Power Recirculating Ball: Description

NOTE: For information and diagnostic procedures of the 735i, 735iL and 750iL Servotronic electronic steering control components, see appropriate ELECTRONIC - SERVOTRONIC article.

Power steering gear consists of a gear housing containing a sector shaft with sector gear and a power piston with gear teeth inside of piston which is in constant mesh with sector shaft teeth.

A worm shaft connects steering shaft to power piston through a universal joint coupling. The worm shaft is geared to the piston through recirculating ball contact. The steering valve is incorporated into upper end of worm gear assembly.

Power steering pump is a high pressure, belt driven, vane type pump. A fluid reservoir incorporating a filter element supplies hydraulic fluid to pump. Pump maintains hydraulic pressure to power steering gear assembly.