S-class W202 Mercedes

1993-2000 of release

Repair and car operation



W202 Mercedes
+ 1.2. General information
+ 2. Maintenance
+ 3. Engines
- 4. Greasing system
   4.2. Specification of engine oil
   4.3. Scope viscosity oils / class
   4.4. Consumption of oil
   4.5. Contour of circulation of oil (DD)
   4.6. Oil reduktsionny valve
   + 4.7. Oil pallet
   4.8. Indicator of level of oil
   4.9. The heat exchanger oil - / cooling liquid
   4.10. Diagnostics of malfunctions in a contour of circulation of oil
+ 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


4.6. Oil reduktsionny valve

GENERAL INFORMATION

PETROL ENGINE

6-cylinder petrol engine


1. Oil pump. Soaks up engine oil via soaking-up filter and soaking-up pipe from the oil pallet
2. The longitudinal oil channel to the oil filter
5. Main oil channel
To basic sites
6. Oil jets. Engine oil is injected from below for cooling in the direction to the bases of pistons
7. The delivery pipeline to a natyazhitel of a chain
8. Return blocking valve
9. Natyazhitel of a chain
10. An opening for an exit of gases in sealing laying of a head of the block of cylinders
14. An oil jet for an operating chain
15. The delivery pipeline to a head of the block of cylinders
17. Oil throttle. Internal diameter of 4 mm
22. Oil channel. For greasing of 12 tarelchaty pushers on the release party
23. Oil channel. For greasing of 12 tarelchaty pushers on the admission party
27. Camshaft regulator
30. Hydraulic tarelchaty pusher
and. The oil channel from the oil pump to an oil radiator
b. The oil channel from the oil filter to basic surfaces
page. A drain opening in the oil pallet

The oil reduktsionny valve is in the channel between the chamber of absorption and the chamber of compression of the oil pump. If pressure of oil from above the 5th bar, the valve opens, and the part of oil can back join the chamber of absorption of the pump.

If at normal level of oil its pressure too little, check the valve.

Removal
1. Vinitovy stopper, SW22
2. Compression spring
3. A directing finger
4. Piston

PERFORMANCE ORDER
1. Disassemble the oil pallet.
2. Unscrew a screw stopper SW22 wrench.
Prevention

The screw stopper is under the pressure of a spring of compression and can easily jump out.


3. Take the compression spring, directing finger and the piston.
Prevention

The Tugopodvizhny or jammed piston can be taken by means of ring pincers.


4. Clean an opening in the oil pump and blow the compressed air.
5. The piston of an opening of the oil pump several times move backwards-forward. If the piston moves hardly, slightly level it a polishing cloth.

Installation

PERFORMANCE ORDER
1. If replace the piston, check ease of its course in an opening. If necessary, remove agnails in the piston with a nazhdachny cloth.
2. Establish the piston with a directing finger and a new spring of compression.
3. Screw up a screw stopper without a sealing ring and tighten with the moment of 50 N of m.

DIESEL ENGINE

The oil reduktsionny valve is in the connecting channel between chambers of compression and absorption of the oil pump. If pressure exceeds the 5th bar, the valve opens, and the part of oil is poured in soaking-up chamber. The valve should be checked, if at normal level of oil its pressure too low.

Removal


249. Vinitovy stopper, 50 N of m.
250. A directing finger
251. Compression spring
252. Piston

PERFORMANCE ORDER
1. Remove the oil pallet.
2. Unscrew a screw stopper.
Prevention

The screw stopper is under the pressure of a spring of compression and can easily jump out.


3. Take the compression spring, directing finger and the piston.
Prevention

The Tugopodvizhny or jammed piston take out by means of an external ring grip.


4. Clean the cylinder of the oil pump and blow the compressed air.
5. Several times move backwards-forward the piston in the cylinder of the oil pump. If the piston hard moves in the cylinder, slightly polish the piston on fabric притире.

Installation

PERFORMANCE ORDER
1. If the piston is replaced new, check the new piston on ease of a course in the cylinder. In case of need remove agnails on the piston with a nazhdachny cloth.
2. Establish the piston with a directing finger and a new spring of compression.
3. Twist a stopper without a sealing ring and tighten with the moment of 50 N of m. The screw stopper is condensed with konusny landing.