Hydraulic Fluid Expansion Tank

Fig 1: View Of Hydraulic Fluid Expansion Tank Mounting

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 2: View Of Hydraulic Fluid Expansion Tank Quick Release Coupling

Courtesy of BMW OF NORTH AMERICA, INC.

The Hydraulic Fluid Expansion Tank is mounted on the rear of the intake manifold and connected to the hydraulic unit via a plastic supply hose with a quick release coupling. A valve in the tank prevents oil loss when the supply hose is disconnected.