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Tandem pump

The tandem pump supplies the oil circuit of the Dynamic Drive as well as the power steering. The pump consists of a radial piston for the Dynamic Drive system and a vane pump for the power steering. Dynamic Drive and the power steering share a common oil cooler and oil reservoir.

Fig 1: Identifying Radial Piston Section Of Tandem Pump

Courtesy of BMW OF NORTH AMERICA, INC.

Index	Explanation
1	Radial piston section of the tandem pump
2	Vane cell section of the tandem pump