Steering

Steering
Conventional rack and pinion power steering is used in the (E83) X3 SAV and Servotronic is available as an option. The design and functioning principle of the Servotronic option are nothing new but have been modified as described in this chapter.
The servotronic steering system controls the amount of power assistance based on the current road speed. The hydraulic pressure is electronically adapted to the current road speed, with greater power assistance available at lower road speeds and less power assistance available at greater road speeds.





Mechanical/Hydraulic Components
The (E83) X3 SAV is equipped with hydraulic assisted rack and pinion steering. The total ratio of the steering is: 18.9: 1. The total rack stroke is 81.0 mm (1.7 turns of the steering wheel). The hydraulic ports on the steering gear have quick release couplings. The hydraulic pump maximum pressure is limited to 127 bar.
E83 vehicles are equipped with W shaped cooling loops (hoses) to assist in cooling.

CAUTION: The hydraulic pump does not have a pump end shutdown feature. The hydraulic pump could be damaged after approximately 1 minute if the steering is kept on full lock (end stop) for a long period.