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Home >> BMW >> 1994 >> 740iL >> Repair and Diagnosis (Single Page) >> Suspension >> Electronic Suspension >> Level Control Systems - Overview - 5-Series, 7-Series >> Level Control Systems >> System Components >> Tandem Pump

Tandem Pump

The tandem pump consists of a vane pump for power steering and a radial pump for self-leveling suspension. Both pumps are driven by the same shaft and have separate oil feeds for each system.

The radial pump has the capacity to pump 102 liters of oil per minute. The maximum pressure is limited to 1900 Psi (130bar) by the pressure regulator located on the control valve.

Fig 1: Identifying Tandem Pump
G03403619Courtesy of BMW OF NORTH AMERICA, INC.