Steering Chassis Overview of Servotwin ® electrohydraulic power steering W46.00-1009-00 1 Power steering pump 2 Power steering fluid reservoir 3 Power steering fluid cooler 4 Servotwin ® steering gear 5 Working cylinder A73 Electrohydraulic power steering (APS) control unit A76 Redundant power supply (RPS) control unit A77 Steering angle sensor G3 Buffer battery 61 i Introduction of the New Truck Generation - The New Arocs (Model 964) – This printout will not be recorded by the update service. Status: 01 / 2013 –