LAD Module

The load dependent module is a control valve that regulates the flow of oil between the strut and the pressure reservoir.

The control piston in the (LAD) moves in relation to the pressure applied from the pump. This movement will regulate the tension on the inner spring of the module. With only a low pressure applied, a small amount of tension will be applied to the spring. Little flow resistance will be developed between the strut and pressure reservoir. The damping force is soft.

Fig 1: Identifying LAD Module Operation (1 Of 3)

Courtesy of BMW OF NORTH AMERICA, INC.

With a high pressure applied to the control piston, the flow resistance is high and the damping force will be stiff.

Fig 2: Identifying LAD Module Operation (2 Of 3)

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 3: Identifying LAD Module Operation (3 Of 3)

Courtesy of BMW OF NORTH AMERICA, INC.