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
   + 3.1.10. 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


3.2.6. Natyazhitel of a chain

GENERAL INFORMATION

Chains arising at work noise can be caused by shortcomings of functioning of the tension device. Disassemble and check it. If necessary replace the tension device in a set.

Chains (244) will screw Natyazhitel on the right side in a head of the block of cylinders. Through an opening in a head of the block of cylinders in a natyazhitel of a chain engine oil moves under pressure.


The chain stretches under action of force of a spring of compression (230) and pressure of oil in a natyazhitel. Pressure of a clip of a finger (233) on the tire of management (215) is supported to constants by means of the return valve (227/228) and the valve of restriction of pressure (227/231), i.e. does not depend on pressure of oil in the engine.

Removal
PERFORMANCE ORDER
Unscrew a natyazhitel of a chain for a six-sided head (235) of a head of the block of cylinders.

Control

PERFORMANCE ORDER
1. Place a natyazhitel of a chain with a press finger in SAE 10 engine oil. Level of oil should be slightly above a side of a six-sided head of a natyazhitel. Press 7–10 times on press a finger a press.
2. After filling with oil the natyazhitel should be compressed slowly, evenly and with big power effort. Otherwise replace it.

Installation


Prevention

Mount a natyazhitel of a chain only in the condition filled with oil.


PERFORMANCE ORDER
Establish a natyazhitel of a chain with use of new sealing laying and tighten fastening bolts with the moment of 80 N of m. Thus press the finger should adjoin to a ledge of a sled of a tension.