mm
D1 = 6 mm