Mercedes S-Class W-140

1991-1999 of release

Repair and operation of the car


Mercedes S-Class
+ Mercedes-Benz cars of the class S (W-140)
+ Operation manual
+ Routine maintenance
+ Engine
+ Cooling systems, heating
+ Power supply system and release
+ Engine electric equipment
+ Gear shifting box
+ Automatic transmission
+ Coupling
+ Brake system
- Suspension bracket and steering
   Security measures
   Angles of installation of wheels of the car, clearance
   + Forward suspension bracket
   - Back suspension bracket
      Stupichny assembly - installation details
      Removal and installation of a screw spring
      The stabilizer of cross stability - an installation detail
      Removal and installation of the shock-absorber
      Removal and installation of a back depreciation rack (model with hydraulic adjustment of a suspension bracket)
      Check of the hydraulic pump
      Removal and installation of the accumulator of pressure of a hydraulic actuator of a back suspension bracket (model with a code 217a "A self-regulating back suspension bracket with ADS" and a code 480 "Management of clearance of a back suspension bracket")
      Removal and installation of the control unit of clearance of a back suspension bracket
      Damping valves - installation details
      Removal and installation of the valve of adjustment of clearance
      Regulator of clearance of a back suspension bracket
   + Steering
+ Body
+ Onboard electric equipment






Check of the hydraulic pump

Preparation

Check of the hydraulic pump

3 — the Control unit of a pneumosuspension bracket
3r — the Drain stopper on the control unit
S2 — Test installation


 PERFORMANCE ORDER

1. Disconnect the returnable pipeline (T) from the tank (2).
2. Attach a returnable tube to one end of the returnable pipeline, and place other end in the measured tank.
3. Start the engine and establish idling turns.
4. Check giving of the pump. Giving of the pump of 0.2 l/min.
5. Kill the engine.
6. Attach the returnable pipeline (T) to the tank (2).
7. Merge liquid from system.

Check

 PERFORMANCE ORDER

1. Attach a tester to the control unit (3).
2. Fill the tank (2) with liquid.
3. Start the engine and establish idling turns.
4. Install the lever (3a) of the control unit in situation "filling" - F.
5. Check the forcing pump pressure. As pressure considerable, you carry out the test quickly. The valve of the control unit limits to Perepuskna the forcing pump pressure. Perepuskna the valve when opening publishes whistle. If pressure of opening of the perepuskny valve is lower than demanded, replace the pump. If pressure of opening of the perepuskny valve is higher - check the back control unit of a suspension bracket. Pressure of opening of the perepuskny valve of 120-153 bars.