13 71... Removing bottom sound insulation (N47 D16/20 K/U/O/T 1)

Necessary preliminary tasks: 

• Lower front axle support  . See 31 11 506 LOWERING/RAISING FRONT AXLE SUPPORT (UNIVERSAL LIFTER) or 31 11 506 LOWERING/RAISING FRONT AXLE SUPPORT (UNIVERSAL LIFTER) .

Release screws (1).

Remove holder (2).

Fig 1: Identifying Bottom Sound Insulation Holder And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Feed out and remove sound insulation (2).

Fig 2: Identifying Sound Insulation And Screws

Courtesy of BMW OF NORTH AMERICA, INC.