S 500 Coupe (140.070) V8-5.0L (119.980) (1997)
Power Steering Bleeding: Service and Repair
Filling and Bleeding Power Steering Tandem Pump
To determine power steering pump application, See: Power Steering Pump/Application and ID
Capacities:
Model 124, 129, 201, 202
approx. 1.0 liter
Model 140
approx. 1.4 liter
1. Version (model 201 up to 09/84) When engine is cold (room temperature approx. 20°C) oil level 6-8 mm below marking (arrow). When oil is at
operating temperature (approx. 80°C) correct oil level up to the embossed or cast-in marking (arrow).
2. Version 10/84 to 01/91 The reservoir is filled correctly when the oil (20-50°C) is between the min. and max. markings, 28-36 mm below the edge
of the reservoir.
3. Version as of 02/91 When engine is cold (room temperature 20°C) oil level at the maximum marking of the oil level display (30°c) of the power
steering/tandem pump (30).
4. Filling/Bleeding
Before starting the engine, fill with specified steering gear oil to approx. 10 mm below the upper edge of the reservoir.
Start engine. allow to run for approx. 1 s. Switch off engine and immediately replenish extracted oil. The power steering pump must NOT ingest
any air. Turn steering several times anticlockwise and clockwise towards full lock so that the system can bleed itself. On vehicles with tandem
pump (level control, ADS, ASD or 4MATIC) bleed the respective systems separately.