Mercedes S-Class W-140

1991-1999 of release

Repair and car operation



Mercedes S-Class
+ Mercedes-Benz Cars of a class S (W-140)
+ Operation manual
+ Routine maintenance
+ Engine
+ Systems of cooling, heating
+ Power supply system and release
+ engine Electric equipment
+ gear shifting Box
+ Avtomaticheckaya transmission
+ Coupling
+ Brake system
- Suspension bracket and steering
   Security measures
   Corners of installation of wheels of the car, road clearance
   + Forward suspension bracket
   - Back suspension bracket
      Stupichny assembly - installation details
      Removal and installation of a screw spring
      The stabilizer of cross-section stability - installation details
      Removal and shock-absorber installation
      Removal and installation of a back amortization 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 a road clearance of a back suspension bracket»)
      Removal and control unit installation by a road clearance of a back suspension bracket
      Dempfernye valves - installation details
      Removal and installation of the valve of adjustment of a road clearance
      Regulator of a road clearance of a back suspension bracket
   + Steering
+ Body
+ Onboard electric equipment



56822268



Check of the hydraulic pump

Preparation

Check of the hydraulic pump

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


 PERFORMANCE ORDER

1. Disconnect the returnable pipeline (T) from the tank (2).
2. Attach by one end of the returnable pipeline a returnable tube, and other end place in the measured tank.
3. Start the engine and establish idling turns.
4. Check pump giving. Giving of the pump of 0.2 l/minutes.
5. Muffle 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. Establish the lever (3а) the control unit in the situation "filling" - F.
5. Check forcing pressure of the pump. As pressure considerable, carry out the test quickly. The valve of the control unit limits to Perepuskna forcing pressure of the pump. Perepuskna the valve when opening publishes whistle. If pressure of opening of the perepuskny valve is lower demanded, replace the pump. If pressure of opening of the perepuskny valve is higher - check the back control unit a suspension bracket. Pressure of opening of the perepuskny valve 120-153 bar.